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Biology
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Define active transport.

Active transport uses energy in the form of ATP hydrolysis to move a molecule against its concentration gradient.

JA
2230 Views

What happens to the filtrate in the loop of Henle?

The point of the loop of Henle is to reduce the quantity of water in the filtrate and so reduce water loss. The loop is split into three key areas: The descending limb, the thin ascending limb and the thi...

SM
Answered by Sam M. Biology tutor
40516 Views

What are the enzymes involved in the process of DNA replication?

DNA Helicase - unwinds and unzips the DNA double helix by breaking the hydrogen bonds DNA Gyrase - this helps to stabilise the single strands Single-Strand Bindin...

DG
Answered by Dominic G. Biology tutor
10923 Views

Which organelle is expected to be found in above-average quantities in cardiac tissue and what is the purpose of this organelle?

Cardiac tissues such as those present in the heart have a high energy requirement as they must contract strongly to facilitate the transportation of blood around the body. This requires a high level of en...

HC
Answered by Harry C. Biology tutor
3066 Views

What is genetic diversity?

Genetic diversity is a measure of the number of alleles (The amount of genetic variety) in a given population.

SM
Answered by Sam M. Biology tutor
3101 Views

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