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Why does temperature affect rate of reaction?

Increase temperature means molecules have increased kinetic energy and so move around more . Increasing the frequency and power of collisions leading to more enzyme substrate complexes forming and increasing...
HA
Answered by Haider A. • Biology tutor
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What does the mitochondria do?

It is the powerhouse of the cell. produces energy (ATP) from respiration for the body to use.
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Answered by Robert H. • Biology tutor
3707 Views

Name and describe the 4 stages within mitosis? [12 marks]

Prophase [1 mark] nuclear membrane breaks down [1 mark] chromosomes condense [1 mark] Metaphase [ 1 mark] chromosomes are lined up [ 1 mark] along the cell's equator [1 mark]Anaphase [1 mark] one set of chro...
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Answered by Ismay R. • Biology tutor
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How are nutrients absorbed into the circulatory system in the small intestine?

Firstly I would ensure the student understands the basic concepts of diffusion and what nutrients are. I would describe how food substances move through the digestive system and break down into amino acids, ...
PC
Answered by Pippa C. • Biology tutor
3603 Views

Explain how carbon is cycled in the environment, including the role of all living organisms and the use of fossil fuels.

This question was taken from a recent past paper.Let's start by working out what the examiner is looking for here. This question makes it quite obvious, as it states the words 'carbon' and 'cycle', telling y...
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Answered by Adele P. • Biology tutor
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