Top answers

Biology
A Level

What happens during prophase?

The chromosomes condense and become visible

AS
Answered by Adam S. • Biology tutor
7098 Views

What is meant by the term polygenic inheritance? [2 marks]

This term refers to the idea that a single characteristic is encoded for my multiple genes at different loci. This gives rise to continuous

OF
Answered by Odette F. • Biology tutor
7916 Views

What is a reflex arc and how does it work?

A reflex is an unconcious response to a potentially harmful stimulus, such as pulling a tray out of the oven without oven gloves on!

Reflexes bypass the brain an...

PC
Answered by Polly C. • Biology tutor
8411 Views

How does the citric acid cycle work, and what is oxidative phosphorylation?

The citric acid cycle (AKA the TCA cycle, AKA the Krebs cycle) is an incredibly important set of chemical reactions which is at the centre of how all aerobic organisms function. It is ...

FH
Answered by Frederick H. • Biology tutor
5328 Views

What is a randomised controlled trial?

Randomised controlled trials are the most important way that new medical therapies (drugs, devices, procedures and so on) are tested.

‘Controlled’ means that volunteers i...

FH
Answered by Frederick H. • Biology tutor
4783 Views

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