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How is blood glucose controlled in homeostasis?

Blood glucose concentration is controlled mainly by the pancreas. If there is a rise in blood glucose concentration the pancreas will detect this and the beta cells will secrete insulin. At the same time the...
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Answered by Anushri P. • Biology tutor
3908 Views

What happens during mitosis?

Mitosis consists of four stages: prophase, metaphase, anaphase and telophase. During prophase, the chromosomes that have already been replciated during interphase become condensed, making them visible under ...
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Answered by Valentina G. • Biology tutor
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How does the kidney produce concentrated urine?

There are various mechanisms by which the kidney produces concentrated urine. The most important of these are the loop of Henle and the role of ADH, anti-diuretic hormone. Let's examine each of these in turn...
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Answered by Amy H. • Biology tutor
26027 Views

How does vaccination provide immunity?

Pathogens are microorganisms that can cause disease. If they enter the body, they can start an immune response. On their surface, they have antigens, which are substances that start that immune response. Ant...
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Answered by Lana F. • Biology tutor
3256 Views

How is information passed across a synapse?

A synapse is a junction between neurons. For neurons to communicate signals to each other, it is vital that information can cross the synapse when appropriate. The neuron before the synapse (the presynaptic ...
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Answered by Alex T. • Biology tutor
20051 Views