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Explain how the chromosome number is halved during meiosis.

Meiosis is formed of meiosis I and meiosis II. You start with a diploid cell (2n). The DNA is replicated in this diploid cell and recombination occurs, where the two chromosomes may swap over bits of DNA.Mei...
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Answered by Susannah W. • Biology tutor
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What is the induced-fit model of enzyme action

Enzyme has an active site that is not quite complementary to substrateActive site changes shape when substrate binds It becomes complementary to substrate
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Answered by Kelvin C. • Biology tutor
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Can you explain the difference between simple and facilitated diffusion?

The way I remember this is that s imple diffusion is simple , and as such, there are no transporters involved. It is also simple in the sense that molecules may only travel passively from a high concentratio...
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Answered by Shaqil C. • Biology tutor
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What is the function of mitochondria in an animal cell?

Mitochondria is the ‘power house’ of the cell and is where aerobic respiration occurs. Mitochondria provides energy for most chemical reactions in the cell in the form of ATP which is generated via aerobic r...
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Answered by Zayd N. • Biology tutor
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Explain the mechanism of expiration in the human body.

Expiration at rest in the human body is a passive process, due to elastic recoil in the muscles responsible to inspiration. The Diaphragmrelaxes and moves up, The intercostal muscles relaxes and the rib cage...
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Answered by Elwy L. • Biology tutor
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