The degeneracy of the genetic code is the nontraditional base pairing of the anticodon with the third base of the codon mechanism.
In trаnslаtion, the redundаncy of the genetic code cаn be explаined in pаrt by the wobble hypothesis. This hypothesis stаtes thаt the first two nucleotides on the mRNА codon require trаditionаl (Wаtson-Crick) bаse pаiring with their complementаry nucleotides on the tRNА аnticodon, but third nucleotide on the codon mаy undergo less stringent ("wobble") bаse pаiring in а non-Wаtson-Crick mаnner. Codon degenerаcy is explаined by nontrаditionаl bаse pаiring аt the third position of the codon аnd аnticodon.
The genetic code is considered "degenerаte" becаuse more thаn 1 codon cаn code for the sаme аmino аcid. This occurs becаuse the third position of the mRNА codon аnd the tRNА аnticodon cаn undergo nontrаditionаl bаse pаiring, аllowing а single tRNА molecule to bind to different codon.
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Annelids
Characteristics
Annelids are the most advanced type of worms are known as
segmented worms. The segmented structure of annelids help them
move and survive predators. They can live in saltwater, freshwater,
and damp soil. Most of them are scavengers and burrow into soil or
sand.
What is a common feature of
ALL of Phylum Annelida?
A have a closed-circulatory system
B. scavenge for food
C. have a segmented body plan
D. contain anti-coagulant factors
A common feature of all Phylum Annelida is : C.) have a segmented body plan.
What features do annelids possess?The term "annelida" also refers to segmented worms. It is distinguished by having a segmented body plan, which is a characteristic shared by all individuals in this phylum. Because of their more complicated and flexible bodies due to this segmentation, they can move around and fend off predators.
Some of them may survive in a variety of habitats, including freshwater, saltwater, and moist soil. However, the majority of them are scavengers that burrow into the ground or sand. Other traits, including having a closed circulatory system or anti-coagulant substances, can differ between species.
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In fMRI, the magnetic signal being recorded changes when brain activity
changes, but the change in the magnetic signal:
A.Is delayed by about 6 milliseconds because this is how long it takes for
blood flow to change after the brain activity changes
B.Is delayed by about 6 seconds because this is how long it takes for
blood flow to change after the brain activity changes
C.Is delayed by about 6 milliseconds because this is how long it takes for
the magnetic signal to travel from the brain to the scanner
D.Is delayed by about 6 seconds because this is how long it takes for the
magnetic signal to travel from the brain to the scanner
Because blood flow changes when brain activity changes, which takes around 6 seconds, the magnetic signal being captured in fMRI changes when brain activity is delayed by this amount of time.
The approach of using functional magnetic resonance imaging (fMRI) to identify dynamic patterns of activity in the functioning human brain. Although fMRI is just a few decades old, the early findings that lead to it have completely changed the way that brain activity is studied. The magnetic characteristics of deoxyhemoglobin, as well as the physiological fact that blood flow rises more than oxygen consumption when local cerebral activity increases, provide a biophysical basis for the capacity to detect changes in brain activity. When cerebral activity rises, these processes lead to a slight increase in the local magnetic resonance signal, the blood oxygenation level dependent (BOLD) effect. This pattern of activation may be assessed using current methods with spatial and temporal resolutions of up to 1 mm3 and 1 s, respectively.
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which of these examples illustrates deductive reasoning? which of these examples illustrates deductive reasoning? you learned in elementary school that as temperature drops, liquids change into solid form. you are given an unfamiliar liquid and predict that it will become solid if you put it in the freezer. you come down with the flu after you pretended to be sick so you could skip work to attend a concert. now you decide that fate always punishes you for bad behavior. you and your roommate both drank two cups of coffee before an exam, and both of you got a better than average mark on the exam. you hypothesize that coffee drinking improves academic performance.
You learned in elementary school that as temperature drops, liquids change into solid form. you are given an unfamiliar liquid and predict that it will become solid if you put it in the freezer.
This is deductive reasoning. You are predicting specific results based on general principles.
