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Cells divide within organisms using a process called mitosis. When sex cells (gametes) are formed, they undergo a different process called meiosis. Describe three key differences between the two processes. (3)

The key differences between mitosis and meiosis are:-Mitosis produces 2 daughter cells, where as meiosis produces 4 daughter cells. (1)-Mitosis produces genetically identical cells, where as meiosis produces...
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Answered by Hannah B. • Biology tutor
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Explain how an adult develops immunity to the toxin.

Adults can develop immunity to a toxin via being exposed to the toxin, whether this is by infection or vaccination. Since this toxin will be recognised as foreign by the body, this will stimulate an immune r...
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Answered by Sereena S. • Biology tutor
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Explain how blood vessels help to regulate a human's body temperature (3marks)

The blood vessels dilate and widen, which means that the blood flows closer to the surface of the skin, so more heat is able to be released, which cools the overall body temperature.
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Answered by Bill C. • Biology tutor
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Describe the process of the light-independent reaction.

Carbon dioxide diffuses into the cell leaf through the stomata, and diffuses into the water surrounding the mesophyll cell walls (main site of photosynthesis-packed with many chloroplasts). From here, the ca...
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Answered by Davinia I. • Biology tutor
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What is homeostasis and give 3 examples of homeostasis in the body.

Homeostasis is the maintaining of a constant internal environment to allow for healthy functioning of the body. Three examples would be the control of water levels in the kidney via ADH, control of temperatu...
Answered by • Biology tutor
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