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Biology
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How are blood glucose levels regulated in humans?

Blood glucose homeostasis involves maintaining the levels of blood glucose within a very narrow limit around a set point (90mg 100cm-3). This is done via hormonal regulation. On one hand, insulin which is...

CM
Answered by Christie M. Biology tutor
4996 Views

What is chromatin?

The length of a strand of human DNA is much longer than you’d think! In fact if it was laid out in a straight line it would be several metres in length. The size of a nucleus is approximately 6 micrometer...

JH
Answered by Jake H. Biology tutor
12708 Views

What are the differences between the nervous and endocrine systems in maintaining homeostasis?

The nervous system and endocrine system work together to maintain a state of constancy in the body's internal environment despite changes in the external environment. The effect of both systems is ach...

DS
Answered by Danielle S. Biology tutor
28643 Views

What are the key differences between plant and animal cells?

There are several important differences betwe...

JC
Answered by Jake C. Biology tutor
7637 Views

Why is ATP used as an energy store in cells?

ATP is an unstable molecule therefore it releases the energy stored readily and quickly, this is essential for metabolic processes in the cell such as active transport and protein synhesis. As well as...

JS
Answered by Joscelin S. Biology tutor
22460 Views

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