Deductive reasoning is employed throughout the scientific method to arrive at an accurate and logical conclusion. Inductive reasoning is yet another method that is frequently employed. People frequently mix up deductive with inductive thinking, yet there are significant differences between the two methods for reaching a logical conclusion.
Following are some illustrations of logical reasoning:
Majority of mammals possess backbones.
Minority animals include humans.
In summary, people have backbones.
Majority bird species lay eggs.
Minor birds include pigeons.
Consequently, pigeons produce eggs.
Major photosynthesis is carried out by all plants.
Minor: A cactus is a type of plant.
A cactus produces food through photosynthesis.
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a researcher designs an experiment to investigate whether soil bacteria trigger the synthesis of defense enzymes in plant roots. the design of the experiment is presented in table 1. for each group in the experiment, the researcher will determine the average rate of change in the amount of defense enzymes in the roots of the seedlings. table 1. an experiment to investigate the effect of soil bacteria on plant defenses group number of seedlings type of soil treatment solution 1 10 sterile potting soil contains actively reproducing soil bacteria 2 10 sterile potting soil contains heat-killed soil bacteria 3 10 sterile potting soil contains no soil bacteria which of the following statements best helps justify the inclusion of group 2 as one of the controls in the experiment?
Group 2 in the experiment, where sterile potting soil contains heat-killed soil bacteria, serves as a control group. This group is included in the experiment to help the researcher.
The presence of live soil bacteria or to other factors such as the physical presence of the bacteria in the soil. The heat-killed bacteria in group 2 will not be able to reproduce and trigger the synthesis of defense enzymes in the plant roots, this will allow the experiment to distinguish between a direct effect of the live bacteria on the plant roots and an indirect effect due to the presence of the bacteria in the soil. In this way, group 2 serves as a control group, which allows the researcher to establish a baseline against experiment which the effects of the other groups can be compared and to confirm that the observed effects are indeed due to the presence of live soil bacteria.
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which of the following is not a role played by nadh in cellular respiration?multiple choiceit accepts electrons and hydrogen ions.it is involved in redox reactions.it powers proton pumps.it oxidizes pyruvate.it transfers electrons.
NADH does not play a role in cellular respiration by oxidizing pyruvate.
NADH participates in oxidation in cell processes such as glycolysis to aid in the oxidation of glucose. The energy stored in this reduced coenzyme NADH is supplied by the TCA cycle during aerobic cellular respiration and powers the electron transport process in mitochondrial membranes.
In the presence of oxygen, pyruvate is converted into an acetyl group that is attached to a coenzyme A carrier molecule. The resulting acetyl CoA can enter a variety of pathways, but the acetyl group is usually delivered to the citric acid cycle for further catabolism.
Three carbons are converted from pyruvate to acetyl CoA, a two-carbon molecule attached to coenzyme A. This reaction requires a molecule of coenzyme A, which releases a molecule of carbon dioxide and reduces a NAD+ to NADH.
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What happens to gland cells during anaphase?
Chromosomes break at centromeres, and sister chromatids move to opposite ends of cell.
Anaphase is a division of the eukaryotic cell that involves separating the chromosomes to opposite poles of the cell.
The DNA variations intended for different cells, ensuring variability in population genetics when homologous pairs are separated during anaphase.
The third phase of meiosis is called anaphase I. It involves the movement of chromosomes from one meiotic cell to another through a microtubule apparatus known as the spindle network.
During anaphase, the chromosomes are transferred from one side of the cell to other. This process is known as a breakdown of microtubule network. It causes the fibbers of microtubules to shorten.
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part a - identifying the stages of mitosis the stages of mitosis were originally defined by cellular features observable through a light microscope. the six micrographs below show animal cells (lung cells from a newt) during the five stages of mitosis, plus cytokinesis. (note that interphase is not represented in these micrographs.) in these images, the chromosomes have been stained blue, microtubules green, and microfilaments red. drag each micrograph to the target that indicates the stage of mitosis or cytokinesis it shows.
