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What is an enzyme and explain the factors affecting it.

Enzymes are proteins. They are biological catalysts, meaning they increase the rate of reaction without being used up or changed. Different enzymes have different optimum temperatures and pHs, depending on t...
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Answered by Yusir M. • Biology tutor
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What are the non-specific defence systems of the human body that protect it from pathogens?

A 'non-specific' defence system means that its response is the same for every invader (pathogen). In the human body this includes: Skin - a physical barrier between the outside world and the inside of the bo...
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Answered by Alice H. • Biology tutor
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Compare and contrast three ways in which sperm cells and egg cells are specialised for their functions

Both sperm cells and egg cells contain a haploid nucleus, this means that they contain half the number of chromosomes of a normal diploid cell. This is so that when the egg is fertilised by the sperm there a...
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Answered by Aoife C. • Biology tutor
33569 Views

Name three common components of blood; as well as how they are removed from the plasma

Waste (e.g. carbon dioxide) Carbon dioxide is a waste product of respiration, which ends up dissolving in the blood plasma. This can cause the blood pH to decrease, which will ultimately cause a lot of probl...
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Answered by Sara T. • Biology tutor
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How do enzymes react under different temperatures?

A graph would be drawn to show a steady incline to an optimum temperature and then a sharp decrease after the peak. As the temperature increases the enzyme and sustrate will have more kinetic energy and so e...
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Answered by Georgia E. • Biology tutor
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