Mitochondrial DNA can be traced for generations best describes mitochondrial DNA (mtDNA).
Mitochondrial DNA is the circular chromosome found inside the cellular organelles called mitochondria. Located in the cytoplasm, mitochondria are the site of the cell's energy production and other metabolic functions. Offspring inherit mitochondria and as a result mitochondrial DNA from their mother.
The mitochondrial genome is circular, whereas the nuclear genome is linear. The mitochondrial genome is built of 16,569 DNA base pairs, whereas the nuclear genome is made of 3.3 billion DNA base pairs. Unlike the DNA inside the nucleus, it is not a mixture of our parent's DNA, and each person's mtDNA is nearly identical to his or her mother's mtDNA.
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Zara is using a microscope to look at some animal cells on a slide. She knows that there are animals cells on the slide but when she looks through the microscope, she cannot see any cells. List reasons
Answer:
1. The specimen perhaps hasn't been stained so no structures can be seen.
2. If a light microscope, perhaps the light isn't turned on.
3. The specimen may not bein focus
4. Microscope not turned on
5. Not smeared enough to see the specimen
6. Specimen is too thick - diffraction barrier of light microscopes in which light can't focus the specimen - Low resolving power of light microscope.
Make a claim- Does meiosis increase or decrease genetic variations?
Answer:
it increases
Explanation:
1. diamond is concerned about getting all the essential amino acids from her diet. of the 20 amino acids that are commonly found in living tissues, how many of them are considered essential and cannot be made by a healthy adult?
Of the 20 amino acids, the essential amino acids are 9 in number and they cannot be made by a healthy adult.
Amino acids are the structural components that act as monomers for the synthesis of proteins. The common structure present in all the amino acids is composed of an amino group, a carboxylic group, a hydrogen atom and a variable R group, all attached to the common α-carbon.
Essential amino acids are those that cannot be made by the human body itself and are therefore required by an outside source. This source majorly is diet. The names of all the essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
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normally, crossing over occurs between homologous regions of homologous chromosomes. sometimes mistakes happen, and crossing over occurs between non homologous regions of homologous chromosomes, resulting in duplications and deletions. what characteristic of a chromosome would make non homologous recombination more likely?
The characteristic of a chromosome would make non homologous recombination more likely to be nonhomologous regions of homologous chromosomes.
Biology uses the term "single nucleotide polymorphism" (SNP) to describe a single base pair variation that is prevalent in the population. A mutation is defined as any change in the DNA sequence. In more detail, a polymorphism is any genomic region where at least two distinct sequences are discovered, with each sequence present in at least 1% of the population. The word "polymorphism" is frequently used to describe a normal variation or one that doesn't directly cause sickness. Additionally, the threshold of at least 1% prevalence for a variation to be categorized as a polymorphism is somewhat arbitrary; if the frequency is lower than this, the allele is often recognized as a mutation.
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Which level of organization is shown in the image?
• cell
• tissue
•organ
•organ system
What makes plants wilt?
A. A lack of motility that would usually come from the nucleus
B. A lack of stablity that would usually come from the ribosomes
C. A lack of turgor pressure that would usually come from water stored in the central vacuole
*Brainliest* Plsss the correct answer :) TY
Answer:
I think the answer is C
Explanation:
Sorry if I'm wrong.
Answer: B
Explanation: Dehydration
Which part of a cell is the fluid environment where molecules are broken down and new molecules made?
How do i transform a table into a histogram
Answer:
Sep 21, 2020
7 key moments in this video
From 00:40
Decide on bin limits
From 01:56
Entering Bin Limits
From 02:21
Generate the frequency table
From 03:13
Review the frequency table
From 05:27
Add Axes titles
From 05:49
How to make the bars in the chart thick
Explanation:
the functional classification of joints is based on the type and degree of movement that they allow. what are the 3 types of joints in the functional classification?
The 3 types of joints in the functional classification are immobile joint, moveable joints and freely moveable joints.
In the field of science, synarthroses can be described as joints that are immovable.
On the other hand, those joints can move slightly and represent slight movement are called amphiarthroses.
Diarthroses can be described as joints that can move freely and completely.
