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Biology
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Describe the factors which affect rate of reaction.

Temperature can affect rate of reaction. As temperature increases, rate of reaction also increases, because enzymes have more kinetic energy. This continues up to the optimum temperature (for enzymes in h...

AM
Answered by Annalise M. Biology tutor
3449 Views

Discuss the evolutionary order of appearance of the mitochondrion, chloroplast and ribosome, explaining your reasoning

By considering which organisms have each of the referred organelles, we can infer their evolutionary order of appearance.Ribosomes are present in every living cells, whereas mitochondria and chloroplasts ...

MP
Answered by Maria P. Biology tutor
4445 Views

Please compare and contrast the structure of human blood vessels.

There are three blood vessel types in humans: arteries, veins and capillaries.Arteries pump blood away from the heart (easy point to remember - "A" in arteries = AWAY from the heart) while veins...

HR
Answered by Hansika R. Biology tutor
5040 Views

Describe the steps of mitosis. (10 Marks)

One mark is given for correctly naming each step (of which there are 7 possibilities). Another is given for a correct description of each stage.Prophase: Chromatin condenses to chromosomes / nucleolus dis...

MG
Answered by Michael G. Biology tutor
3585 Views

How does temperature effect enzymes?

Under 0 degree celcius, ice crystals will begin to form in the cell membrane of the enzyme. If the temperature increases and the enzyme thaws, the pierced cell membrane will cause leakage and prevent the ...

EH
Answered by Erin H. Biology tutor
2879 Views

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