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Explain why someone who has a high blood pressure is at a significantly higher risk of developing CVD

The endothelium lining the arteries will become damaged due to the high blood pressure. There will be an inflammatory response increasing the chance of an atheroma forming. This will increase the chance o...

Answered by Hannah S. Biology tutor
3752 Views

How exactly can new species evolve from within a population, and how can we classify them as such?

There are two main mechanisms that contribute towards the process of speciation: natural selection, and genetic drift. The result of both of these mechanisms is phenotypic and genetic change as a populati...

Answered by Biology tutor
1930 Views

Describe how pancreatic hormones regulate blood glucose homeostasis.

In response to high blood glucose concentrations, insulin is released from the pancreas into the blood. Insulin acts on cells (especially liver cells) and causes glucose to move from the blood into these ...

Answered by Hannah B. Biology tutor
1433 Views

How can temperature affect an enzymes activity?

An enzyme is a biological catalyst. As temperature is raised, the rate of the reaction increases up to the optimum temperature, the point at which the enzyme works the best. Beyond this, raising the tempe...

Answered by Mahnoor S. Biology tutor
1373 Views

A large amount of sewage enters a river and many of the fish die. Sewage contains bacteria and organic material. Explain why the fish died.

Bacteria in the water decay organic matter in sewage -> respire aerobically -> uses the O2 in the water and reduces O2 concentration -> fish have less O2 to aerobically respirate -> fish die

Answered by Christopher H. Biology tutor
2060 Views

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