Hence, based on degrees, synarthroses have no movement, amphiarthroses have little whereas Diarthroses have free movement.
Examples of synarthroses are sutures. Example of a diarthrosis is synovial joint and example of amphiarthroses are symphyses.
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learning is a result of changes in the strengths of synapses. which of the following is an example of something that would increase the strength of a synapse? group of answer choices increase in blood flow increase in the size of the action potentials increase in myelination increase in the number of receptors on the postsynaptic side of the synapse
One example of something that can increase the strength of a synapse is an increase in the number of receptors on the postsynaptic side of the synapse.
Explanation:
A synapse is a meeting point between the axon terminal of one neuron and another. Synapses are formed by swollen axon terminals. Inside the synaptic cytoplasm, there are synaptic vesicles. When the impulse reaches the end of the neuron, the vesicles move, then fuse with the pre-synaptic membrane and release acetylcholine. Acetylcholine diffuses through the synaptic cleft and attaches to receptors on the postsynaptic membrane. The attachment of acetylcholine to the receptor triggers an impulse in the next nerve cell. The enzyme acetylcholinesterase breaks down acetylcholine whose job is done.
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Which cells, prokaryotes, and eukaryotes, have a cell membrane, and which do not?
bioremediation uses microbes that choose one: a. can modify environmental toxins through normal metabolism. b. can reproduce rapidly and overcome other microbial species. c. are parts of the microbiome. d. can assimilate nitrogen into nitrate.
Bioremediation uses microbes that a. can modify environmental toxins through normal metabolism.
Bioremediation broadly refers to any process wherein an organic system, living or useless, is hired for casting off environmental pollution from the air, water, soil, flue gasses, industrial effluents, and many others., in natural or artificial settings.
Bioremediation technique is degrading, getting rid of, changing, immobilizing, or detoxifying numerous chemical compounds and physical pollutants from the environment via the interest of bacteria, fungi, algae, and plants.
Bioremediation allows for smoothing up water sources, creating more healthy soil, and improving air great around the globe. but not like excavation-based totally remediation techniques, which may be disruptive, bioremediation is less intrusive and might facilitate remediation of environmental impacts without adverse sensitive ecosystems.
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Which is a product of photosynthesis?(1 point)
Responses
sugar
sugar
water
water
carbon dioxide
carbon dioxide
sunlight
sunlight
Answer:
sugar is the answer
Explanation:
sugar and oxygen are both products of photosynthesis
Answer:sugar
Explanation:
someone pls help me with this
Answer:
A
Explanation:
Answer:
(a) ATP , Carbon dioxide
Cells arise only from previously___with cells passing copies of their____ on to their daughter cells.
A) Dead cells, divided cells
B) Alive cells, proteins
C) Existing cells, genetic material
D) Alive cells, dead cells
when you have a severe fever, what grave consequence may occur if the fever is not controlled?when you have a severe fever, what grave consequence may occur if the fever is not controlled?change in the tertiary structure of your enzymesbinding of your enzymes to inappropriate substratesdestruction of your enzymes' primary structureremoval of amine groups from your proteinsremoval of the amino acids in the active sites of your enzymes
"Change in the folding of enzymes" is the grave consequence that may occur if the fever is not controlled.
When someone gets a fever, their body temperature is high. Infections typically cause it. If a fever is not treated, a change in the way your enzymes fold may have serious consequences. Hydrogen bonds and other weak intermolecular interactions hold enzymes in place while they are folding.
The high temperatures brought on by a fever can disrupt these relationships. Enzymes that are not folded can harm a cell because they cannot fulfill their necessary activities when they are unfolded. This is because their three-dimensional form determines how they work. Because heat accomplishes those things to proteins, the other options are not fatal outcomes of a fever.
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The tendency to respond to a conditioned stimulus that is similar, but not identical, to the original conditioned stimulus is called _____.
The tendency to respond to a conditioned stimulus that is similar, but not identical, to the original conditioned stimulus is called Stimulus generalization.
Stimulus generalization is the capacity to react in a new situation using a strategy learned in previous, comparable situations. The difficulty lies in determining which aspects of the learning circumstances ought to be applied to all circumstances.
