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What is the role and structure of enzymes in the human body?

The role of enzymes are to act as a catalyst to speed up the rate of chemical reactions within the human body. They do this by binding to a molecule or substrate and breaking it up or by combining two molecu...
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Answered by Clement H. • Biology tutor
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How do I recognise the different phases of mitosis by simply looking at an image (e.g. electron micrograph)?

When coming across a question like that, I would recommend to always first recall the different stages of mitosis in their correct order, and to remember each phase along with a key-word that sums it up. For...
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Explain the structures and steps involved in the coordination of the reflex action. (6 marks)

To score full marks in this question the student should provide:'Scientifically relevant facts, events or processes are identified and given in detail to form an accurate account.' (Level 2: 4-6 marks)The st...
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Answered by Nelima H. • Biology tutor
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How does the body respond to increased body temperature in order to maintain homeostasis and why is this an important mechanism ?

The body responds in three ways: by the blood vessels in our skin dilating (vasodilation) so heat is brought the surface and can be lost by radiation, by sweat glands secreting sweat loosing heat that is tra...
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Answered by Ailsa F. • Biology tutor
2601 Views

Where does photosynthesis take place?

It occurs in plant cells, in the chloroplasts, found in the mesophyll layer. Chloroplasts contain chlorophyll necessary to absorb light.
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Answered by Lorenzo R. • Biology tutor
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