Prophase is the last image, followed by prometaphase (image five), metaphase (image three), anaphase (image two), telophase (image four), and cytokinesis(mitosis) (image six).
The cell cycle is indeed a four-stage procedure in which the cell enlarges (gap 1, or G1), copies its DNA (synthesis, or S), gets ready to divide (gap 2, or G2), and splits (gap 4, or S) (mitosis, or M, stage).
The mitotic phases are: The chromosomes shorten & thicken during prophase. Chromosomes align in the centre of the cell during metaphase. Chromatids split off at the centromere & migrate to opposite poles during anaphase. Telophase: Following the reorganisation of nuclear envelopes around each cluster of chromosomes, two nuclei are formed. The phases of a M phase should be performed in the following order: Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis.
(The stages of mitosis were originally defined by cellular features observable through a light microscope. The six micrographs below show animal cells (lung cells from a newt) during the five stages of mitosis, plus cytokinesis. (Note that interphase is not represented in these micrographs.) In these images, the chromosomes have been stained blue, microtubules green, and microfilaments red.)
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Choose the accurate statement(s) about how communication by the nervous and endocrine systems differ. Check all that apply.
- the nervous system releases neurotransmitters at synapses at specific target cells.
- the endocrine system reacts more slowly to stimuli, often taking seconds to days.
- the endocrine system communicates by means of hormones.
The nervous system releases neurotransmitters at synapses at specific target cells, the endocrine system reacts more slowly to stimuli, often taking seconds to days and the endocrine system communicates by means of hormones.
The endocrine and nervous systems work together to control communication signals are passed from one cell to another by chemical communication.This means that chemicals cause an electrical impulse from one cell to another.
The endocrine systems both interact with the hypothalamus, which controls communication between the two via chemical messengers and both are essential to the human body because it work constantly to keep it functioning and responding to stimuli effectively.
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when resources are not owned by anyone and can be used by almost anyone, then environmental degradation can occur through
Environmental degradation is caused by the dynamic interaction of socioeconomic, institutional, and technological activities.
Many factors can influence environmental change, including economic growth, population growth, urbanization, agricultural intensification, rising energy consumption, and transportation.
The five most common types of environmental degradation are deforestation, rising sea levels, desertification and drought, land degradation, and finally, water and air degradation.
Environmental degradation is the deterioration of environmental quality caused by ambient pollutant concentrations as well as other activities and processes such as improper land use and natural disasters.
Environmental degradation is the degradation of the environment caused by the depletion of resources such as air, water, and soil, as well as the destruction of ecosystems and the extinction of wildlife. It is defined as any change or disturbance to the environment that is perceived to be harmful or undesirable.
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Choose the correct statement(s) on how cells regulate their sensitivity to circulating hormones. Check all that supply. Receptor-hormone interactions are similar to the enzyme-substrate interactions. Receptors chemical change their ligands. A receptor for onehormone will not bind other hormones When all the receptor molecules are occupied by hormone molecules, adding more hormone cannot produce any greater effect. Receptors do not exhibit enzyme-like specificity and saturation.
Receptor-hormone interactions are similar to the enzyme-substrate interactions.
Through endocrine signaling, a cell can communicate with another cell that is far away. When a cell releases a signaling molecule, it travels through the bloodstream to a distant target cell elsewhere in the body where it binds to receptors.
Cell sensitivity might grow or decrease depending on the quantity of hormone receptors present. Up-regulation, a reaction to growing hormone levels that makes the cell more responsive to the hormone and permits increased cellular activity, can cause the number of receptors to rise.
By transmitting and receiving signals, cells can communicate. In addition to coming from other cells, signals might also arrive from the outside world. These signals need to cross the cell membrane in order to cause a reaction. The signal itself may occasionally cross the membrane.
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The condition of the atmosphere at a specific time and place is called _______
A ocean currents
b climate
C air currents
D weather
Need help ASAP
The condition of the atmosphere at a "given place and time" is called Weather.
Answer: Option D
Explanation:
Weather is characterized as the different environmental conditions which incorporate precipitation, temperature, wind, mugginess and other meteorological components, and so on in a district over a significant lot.