The phenomenon is known as stimulus generalization when an organism's response that was conditioned by one stimulus can be elicited by another stimulus with the same properties. A stimulus that has the potential to elicit a conditioned response is known as a conditioned stimulus. In the experiment that has been described, the ringing of the bell served as both the conditioned stimulus and the conditioned response. It is essential to comprehend the transformation of the neutral stimulus into the conditioned stimulus.
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suppose a young boy is always tired and fatigued, suffering from a metabolic disease. which of the following organelles is most likely involved in this disease? mitochondria golgi apparatus ribosomes lysosomes
Option (A), the mitochondria, is the organelle that is most likely involved in this condition.
What are Mitochondria?Most eukaryotic species contain an organelle called a mitochondrion, which has two membranes.
The primary method through which mitochondria manufacture adenosine triphosphate, a chemical energy source for cells, is through aerobic respiration.
The mitochondria, which are membrane-secure cell organelles (mitochondrion, singular), create the most chemical energy to power the cellular metabolic reactions.
The mitochondria in cells are the mechanisms responsible for converting dietary energy into a form the cell can use.
Each cell contains countless hundreds of thousands of mitochondria.
The mitochondria, which are membrane-bound cell organelles, generate the majority of the chemical energy needed to power a cell's metabolic processes (mitochondrion, singular).
The small molecule adenosine triphosphate serves as a reservoir for the chemical energy produced by the mitochondria (ATP).
Therefore, option (A), the mitochondria, is the organelle that is most likely involved in this condition.
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24. assume independent assortment and start with a plant that is dihybrid a/a;b/b: a. what phenotypic ratio is produced from selfing it? b. what genotypic ratio is produced from selfing it? c. what phenotypic ratio is produced from testcross- ing it? d. what genotypic ratio is produced from testcrossing it?
A. The phenotypic ratio is produced by selfing it:
9: A/_; B/_3: A/_; bb3: aa; B_1: aa; bbB. The genotypic ratio from selfing it:
1: Aa; Bb1: Aa; bb1: aa; Bb1: aa; bbC. The phenotypic ratio for a test cross is 1:1:1:1.
D. Test matings with heterozygous individuals should consistently yield a dominant-to-recessive phenotype ratio of approximately 1:1. Here the ratio of both genotype and phenotype is 50:50.
To estimate the genotype-phenotype relationship, calculate the number of Punnett squares for each allele aggregate. Therefore, in this example, we use one Punnett square box for RR and RR and two Punnett square boxes for Rr.
Calculating the Punnett rectangular ratio as 1:2:1 offers the genotypic ratio, giving the genotypic ratio. One obvious way to find out your genotype is to do a genetic test. Companies like 23andMe can do this fairly cheaply these days. But for this to work, scientists must understand the genetic differences that lead to traits.
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small, nonpolar, hydrophobic molecules such as fatty acids easily pass through a membrane's lipid bilayer. very slowly diffuse through a membrane's lipid bilayer. require transport proteins to pass through a membrane's lipid bilayer. are actively transported across cell membranes.
Small, nonpolar, hydrophobic molecules such as fatty acids pass readily through a membrane's lipid bilayer.
The cell membrane, which is selectively permeable and controls the passage of molecules into and out of the cell, facilitates the movement of substances or molecules throughout the cell.
A thin polar membrane composed of two layers of lipid molecules is the lipid bilayer. These membranes are flat sheets that surround all cells and act as a continuous barrier.
A lipid-rich cell membrane will not repel small, nonpolar hydrophobic molecules like fatty acids, so they enter the cell through simple diffusion. This indicates that they easily and without assistance penetrate the lipid bilayer of a membrane. Because they are a class of lipids and soluble in the lipid layer of the cell membrane, fatty acids are able to pass through the lipid-bilayered membranes easily.
Small, nonpolar hydrophobic molecules such as fatty acids
a. pass readily through a
membrane's lipid bilayer
b. diffuse very slowly through the lipid bilayer
c requires special channels to enter a cell
d. are actively transported across cell membranes
c. must enter the cell via endocytosis
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At that time its sensible heat released over the time period it means that it releases heat from any degree Celsius up to zero degree Celsius.
It happens because heat is released from water to surrounding by the help freezer or refrigerator.
