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Osmoregulation is the process by which the body regulates the volume of water in the body. Define homeostasis and describe where osmoreceptors are located. Explain how osmoreceptors work and describe the key osmoregulation hormone and its target organ.

Osmoreceptors are located in the brain, within they posterior pituitary of the hypothalamus.Osmoreceptors shrink in response to reduced water in the blood due to movement of water from the osmoreceptor into ...
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Answered by Joely K. • Biology tutor
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What are the key stages in phagocytosis?

First, the phagocyte (a specialised type of white blood cell) will recognise the pathogen by a process called chemoattraction -- this is essentially where the phagocyte 'follows' a chemical trail left by the...
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Why would a deletion mutation in the DNA base sequence lead to the production of a non-functional enzyme?

Because the deletion mutation would cause a frame shift in the DNA base sequence and hence would lead to the formation of new base triplets. As a result, the primary structure of the enzyme would be differen...
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Answered by Aoife M. • Biology tutor
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Identify the ideal properties a surface should have for efficient gas exchange

In order for efficient gas exchange to take place, an exchange surface, such as the alveoli in the lungs, should have the following: a large surface area to volume ratio, so that diffusion can occur at a qui...
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How does the process of eutrophication work?

As we know, fertilisers are used by farmers to increase crop yield, and artificial fertilisers in particular are very high in nutrients such as phosphorus and nitrogen which stimulate plant growth. However, ...
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Answered by Daisy H. • Biology tutor
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