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What are the key differences between plant and animal cells?

There are several important differences between plant and animal cells that will be key to remember in the exam. Namely: - Plant cells have a rigid cell wall whereas animal cells have a cell membrane - Plant...
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Answered by Jake C. • Biology tutor
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Why is ATP used as an energy store in cells?

ATP is an unstable molecule therefore it releases the energy stored readily and quickly, this is essential for metabolic processes in the cell such as active transport and protein synhesis. As well as being ...
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Answered by Joscelin S. • Biology tutor
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What are two ways which the body cools itself down when too hot?

Vaso-dilation: blood vessels near to the skin's surface dilate which allows more heat to be lost. This is because more blood can flow through as there is more room in the lumen. Sweating: the hotter we are, ...
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Answered by Hannah P. • Biology tutor
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What is the difference between the primary and secondary immune response?

The Primary Immune Response occurs at first contact with the pathogen. The body takes several days to build up a sufficient amount of antibodies . There is a three-pronged attack in response to primary expos...
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Answered by Daisy G. • Biology tutor
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What are the key steps in the light dependent reaction of photosynthesis?

Light energy from the Sun excites electrons in chlorophyll and the excited electrons are emitted.2. The chlorophyll molecule is now positively charged and chemically less stable. The lost electrons get repla...
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Answered by Aditi A. • Biology tutor
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