When latent heat is released than phase change will take place. It means that when water reaches at zero degree Celsius than latent heat will released than water become ice at zero degree Celsius.
The word associated with the phenomenon is phase change.
What is freezing process?Freezing has been the process in which the phase change or state change takes place and it means that a process in which a liquid change into solid.
Freezing process can be achieved by the extraction of heat i.e or removing latent heat, latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without change in temperature.
Therefore, At that time its sensible heat released over the time period it means that it releases heat from any degree Celsius up to zero degree Celsius.
It happens because heat is released from water to surrounding by the help freezer or refrigerator.
When latent heat is released than phase change will take place. It means that when water reaches at zero degree Celsius than latent heat will released than water become ice at zero degree Celsius.
The word associated with the phenomenon is phase change.
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jeff was in a fatal accident in which he died almost instantly due to a nervous system injury that interfered with essential life functions such as heartbeat and respiration. which part of jeff's nervous system is most like to have been injured?
The injury that caused Jeff's immediate death and interfered with essential life functions like heartbeat and respiration occurred in the brainstem.
The brainstem is a vital region of the central nervous system located at the base of the brain. It acts as a bridge between the brain and the spinal cord and is responsible for regulating several essential functions necessary for life, including:
Autonomic functions: The brainstem controls autonomic functions that are essential for survival, such as heartbeat (cardiac function) and respiration (breathing).
Cardiovascular control: The brainstem contains centers that regulate blood pressure, heart rate, and the constriction/dilation of blood vessels.
Respiratory control: The brainstem is involved in controlling the rate and depth of breathing.
Reticular activating system (RAS): The brainstem contains the reticular activating system, which plays a critical role in maintaining consciousness and alertness.
A severe injury to the brainstem can disrupt these vital functions, leading to immediate and fatal consequences, such as the inability to maintain heartbeat and respiration, resulting in rapid death.
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the free energy released by atp hydrolysis can be used to drive endergonic reactions, such as the conversion of glutamic acid to glutamine. as you saw in the video, the synthesis of glutamine from glutamic acid is a two-step process: atp phosphorylates glutamic acid. ammonia displaces the phosphate group, forming glutamine. how does the phosphorylation of glutamic acid (glu) provide energy for the rest of the reaction to occur?
When a phosphate is added to glutamate, a phosphorylated intermediate with higher free energy is created. Thus, the phosphate can be replaced by ammonia in an exergonic process.
What are exergonic reactions?A reaction is considered exergonic if free energy is released during the reaction (for example, during cellular respiration). The line depicts the reaction's progression. The process is slowed down by activation energy (1).
What kinds of reactions are exergonic examples?Exergonic reactions happen on their own (no outside energy is required to start them). Exothermic reactions, such as the combining of sodium and chlorine to create table salt, combustion, and chemiluminescence are examples of exergonic reactions (light is the energy that is released).
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researchers often want to isolate a certain type of rna. for some rna species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dt). the desired rna will stick to the beads while unwanted rnas will flow through the column. the retained rna can then be eluted. what rna species can be purified using this method? researchers often want to isolate a certain type of rna. for some rna species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dt). the desired rna will stick to the beads while unwanted rnas will flow through the column. the retained rna can then be eluted. what rna species can be purified using this method? eukaryotic mrna eukaryotic rrna bacterial mrna bacterial rrna
According to the given statement Eukaryotic mRNA species can be purified using this method.
The correct option is C.
What is an eukaryotic ?Any cell or organism that has a distinct nucleus is said to have been eukaryote. The nucleus of a eukaryotic cell, which contains a well chromosomes (bodies holding the genetic material), is protected by a nuclear membrane.
What are eukaryotic cells made of?Eukaryotic cells can also have other organelles outside the nucleus, such as mitochondria, plastids, the endoplasmic, the Golgi apparatus, and lysosomes. Each of these organs carries out a distinct task that is essential to the survival of the cell.
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The complete question is -
Researchers often want to isolate a certain type of RNA. For some RNA species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dT). The desired RNA will stick to the beads while unwanted RNAs will flow through the column. The retained RNA can then be eluted.
What RNA species can be purified using this method?
