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How does filteration occur in the kidney?

Inside the kidneys there are millions of nephrons which filter the blood. They do this by having blood build up a high pressure in the glomerulus (a ball of capillaries) so that the small molecules (e.g. wat...
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Answered by Vedika A. • Biology tutor
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explain the circulation of blood pumped by the heart

Your heart pumps blood from its left side, through the aorta (the main artery leaving the heart) and into the arteries. The blood travels through your arteries, which divide off into smaller and smaller bran...
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Answered by Vedika A. • Biology tutor
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Describe how living things are involved in the constant cycling of carbon.

plants uses carbon dioxide during photosynthesis. plants use carbon to make carbohydrates and cellulose. animals then eat plants and carbon is passed down. Animals then respire and release carbon dioxide int...
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Answered by Vedika A. • Biology tutor
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Explain the differences between meiosis and mitosis

Mitosis: Will produce 2 daughter cells that are genetically IDENTICAL. Used for growth and repair. Meiosis: Produces 4 daughter cells from a parent cell and they will all be genetically unique. Will produce ...
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Answered by Martin R. • Biology tutor
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What are competitive and non-competitve inhibitors?

Inhibitors INHIBIT the ACTIVITY OF ENZYMES. This means fewer enzymes are able to break up substrate, and so whatever reaction is taking place, slows down. Inhibitors can be found for example, in poison or in...
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Answered by Anna H. • Biology tutor
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