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Biology
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How do phospholipids form membranes?

Phospholipids are a major component of cell membranes. They are ideal components of membranes due to their structure. They consist of a glycerol and phosphate 'head' attached to t...

LE
Answered by Lauren E. • Biology tutor
14006 Views

What is the role of insulin in the body?

Insulin is a hormone released by the pancreas in response to high glucose levels in the blood. It primarily acts to reduce blood glucose levels. It does this by signalling muscle and fat cells to take in ...

SB
Answered by Sophie B. • Biology tutor
5240 Views

How does increasing temperature affect the rate of a reaction in the presence of an enzyme.

Initially increasing temperature will increase the rate of reaction. This is because the substrate molecules have greater kinetic energy so there are more frequent collisions with the enzyme/other molecul...

CR
Answered by Cameron R. • Biology tutor
2297 Views

Describe the cardiac cycle, including the role that valves and pressure differences play in this process.

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