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Describe the differences and similarities between diffusion and osmosis.

Diffusion and osmosis both describe the net movement of molecules down a concentration gradient, resulting in an even spread of the molecule over an area over time. Osmosis, however, is more specific as it r...
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Answered by Patrick S. • Biology tutor
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Explain how the human body might protect itself from microorganisms.

There are two different types of microorganism - bacteria and viruses. The human body is covered in bacteria, the majority of which is good bacteria and they won't cause any harm. The rest are pathogens whic...
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Answered by Petya I. • Biology tutor
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Explain and contrast the differences between plant and animal cells.

Taken from AQA specification learning outcome 4.1.1.2Students should be able to explain how the main sub-cellular structures, including the nucleus, cell membranes, mitochondria, chloroplasts in plant cells ...
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Answered by Gabby K. • Biology tutor
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Do prokaryotes have a nucleus.

No prokaryote cells like bacteria contain their genetic material in a nucleiod in the cytoplasm.
MS
Answered by Matthew S. • Biology tutor
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What is the difference between competitive and non-competitive inhibition

Competitive inhibition is when a molecule binds to an active site of an enzyme and thus prevents the substrate binding. It is usually reversible but can sometimes be irreversible.Non-competitive inhibition o...
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