Weather of earth can be dictated by environment or elevation of an area. It can be influenced because of different elements which incorporate human exercises like consuming non-renewable energy source, cutting down timberland, neighborhood land highlights like mountains etc.
Which of the following characteristics of a red blood cell increases its ability to carry oxygen to the tissues?
1) Lacking mitochondria, RBCs rely exclusively on anaerobic fermentation to produce ATP.
2) The cytoplasm of an RBC consists mainly of a 33% solution of hemoglobin.
3) RBCs lose nearly all organelles during their development.
4) The cytoplasm also contains an enzyme, carbonic anhydrase.
5) Lacking a nucleus and DNA, RBCs also are incapable of protein synthesis and mitosis.
RBCs lack mitochondria, hence they can only create ATP by anaerobic fermentation.
Red blood cells were designed to carry oxygen. They feature a bi-concave form that optimizes their contact area to absorb oxygen, a thin membrane that allows gases to readily permeate through it, are small & flexible so they may fit through small vessels, and contain haemoglobin, which binds to oxygen. Red blood cells can bend and stretch, they can cling to certain other cells, and they can communicate with immune cells. Their membrane has a variety of effects on this. The composition of the membrane has a significant impact on these functions. The protein that transports oxygen is called haemoglobin, and it is almost exclusively located in red blood cells (RBCs) rather than dispersed in plasma. Relative to a flat disc of the same size, the cell's biconcave shape has a larger surface area.
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The cytoplasm of red blood cells RBC mainly consists of a 33% solution of hemoglobin these features increase the capacity to carry oxygen to tissues. Here option 2 is the correct answer.
Hemoglobin is an iron-containing protein that binds to oxygen and gives red blood cells their characteristic red color.
The high concentration of hemoglobin in the cytoplasm of red blood cells allows them to carry a large amount of oxygen, which they can then transport to the tissues throughout the body. This characteristic is key to the red blood cells' ability to carry oxygen.
All the other options mentioned are correct as well, but they don't have a direct relationship with the ability of red blood cells to carry oxygen. Lacking mitochondria, RBCs rely exclusively on anaerobic fermentation to produce ATP, and RBCs lose nearly all organelles during their development.
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Location One: Select two events that you predict will be observed. If I explore two continental plates at a convergent boundary, then I will observe: __________________________
A. earthquakes
B. faults
C. ocean formation
D. mountains
E. volcanoes
F. island chains
G. seafloor spreading
please pick two! ^^
Answer: Volcanoes and earthquakes
Explanation:
collagen-producing lung cell atlas identifies multiple subsets with distinct localization and relevance to fibrosis
The German Institute for Molecular Medicine recently published a lung cell atlas that identified a distinct subset of lung cells that produce collagen.
The development of fibrosis and other lung diseases is significantly influenced by these cells, as we discovered using single-cell RNA sequencing, which makes them distinct from other lung cell types.
The findings of this study are significant because they advance our knowledge of the intricate connection between fibrosis development and the cells that cause it. A better understanding of these cells' phenotypes and how they contribute to the onset of fibrosis and other diseases may be possible thanks to Atlas.
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A forensic toxicologist wants to determine if a victim was under the influence of LSD. Which presumptive color test would best determine if LSD was present in his urine? Also, if positive, what color will the test be?
A). Van-Urk; orange-brown
B).Marquis; blue-purple
C).Marquis; orange-brown
D).Van Urk; blue-purple
Van Urk turns blue-purple in the determining of LSD present in his urine. Thus, Option D is correct.
What is Van Urk?For the silica gel thin layer chromatographic detection and identification of indole derivatives, there is a chromogenic reagent known as the Van Urk Salkowski reagent that is sensitive and specific. The present study looked at how various farming methods affected the microbial communities in an agricultural setting.
The distribution of microbes in agricultural soils fertilised with organic, semi-organic, and conventional fertilisers was examined in light of the current farming trend. Twenty different types of agricultural fields belonging to the Bangladesh Agricultural Research Institute were used to collect the soil samples (BARI, Gazipur).
