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Doctors are now prescribing fewer antibiotics to reduce the evolution of antibiotic resistant bacteria. Describe the process of evolution of antibiotic bacteria. [6 marks]

There is variation in a population. Some bacteria are have resistance, others do not.Bacteria with advantegeous characteristics are more likely to survive and reproduce (when antibiotics is used in the host ...
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Answered by Kitty P. • Biology tutor
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Amylase is the enzyme that controls the breakdown of starch to glucose. Describe how the student could investigate the effect of pH on the breakdown of starch by amylase.

Breakdown answer into 5 simple marks that can be easily understood and remembered:Control variable - Keep amount of amylase and starch the sameDependent Variables - change PH levels 3 times Keep temperature ...
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Answered by Kitty P. • Biology tutor
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Describe 2 ways in which the body prevents entry of microorganisms into the body

-acid in the stomach kills any pathogens-skin acts as a physical barrier to pathogens-hair in the nose and ears trap any pathogens -saliva & mucous trap pathogens. The bronchi have villi that help move p...
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Answered by Sara H. • Biology tutor
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What is a monoclonal antibody?

An antibody is a specific protein produced in response to an antigen.A monoclonal antibody is an antibody that has been produced from one specific type of white blood cell. Every antibody produced by this wh...
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Answered by Danial B. • Biology tutor
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What's the difference between an animal cell and a plant cell?

A cell is a basic unit of life. An organelle is a structure inside a cell with a special function. Most animal cells have the following parts: a nucleus, cytoplasm, a cell membrane, mitochondria and ribosome...
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Answered by Iman S. • Biology tutor
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