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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 h...
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 temperatu...
-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 mov...
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...
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, mitoc...
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