From each sample, the presence of microorganisms that play beneficial roles in soil, such as those that fix nitrogen (Rhizobium sp., Azotobacter sp.), solubilize phosphate (Bacillus sp., Pseudomonas sp., Phosphobacteria), and produce auxin (Pseudomonas sp., Serratia sp., and Bacillus
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Answer:
Van Urk; blue-purple
Explanation:
ignore what that other person said lmbo
place the following steps in the correct order to represent the stages of transcription. rank the options below. the rna polymerase and the complementary rna strand are released along with the dna, reforming a double helix.
rna polymerase identifies the gene to be expressed.
RNA polymerase uses one strand of DNA, called the template strand, to produce a complementary RNA molecule
RNA polymerase exposes the nucleotide bases of the gene by unwiding the double helix
Transcription is the process of formation of RNA from DNA. RNA production takes place through various steps and the main enzyme responsible for it is RNA polymerase.
RNA polymerase attached to the promoter gene, after the double helix is unwounded. Complimentary nucleotides are selected as per the template strand and mRNAs are produced. When it reaches the terminator, the process stops, RNA polymerase and mRNA are released. So the correct order of step is as follows.
The RNA polymerase identify the gene which needs to be transcribed.RNA polymerase attaches to a part called promoter, which is a set of nucleotide act as the starter of the gene expression. This is called initiation. The double helix unwind and strands are separated.The RNA polymerase starts transcription, use the template strand to produce complimentary RNA. Each nucleotides are added in accordance to the base pairing. This stage is elongation.The RNA polymerase reaches the terminator, which is also a set of nucleotides that signals to stop the process. RNA polymerase as well as the RNA strand separates from DNA. Double helix is reformed. This is called termination.So, transcriptions happens mainly through 3 stages, Initiation, elongation and termination.
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as a serious dancer, justine watches what she eats. she knows that she is underweight, but fears that if she starts eating more that she will get fat. in addition to a preoccupation with food, she has also stopped menstruating. her behaviors suggest that she might be suffering from . anorexia nervosa bulimia nervosa compulsive exercise phobic disorder
As, justine watches what she eats, she knows that she is underweight, but fears that if she starts eating more that she will get fat and in addition to a preoccupation with food, she has also stopped menstruating, her behaviors suggest that she might be suffering from anorexia nervosa
Anorexia nervosa can be defined as eating disorder characterized by an abnormally low body weight also the patient have an intense fear of gaining weight and a version and perception of weight.
anorexia also has many symptoms like, the sense of fatigue, sluggish behavior, dry and yellow skin, vomiting, thinning of bones, having brittle hairs and nail, some serious could be Cardiac complication or Heart, kidney and liver failure.
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If subjected to sound frequencies of 25,000 to 100,000 cycles per second, which of the
following would be least affected?
A. a human being
B. a cheetah
C. a porpoise
D. a bat
E. a house cat.
Answer: D. a bat
Explanation:
A bat just picks up on the sound waves but does actualy hear stuff
D. A bat would be least affected by sound frequencies of 25,000 to 100,000 cycles per second. Bats use ultrasonic frequencies in their echolocation calls to navigate and locate prey, they have specialized ears and auditory systems that allow them to hear and process these high frequency sounds. While other animals like human, cheetah, porpoise and house cat would not be able to hear these ultrasonic frequencies and would not be affected by them.
what types of mutation are typically induced by ethyl methanesulfonate (ems)? (check all correct answers)
EMS ordinarily delivers just point transformations. Because of its strength and surely known mutational range, EMS is the most ordinarily involved synthetic mutagen in exploratory hereditary qualities.
Hereditary information acquired utilizing microorganisms recommends that EMS might deliver both GC to AT and AT to GC progress transformations. There is additionally some proof that EMS can cause base-pair inclusions or erasures as well as greater intragenic cancellations.
Ethyl methanesulfonate (EMS) is a mutagenic, teratogenic, and cancer-causing natural compound with equation C3H8SO3. It produces irregular transformations in hereditary material by nucleotide replacement; especially through G: C to A: T advances actuated by guanine alkylation.
