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What is the function of the myelin sheath?

Neurones can either be myelinated - they are sorrounded by a myelin sheath, or unmyelinated - they are not surrounded by a myelin sheath. The myelin sheath is made up of Schwann cells and there are gaps in t...
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Answered by Chloe R. • Biology tutor
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What is the role of ATP in a cell?

Adenosine triphosphate (ATP) is a small molecule that acts as a coenzyme within a cell. The main role of ATP is to provide energy. Below are the ways it provides energy which can described in an exam. 1) A s...
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Answered by Chloe R. • Biology tutor
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How is blood glucose maintained in the body?

The control of blood glucose levels is an example of homeostasis . The human body requires glucose for normal respiration of cells, but the blood levels is in a narrow range . Insulin and glucagon are hormon...
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Answered by Mirac D. • Biology tutor
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What is the role of mitochondria in animal cells?

Mitochondria are organelles which provide the energy used up by the cell in respiration , through producing molecules called ATP . Some cells have loads of mitochondria, and other cells have very little. For...
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Answered by Mirac D. • Biology tutor
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What factors contribute to phenotypic variation between organisms?

Let us first understand what is meant by the term "phenotypic variation". Simply, the phenotype of an organism is its observable characteristics - like how it looks, how it behaves, and so on. Diff...
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Answered by Faheem M. • Biology tutor
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