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What is a neuron and its function?

The neuron is the basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells. Neurons are cells within the nervous system that transmit ...
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Answered by Marie B. • Biology tutor
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Describe the role of RuBISCO in photosynthesis.

RuBISCO is an enzyme that is involved in the light independent reactions of photosynthesis, specifically, in the Calvin Cycle. This reaction takes place in the stroma. It catalyses the reaction of carbon dio...
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Answered by Claudia D. • Biology tutor
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Outline the structure and function of the plasma membrane

The plasma membrane is composed of a phospholipid by-layer. These phospholipid molecules are arranged in a double sheet which are stable yet fluid. These molecules have hydrophobic tails and hydrophilic head...
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Answered by Nathan L. • Biology tutor
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How does the electrical system of the heart work?

The electrical activity of the heart begins in the sinoatrial node which is a collection of pacemaker cells located in the right atrium. These cells spread electrical activity across the atrium causing both ...
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Answered by Emma M. • Biology tutor
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What conditions are needed for evolution by natural selection to arise?

Evolution by natural selection arises when these three properties are present in a system Heredity - offspring resemble their parents in discrete characteristics. Variation - there are heritable differences ...
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Answered by Richard A. • Biology tutor
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