Answer:
sometimes.
Explanation:
external gills are most typically found in amphibians however fishes have internal gills.
The answer isnt yes or no, different species have different gills. Some of them internal others external. Hopefully this answers your question :)
If a cell that is about to divide has 22 chromosomes how many chromatids does it have? How many centromeres does it have?
44 chromatids 2 centromeres, If a cell that is about to divide has 22 chromosomes.
What are chromosomes?In the synthesis phase, the number of chromatids doubles while the number of chromosomes remains constant. Although the number of chromatids is unaffected, anaphase doubles the number of chromosomes.
Depending on whether or not the DNA has replicated and when the sister chromatids split, the chromosome changes during the cell cycle.
Meiosis I and Meiosis II are the two division cycles that occur during a meiotic cell division. Since the genetic material duplicates during the S phase of meiosis I, there will be 2n chromosomes during metaphase I.
Therefore, if a cell that is about to divide has 22 chromosomes it have 44 chromatids and 2 centromeres.
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Hi, what is the Calvin cycle or light-independent reaction, and what is the light-dependent reaction? pls, explain what happens on the stage.
Answer:
The Calvin Cycle is a process used by plants to turn Carbon Dioxide from the air into Sugar. Sugar is the food that autotrophs need to grow.
The light dependant reaction is
The reaction which depends on sun light and ends right after light goesLike NADPH formation
write an analogy of a negative feedback loop (basically an example of a negative feedback loop but in a story)
Answer: My life is so hard, I have to WALK to school in the Rain every single day. You think that's Bad I have to walk in the pollution, Which hurts people lungs.. They're is nothing else to say but pollution is one of the top Priority's that are causing the earth to die.
Something like that make feedback about a ad cause on the earth or a good one and turn it into a negative thing.
do prokaryotic cells have membrane bound organelles
Answer: No
Explanation : if not mistaken prokaryotic cells have no internal membrane-bound organelles within their cytoplasm , but they do contain ribosomes.
What releases enzymes to digest molecules outside of a cell
Answer: Lysosomes
Explanation:
The answer is Lysosomes
8. What was available for the family's second baby diagnosed with SMA that wasn't available for their
first?
There's no complete cure for it. They can try therapy called Zolgensma. also called nusinersen (Spinraza) and risdiplam (E
refer to vs map: gene expression—flow of information from gene to protein tour. in which ribosome site would you find the uncharged trna?
Answer:
Elongation
Explanation:
Peptidyl Transferase takes the peptide chain (amino acids) from the tRNA in the P-site and attaches it to the amino acid in the A-site. The now-uncharged tRNA in the P-site is expelled from the Ribosome (possibly through the E-site). The Ribosome moves down the mRNA by one codon.
−6 = b/ 18
i am having trouble doing this problem i dont understand it
Explanation:
-6 can only be changed by a negative so if -6=b/18 Question what is b? b=18 so it's actually or can be -6=b18
The limb of an alligator, when compared to that of a dog supports which type
of evidence of evolution?
A.embryology
B.fossil record
C.homologous stucture,
D.geographic distribution.
No links or bots please and thank you
Glycolysis requires an input of energy. What molecule provides this energy?
Answer:
Glycolysis is actually a series of ten chemical reactions that requires the input of two ATP molecules. This input is used to generate four new ATP molecules, which means that glycolysis results in a net gain of two ATPs.
Explanation:
hope it helps
what does the author mean when she describes easter island as ""a destination with solitude built into its dna""?
A destiny with loneliness built into its DNA why, the DNA of the peoples of Easter Island is unique, there is a theory that suggests that long before Europeans discovered the island (in 1722), it served as a meeting place for the Polynesian people and Native Americans. Thus, the Rapa Nui would have in their DNA a mixture of these peoples. That theory was driven by an article published in 2014 that showed that today's Rapa Nui have 8% Native American DNA in their genome.
The why of solitary DNA
The Rapanui, who populated Easter Island,
Had no contact with the Native Americans until the arrival of the Europeans. Or if they did, it left no trace in their genes. That's what a study that analyzed ancient DNA of the island's inhabitants claims.These results call into question previous research that claims that there was contact and that it may have occurred several centuries earlier.
This is the first time Rapa Nui's ancestral DNA has been sequenced. It's the result? None of the five samples showed DNA from Native American ancestors.
What is right so far? It doesn't seem like much... the mysteries of Easter Island continue...
In this way, the author wanted to say that the DNA of the peoples of Easter Island is unique.
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define the following terms:dispersion and refraction
Explanation:
Dispersion of light is the splitting of white light into its constituent colors due to the refractive index of the surface and the wavelength of the light. If the light entering the prism is not of a single colour then the emergent beam also has different colours arranged in a definite order.
In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.
explain how carbon dioxide is cycled between the tree and fox. name the specific processes involved.
Answer:
When the fox takes in the oxygen and throws out carbon dioxide as a waste material than the tree also takes in carbondioxide and throws out oxygen as an waste material than look at the interrelationship between the two living organisms.
What are the advantages of cell division using meiosis?
Answer:
the advantages of cell division using meiosis is that it allows for the expansion of new traits because of the process of crossing over.
Explanation:
hope this helps you!
