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Describe and explain the structure of the human heart.

The human heart has four chambers, the right atrium, the right ventricle, the left atrium and the left ventricle. The right and left sides are completely seperated by the septum, this is so that the oxgenate...
MR
Answered by Megan R. • Biology tutor
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Describe one example of plant or animal adapted to their environment in order to increase their chances of survival

Marram grass is an example of a plant adapted to its environment, as it lives on sand dunes where the environment is harsh. The sand its roots are in means water will drain away and its closeness to the sea ...
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Answered by Katie D. • Biology tutor
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How is glucose absorbed by the body?

Glucose is a product of carbohydrate digestion, the absorption of which into the blood stream involves two main stages: 1) Diffusion into the blood: When carbohydrates are first broken down, there's a higher...
TD
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What hormones are involved in a pregnancy test and how does it work ? (6 marks)

After the human embryo implants in the uterus, the site of the developing placenta begins to produce a chemical called human chorionic gonadotrophin (hCG). hCG is a hormone that is found in the blood and uri...
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Answered by Ellie B. • Biology tutor
18958 Views

Why would a cell lyse when it's in water?

Lysis, or the bursting of a cell, happens because of a cell swelling excessively causing it to burst, due to the movement of water into the cell by osmosis. However, this isn't the case for all cells! Osmosi...
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Answered by Ashar A. • Biology tutor
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