Top answers

What is an enzyme?

An enzyme is a type of protein that catalyses reactions that occur in the body. In many cases they are essential in order to allow reactions to occur under physiological conditions. There are many different ...
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Answered by Rohin A. • Biology tutor
4988 Views

Briefly describe the components of blood and their functions.

55% of blood is made up of plasma. This liquid component holds the other component of blood, cells, in suspension and thus is vitally important to their transport. Plasma is also important in transporting no...
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Answered by Benjamin G. • Biology tutor
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Are diffusion and osmosis the same thing?

Diffusion is defined as the movement of a substance from a high concentration to a low concentration, meaning they move from where there are lots of them to where there are fewer. Diffusion of these molecule...
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Answered by Eleanor B. • Biology tutor
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I've tried to learn all my notes, but what is the best way to prepare for the exam?

It's fantastic if you manage to learn all your notes before the exam, but knowledge isn't everything. It's also about how you apply the knowledge. I would recommend getting to grips with the syllabus, and pa...
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Answered by Nicholas T. • Biology tutor
4184 Views

What is mitosis?

When a cell replicates to produce 2 identical copies of the origional cell
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Answered by Gavin M. • Biology tutor
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