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Describe transcription and translation.

Transcription is the making mRNA from DNA. Translation is using the mRNA to code for a protein.
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Answered by Clemmie B. • Biology tutor
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What is a synapse and how does it work?

A synapse is a small gap between neurones (nerve cells). Information is passed along the neurone as an electrical impulse, but to get from one neurone to the next, the information is converted into a chemica...
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Answered by Rhiannon L. • Biology tutor
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Define the term osmosis.

Osmosis is the net movement of water molecules from an area of high water potential to low water potential, commonly across a partially permeable membrane such as a cell's surface membrane.
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Answered by Joshua D. • Biology tutor
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Explain how the human body maintains blood glucose levels within a narrow range

As part of homeostasis, it is vital for the human body to maintain blood glucose levels within a narrow range. The 2 main hormones involved are insulin, when glucose levels are too high, and glucagon, when g...
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Answered by Sally H. • Biology tutor
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The MMR vaccine is given to children in order to prevent the conditions measles, mumps and rubella. Describe how a vaccine works?

Vaccines contain dead or inactive forms of a pathogen. - These dead or inactive forms stimulate the white blood cells to produce antibodies against the pathogen. - If a person is infected by the pathogen in ...
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Answered by Victoria H. • Biology tutor
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