A. bacterial mRNA
B. bacterial rRNA
C. eukaryotic rRNA
D. eukaryotic mRNA
Phospholipids are found in a limited number of foods. They consists of a glycerol backbone with two fatty acids and a compound that contains phosphate. Why are they important in food and in the body?.
Lipids serve three primary biological functions in the body: they serve as structural components of cell membranes, they store energy, and they serve as important signaling molecules. Triacylglycerols (also known as triglycerides), phospholipids, and sterols are the three main types of lipids.
What is a phospholipid made of?A phospholipid molecule has two hydrophobic fatty acid tails and one hydrophilic phosphate moiety joined together by an alcohol or glycerol molecule . phospholipid form lipid bilayers as a result of this structural arrangement and are an essential component of all cell membranes.Phospholipids are amphiphilic molecules with a glycerol backbone and two hydrophobic fatty acyl tails.Lipids serve three primary biological functions in the body: they serve as structural components of cell membranes, they store energy, and they serve as important signaling molecules. Triacylglycerols (also known as triglycerides), phospholipids, and sterols are the three main types of lipids.To learn more about : phospholipid
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If an oak tree has 6 chromosomes in its reproductive cells, then it means that it has 12 chromosomes in its ________cells.
If an oak tree has 6 chromosomes in its reproductive cells, then it means that it has 12 chromosomes in its somatic cells. This is like this because reproductive cells are generated by meiosis, which is a reductional cell division, producing four cells with half of the genetic material of the original cell and different from each other.
For which type of lesion would a bandage be most important in order to keep bacteria and other pathogens from entering the body?.
sean is performing barbell squats with the intent of building up his quadriceps muscles. to make the quadriceps perform more work and increase the efficiency of the exercise, he should:
To make the quadriceps perform more work and increase the efficiency of the exercise, Sean should minimize the amount of trunk flexion at the start of the concentric phase.
We can describe trunk flexion as forward pelvic tilt and flexion of the spine. This activity causes more pressure on the muscles of your quadriceps and hence helps in building them.
The quadriceps can be described as the muscles that are present in the front region of the thigh. These area has more muscle mass as compared to other areas of your brain and hence need to be worked on so that the muscle mass here can be reduced.
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are examples of naturally occurring biological hazards. a. ddt and dde b. viruses and salmonella c. crude oil seeps and radon gas d. carbon dioxide and nitrogen gas
(b) Viruses and Salmonella are examples of naturally occurring biological hazards.
Biological hazards refer to the environmental threats which are posed by biological agents such as disease or infection causing micro-organisms called pathogens e.g. Viruses and Salmonella are classified as naturally occurring biological hazards.
Viruses are infectious particles. The genetic material of viruses is enclosed within a protein coat i.e. capsid. Salmonella is a rod-shaped bacteria responsible for causing an infection known as salmonellosis in humans.
DDT and DDE, crude oil seeps and Radon gas as well as Carbon dioxide and Nitrogen gas are all examples of chemical hazards that adversely affect human health.
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Why is there a need to produce okazaki fragments on the lagging strand, but not on the leading strand of dna?.
There is a need to produce Okazaki fragments on the lagging stand, but not the leading strand of the DNA because the two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5' to 3' direction only.
The leading strand of the DNA can be described as a strand that is in the 5' to 3' direction. As the DNA polymerase that is required for replication works in this direction hence there is no need of Okazaki fragments to be formed for the leading strand.
The lagging strand, on the other hand, is in the 3' to 5' direction which is the opposite of the working of DNA polymerase. Hence, for the lagging strand, Okazaki fragments are formed which are then joined by the DNA ligase to make the new strand from the lagging strand.
Although a part of your question is missing, you might be referring to this question:
Why is there a need to produce Okazaki fragments on the lagging strand, but not on the leading strand of DNA?
-The leading strand opens first, and so Okazaki fragments are not needed. The lagging strand unwinds second resulting in the need to produce Okazaki fragments.
-The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5′ to 3′ direction only.
-It is substantially more efficient to make several shorter strands rather than one longer strand of DNA.
-By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used for chromosomal replication.
-There is not enough cellular DNA ligase for bonding Okazaki fragments together if they were produced from both parental strands.
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