Which factor is present in higher amounts in winds that come from oceans than winds that come from land?
ait pressure
cool air
warm air
water vapor
Answer:
Which factor is present in higher amounts in winds that come from oceans than winds that come from land?
ait pressure
cool air
warm air
water vapor
Answer:
Water Vapor
Explanation:
It worked for me, hope it helps you!
What is the equation for a photosynthesis???????????????
[tex]\large\huge\green{\sf{Answer:-}}[/tex]
6CO2 + 6H2O → C6H12O6 + 6O2.The equation for photosynthesis is given as:
6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂
PhotosynthesisPhotosynthesis is the process by which green plants manufacture their food from carbon dioxide and water in the atmosphere using sunlight as an energy source.
Carbohydrates are produced while oxygen is given off as a by-product in photosynthesis.
During photosynthesis, the energy from the sunlight is trapped by the chlorophyll found in the chloroplast and used to energize the reactions involved in photosynthesis.
The equation for photosynthesis is given as:
6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂
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Short Answer
1. What is the relationship between a calorie and a Calorie? If a person eats 2000 calories, how many
Calories has he eaten?
a
Answer:
calories and Calories are the same thing, and if someone eats 2000 calories then they have eaten 2000 calories
Explanation:
If you push something out of someone’s hands, which law of motion is it?
Answer:
an applied force.
Explanation:
Cartilage tissue is invaded by blood vessels and ___________________that first form spongy bone at the primary ossification center in the diaphysis.
Answer:
osteoblasts
Explanation:
Carly wants to determine if the amount of time spent on social media has an effect on grades. What is the dependent variable?
Answer: Number of effects on grades
Explanation:
what kingdom is the spongy parenchyma cell in? describe the features of this kingdom. what are 2 other organisms that are in this kingdom?
Answer: It is the plant kingdom. Two other items in this kingdom are roses and grass. Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes.
Explanation:
Hope this helps
Have a great day
~zero~
Which statement describes functions of anti bodies
Answer:
Explanation:
Antibodies have three main functions: 1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization). 2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).
a signal molecule which can bind to an enzyme and shut down its activity by altering the shape of the enzyme.
Answer:
Enzyme inhibitor
Explanation:
An enzyme inhibitor is a molecule that binds to an enzyme and decreases its activity. By binding to enzymes' active sites, inhibitors reduce the compatibility of substrate and enzyme and this leads to the inhibition of Enzyme-Substrate complexes' formation, preventing the catalysis of reactions and decreasing the amount of product produced by a reaction.
Which classification of teeth is when they are chisel shaped and exert a shearing action used in biting
Answer:
Incisors
Explanation:
During respiration, most atp is formed as a direct result of the net movemnet of
Answer:
During respiration, most atp is formed as a direct result of the net movement of protons flowing through a channel
retroviruses - Examples of RNA viruses are Cvid-19 or the virus that causes __
Answer:
The retrovirus known as human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS) in humans.
Explanation:
What is a nucleotide?
A) a monomer made of an adenosine triphosphate, a phosphate, and a sugar
B) a DNA segment
C) a monomer made of a 5-carbon sugar, a phosphate group, and a nitrogenous base
D) a polymer made of DNA and RNA
Explanation:
Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid and ribonucleic acid, both of which are essential biomolecules within all life-forms on Earth.
(please help ASAP!) Which statement about evolution is accurate?(1 point)
a. DNA is the only extant evidence supporting the theory of evolution.
b. Animals, plants, and microbes have their own separate, unrelated ancestries.
c. Living things have adapted and changed over time for specific, discoverable reasons.
d. Scientists no longer study evolution because it has been proven.
Answer:
C: Living things have adapted and changed over time for specific discoverable reasons.
Explanation:
Answer:
C. Living things have adapted and changed over time for specific, discoverable reasons.
Explanation:
Survival of the fittestIt is undefined law of the nature that one has to change and adapt to its environment in order to survive. Humans are the prime examples of the process as with time we have directed our actions to run parallel with the changing environment and things around us in order to survive.
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Can anyone explain capillary action in the circulatory system in simple terms?
Please make me as brainlist
Capillary action is defined as the spontaneous flow of a liquid into a narrow tube or porous material.
Which of the following correctly describes the two phases of the cell cycle?
A. Cells grow and develop during interphase. Cells reproduce during the mitotic phase.
B. Cells grow and develop during the mitotic phase. Cells reproduce during the interphase.
C. The nucleus of a cell divides during interphase. The cytoplasm of a cell divides during mitotic phase.
D. The nucleus of a cell divides during mitotic phase. The cytoplasm of a cell divides during interphase.
Answer: the answer is A
Explanation:
Cell cycle refers to the series of processes that leads to the growth/development and division of a cell. The cell cycle uses MITOSIS for cell growth. Mitosis comprises of two distinct stages namely: INTERPHASE AND MITOTIC PHASE. The interphase is referred to as the resting phase of the cell in which the cell grows and develops.
On the other hand, MITOTIC PHASE is the stage where the actual division of the nucleus (karyokinesis) and cytoplasm (cytokinesis) generally called CELL DIVISION occurs. Therefore, the cell reproduces i.e. one cell forming two, in the mitotic phase.