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The organic compound ethyl methane sulfonate (EMS), with the formula C₃H₈SO₃, is mutagenic, teratogenic, and carcinogenic.
Through nucleotide substitution, it causes random mutations in genetic material, primarily through G:C to A:T transitions brought on by guanine alkylation. Point mutations are the norm for EMS. EMS is the most often utilized chemical mutagen in experimental genetics due to its potency and well-understood mutational spectrum. Then, genetic screens or other tests can be used to study the mutations brought on by EMS exposure.
Due to the mutagen's ability to fool the polymerases enzyme and its structure fitting into the active site much like nucleic acids, it can result in an insertion or deletion mutation. It is thus substituted for a nucleic acid. Due to the polymerase being active during repair and replication, Any nucleic acid is placed in the complementary strand because it is unable to recognize the proper base pair to pair with the mutagen. A frameshift mutation results from the intercalation's interference with the codon sequence, which shifts it by a base pair.
The complete questions is,
What types of mutation are typically induced by ethyl methane sulfonate (ems)? (check all correct answers) A. 2-aminopurine. B. Proflavine C. 5-bromouracil. D. Methane sulfonates
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Which of the following techniques involves passing a mild current through the brain to activate certain structures without damaging them? a. electroconvulsive tomography (ECT) b. magnetic resonance imaging (MRI) c. deep brain lesioning d. electrical stimulation of the brain (ESB)
Electrical Stimulation of the Brain (ESB) is a technique which involves passing a mild current through the brain to activate certain structures without damaging them.
Electrical brain stimulation (EBS), also known as focal brain stimulation (FBS), is a type of electrotherapy used in clinical neurobiology and research to stimulate a neuron or neural network in the brain by either directly or indirectly stimulating its cell membrane with an electric current. EBS is employed in both scientific and therapeutic settings.
Even at low currents and up to distances of four millimeters distant, macrostimulation stimulates neurons sparsely surrounding the electrode, according to research using two-photon excitation microscopy. This occurs without specifically selecting additional neurons that are located considerably closer to the electrode tip. This is because whether or not a neuron has axons or dendrites that pass within a 15 m radius of the electrode tip determines whether or not that neuron is activated. The volume around the tip of the neuron that activates axons and dendrites grows when the current is increased, and this also causes a rise in the number of neurons activated. Instead of synaptic activation, activation is most likely caused by direct depolarization.
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in achieving stable molecular configurations, which of these five atoms will bond with the fewest number of hydrogen atoms, and which will bond with the most? oxygen will bond with the fewest number of hydrogen atoms (2); phosphorus will bond with the most (5). both oxygen and sulfur will bond with the fewest number of hydrogen atoms (2); carbon will bond with the most (4). both phosphorus and sulfur will bond with the fewest number of hydrogen atoms (2); nitrogen will bond with the most (5). nitrogen will bond with the fewest number of hydrogen atoms (3); sulfur will bond with the most (6).
Carbon will bond with the majority of hydrogen atoms, whereas oxygen and sulphur will bond with the least (2).
(4). Chemical bonds, also known as electrical forces, may be categorised into five different groups: ionic, covalent, metallic, van der Waals, & hydrogen bonds. Two oxygen atoms are bound together by a covalent connection to form the diatomic molecule known as molecular oxygen (O2). Many organic compounds contain the carbon-hydrogen bond (C-H bond), which is a chemical link between hydrogen and carbon atoms. Since there is just one covalent link present, up to four hydrogen atoms can share the outer valence electrons that belong to carbon. Hydrogen bonds develop between nearby oxygen and hydrogen of adjacent water molecules in the case of water.
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which of the following represents the site of most of the important chemical reactions within a prokaryotic cell?
Cytoplasm represents the site of most of the important chemical reactions within a prokaryotic cell. It is also called translation because they make a logical target for antibiotics, as a loss of protein synthesis results in prokaryotic cell.
