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What does ADH do in the Kidney?

ADH or Anti Diuretic Hormone is a hormone that regulates the amount of water absorbed in the kidney. It acts on the collecting duct of the kidney, which is the last part of the nephron (a single functional u...
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Answered by Julia H. • Biology tutor
7635 Views

What is mitosis?

Mitosis is the process of cells dividing to form two identical daughter cells. It consists of five stages: interphase, prophase, metaphase, anaphase and telophase. Interphase is the stage during which the ce...
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Answered by Chloe H. • Biology tutor
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Why are nitrogen and phosphorus vital in photosynthesising plants

Phosphorus is a vital building block and is used in the compound ATP, it is also a vital component within nucleotide and protein synthesis with the sugar phosphate backbone found in DNA and RNA being compose...
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Answered by Rory H. • Biology tutor
4105 Views

Describe what happens in glycolysis.

Glycolysis takes place in the cytoplasm and comprises two stages: phosphorylation and oxidation. In phosphorylation, glucose is phosphorylated using two molecules of ATP to form glucose phosphate and then he...
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Answered by Skye L. • Biology tutor
11186 Views

If a gene mutation is associated with the development of Alzheimer's Disease (e.g. E280A), how might a high frequency develop in a population and why wouldn't natural selection decrease it?

A high frequency of mutation can be produced by having a small population, leading to high levels of inbreeding. When there is little interbreeding with different populations, the genetic diversity will rema...
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Answered by Caitlin R. • Biology tutor
2940 Views