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Describe the various functions of proteins in our body.

Enzymes : Enzymes are biological catalysts, meaning they speed up the rate of the reaction without being used up. An example of an enzyme is amylase, which is produced by the salivary glands and is involved ...
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Answered by Ayesha A. • Biology tutor
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What is the role of white blood cells in the immune system?

White blood cells can have different roles and are important for protecting the body against pathogens. They can inges t a pathogen and destroy it, some produce antitoxins which destroy the toxins produced b...
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Answered by Anna W. • Biology tutor
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Symptoms of Salmonella include vomiting and diarrhoea, and it is known this is caused by a bacterium. What does the bacterium do to cause such symptoms?

Bacteria release toxins to poison and damage cells, leading to symptoms like vomiting and diarrhoea.
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Answered by Ishan J. • Biology tutor
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Why will a plant wilt if it is not watered?

When a plant is watered, water moves into the plant by osmosis (the diffusion of water), this means that water moves into the cells causing them to become turgid. When the plant is not being watered, water m...
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Answered by Isabelle H. • Biology tutor
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Explain the meaning of the terms (a) gene and (b) allele

Gene = the portion of DNA coding for a particular proteinAllele = one of the alternative forms of a gene
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Answered by Charlotte F. • Biology tutor
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