Cell expansion and growth which facilitates movement acts as a buffer and protects genetic material. The main function of cytoplasm in a prokaryotic cell is responsible for cell shape, transport material like genetic material and products for cellular respiration and storage.
Cytoplasm referred to an integral part of both eukaryotic and prokaryotic cells and maintain an optimal environment for the cellular organelles. It provides a platform upon which other organelles can operate within the cell.
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Evaluate each of the statements below. Select those that accurately describe the role of genes and chromosomes in the process of inheriting a specific trait. Choose all THREE that apply. Responses A Chromosomes are made of DNA.Chromosomes are made of DNA. B Alleles are the different forms of a gene that can exist.Alleles are the different forms of a gene that can exist. C Chromosomes contain genes that control the inheritance of traits.Chromosomes contain genes that control the inheritance of traits. D Genes are made of chromosomes and contain all of the genetic information for an organism.Genes are made of chromosomes and contain all of the genetic information for an organism. E There are 26 pairs of chromosomes in humans.
Explanation:
please explanations, questions not too clear
which of the following are characteristics shared by all living things, a fact that supports the conclusion of common ancestry?
Similarities between biological molecules, like structural homologies, can reveal shared evolutionary ancestry. At their most fundamental level, all living things share: similar genetic makeup (DNA) genetic sequences that are identical or very close.
What does ancestry mean?Ancestry is the term used to describe a person's ethnic background , descent, "roots," or ancestry, as well as the place of the person's birth, the birthplace of their parents, or the birthplace of their ancestors before they immigrated to the United States. Therefore, the phrase "genealogical ancestry" refers to forebears who may be identified in a family tree and pedigree. It is frequently quantified; for instance, if one of your eight great-grandparents belongs to X, you would refer to yourself as "one eighth X."
What does ancestry check for?These tests examine a person's complete genome and a huge number of individual changes (also known as single nucleotide polymorphisms, or SNPs). To assess a person's ethnic heritage, the outcomes are compared to related SNPs in a testing database.
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is a term used to describe changes in the normal cycles of the earth's climate that are attributed to human activity. disturbances in the cycle are central to these changes. there is an imbalance between the amount of that is released into the atmosphere and the amount that is removed by natural processes like photosynthesis. much of the excess in the atmosphere, which results from activities like burning fossil fuels, is believed to dissolve in the ocean rather than accumulate in the atmosphere. what remains in the atmosphere, along with other gases, is responsible for a in global temperatures. , another term for the shift in global temperatures, occurs because of what is called , whereby increased concentrations of gases in the atmosphere absorb and radiate heat back to earth. global warming is contributing to , which is causing changes to many of the earth's ecosystems.
The term used to describe changes in the normal cycles of the Earth's global warming that are attributed to human activity is "climate change." Disturbances in the cycle are central to these atmosphere changes.
There is an imbalance between the amount of carbon dioxide that is released into the atmosphere and the amount that is removed by natural processes like photosynthesis. Much of the excess carbon dioxide in the atmosphere, which results from activities like burning fossil fuels, is believed to dissolve in the ocean rather than accumulate in the atmosphere. What remains in the atmosphere, along with other gases, is responsible for a rise in global temperatures. This is known as "global warming" and it occurs because of what is called "greenhouse effect," whereby increased concentrations of gases in the atmosphere absorb and radiate heat back to Earth. Global warming is contributing to "climate change" which is causing changes to many of the Earth's ecosystems.
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which of these identifies the major elements of the pathway that blood takes through the heart in the correct sequence?
The major elements of the pathway that blood takes through the heart is Vena cava, right ventricle, pulmonary artery, left ventricle, aorta.
Blood enters the right atrium from the body, travels to the right ventricle, and is forced into the pulmonary arteries in the lungs. After collecting up oxygen, the blood returns to the heart via the pulmonary veins into the left atrium, then to the left ventricle, and finally to the body's tissues via the aorta.
Through the pulmonary valve, the right ventricle sends oxygen-depleted blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and sends it to the left ventricle via the mitral valve. The left ventricle sends oxygen-rich blood to the rest of the body via the aortic valve.
