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Discuss the role of the cell membrane in cellular function.

The cell membrane, or phospholipid bilayer, encompasses the contents of a cell and allows for organelles to be contained within the cytoplasm. The cell membrane is semi-permeable, thus is allows the movement...
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Answered by Ana R. • Biology tutor
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Describe and explain how blood glucose levels are controlled following a meal.

Following a meal, the levels of glucose in the blood will increase. This increase in the level of glucose needs to be controlled, otherwise the levels of glucose will become too high and someone could end up...
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Answered by Dr Usama A. • Biology tutor
3485 Views

Explain why the rate of reaction slows down above the enzyme's optimum temperature.

Chemical reactions occur faster at higher temperatures since at higher temperatures the enzyme is more likely to bump into the substrate more often and with a higher energy than at a lower temperature. The t...
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Answered by Yasmin I. • Biology tutor
23122 Views

Explain why blood transfusion from a recently recovered Ebola patient may be an effective treatment ? (3 marks)

Importantly the question has 3 marks which means 3 clearly developed points must be made: The question wants us to think about ebola and its method of infection, the individual who has been infected and reco...
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Answered by Ahmed E. • Biology tutor
5138 Views

Describe the similarities and differences between the processes of osmosis and diffusion

Similarities:Both processes are passive (do not require energy)In both processes molecules move from an area of high concentration to low concentration and therefore down a concentration gradient.Differences...
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Answered by Grace H. • Biology tutor
8560 Views