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How are proteins synthesised?

Proteins are coded for by genes (a sequence of DNA that codes for a specific polypeptide), in the nucleus the DNA is unwound by an enzyme and then another enzyme with copy the template strand to make a molec...
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Answered by Billy R. • Biology tutor
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Why do insulin levels rise in the body following a meal, and what effects does the insulin have?

a) Why do insulin levels rise? After we have eaten, the carbohydrates in the food are broken down to glucose, which is absorbed in our intestines. This means that the level of glucose in our blood rises afte...
TD
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Can you explain to me what the Golgi apparatus does?

Golgi ApparatusInvolved in protein and lipid modification by addition of sugar groups Involved in sorting and packaging of proteins and lipidsInvolved in vesicular transport, which is moving substances which...
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Answered by Chiranth B. • Biology tutor
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Explain how two populations of organisms may develop into two separate species.

The first thing to identify here is that this is a question about evolution. Students should look to give a comprehensive explanation of how organisms evolve via natural selection, while framing the answer w...
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Answered by Will S. • Biology tutor
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Describe the stages of the europhication process (6 marks)

Farmers use nitrate containing fertilisers on their crops which are leached into river water due to rains and water run off, causing a build up of nitrates in pools of water. This increases the ion concentra...
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Answered by Melissa D. • Biology tutor
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