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estimate area of endoplasmic reticulum when it is in rectancular form using a model for its structure
The endoplasmic reticulum (ER) is a complex and dynamic organelle found within eukaryotic cells. Its structure can vary depending on the cell type and the functions it is performing.
In a rectangular model, the ER is composed of a series of flattened, stacked cisternae that form a network of flattened tubules and vesicles. To estimate the area of the ER in this model, one would need to know the length and width of the cisternae, as well as the number of cisternae present.
The area of a rectangle can be calculated using the formula:
length x widthTherefore, if the length and width of each cisterna are known, the total area of the ER can be calculated by multiplying the area of one cisterna by the number of cisternae present.
The structure of the ER can be more complex than a simple rectangle, and its size can also vary greatly depending on the cell type and stage of development. Also, there are different types of ER, like rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER), that have different structures.
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Compare the horseshoe crab that lives today with the fossil that is millions of years old. what kind of habitat do you think its fossilized ancestor lived in
From 445 million-year-old Ordovician age rocks in central and northern Manitoba, researchers have discovered rare new horseshoe crab fossils.
What kind of fossilization is that?The process of wrong language becoming ingrained and difficult to change is known as fossilization. The pronouns "he" and "she" are frequently used by experienced Spanish language learners. This error might have been made long ago.
How do fossils form?The soft body portions of a dead animal degrade, leaving the skeleton and other hard body parts remain. Sediment, which consists of tiny rock fragments, bury this. Sediment surrounding the skeleton starts to contract and convert to rock when more sediment layers are added on top.
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Structural brain changes have been linked to executive function. For example, age-related declines in _________________may affect white matter structures, which underlie all the areas important to executive functioning.a. serotoninb. the functioning of blood vesselsc. cognitive abilitiesd. unilateralization
Executive function has been linked to anatomical brain changes. White matter structures, the foundation of all regions critical to executive functioning, may be influenced by age-related changes.
It's similar to having a transportation system at a congested airport that manages the arrival and departure of dozens of planes on multiple runways: you can concentrate, hold, and work with data in mind, filter interruptions, and switch gears. The term executive function refers to the brain's air traffic control system.
What causes a lack of executive function?
ADHD is a common cause of executive function problems, but other potential causes include Alzheimer's disease, depression, schizophrenia, autism, and traumatic brain injuries. Depending on the cause, which can be determined by diagnosis, executive function problems can be treated with therapy and medication.
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within the nova microbe tutorial, which of the following is not one of the essential ingredients of life:
Microorganisms are minuscule living things that are tracked down surrounding us and are excessively little to be seen by the unaided eye. They live in water, soil, and in air.
The human body is home to a large number of these organisms as well, likewise called microorganisms. A few microorganisms make us debilitated, others are significant for our well-being.
Microbial variety is genuinely stunning, yet this large number of microorganisms can be assembled into five significant sorts: Infections, Microscopic organisms, Archaea, Parasites, and Protists.
A microorganism is a minuscule organic entity that may be a solitary cell or a settlement of cells. As a result of their moment size, they shouldn't be visible with unaided eyes. They can be tracked down in the water, air, soil, and inside our bodies and those of different creatures and plants.
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A microbe is a tiny organic object that can consist of a single cell or a colony of cells. They should not be visible to unassisted vision due to their tiny size.
They can be located in the water, the air, and earth, as well as inside of our bodies and those of various animals and plants.
Microorganisms are extremely little living entities that are found all around us but are too small to be seen without a microscope. They are aquatic, terrestrial, and aerated.
These creatures, also referred to as microbes, are widely distributed throughout the human body. Some microbes render us helpless, while others are vital to our health. Although the diversity of microorganisms is truly amazing, they can be divided into five major groups: infections, microscopic organisms, archaea, parasites, and protists.
The complete question is,
within the nova microbe tutorial, which of the following is not one of the essential ingredients of life: A. Any virus B. Any organisms that require a microscope to be seen C. Any bacteria D. Any disease-causing organism
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