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What happens in the link reaction of respiration?

Pyruvate converts to Acetylcoenzyme A in an oxidation reaction. Pyruvate and coenzyme A combine to form acetylcoenzyme A. One of pyruvate's 3 carbon atoms goes to form a molecule of carbon dioxide, which ...

Answered by Megan B. Biology tutor
5055 Views

How do I approach the 8-10 mark questions on a paper?

Firstly, don't panic! These questions are always either a description of a process (so you can learn it off by heart), or an analysis of information that is given to you. Although it's not advisable to wr...

Answered by Lydia C. Biology tutor
9842 Views

Please could you explain Oxidative Phosphorylation?

I like to approach this in 6 steps, but you could also draw this as a diagram if you find that more helpful. All the words in capital letters are needed to get the credit in an exam: 1)NADH and FADH are R...

Answered by Lydia C. Biology tutor
2911 Views

What is the difference between B-cells and T-cells in the immune system?

B-cells and T-cells are both able to react to specific pathogens, but do this in different ways. B-cells produce antibodies that can bind to the pathogen. T-cells have a few functions: they can kill host ...

Answered by Kelsey M. Biology tutor
6560 Views

How does natural selection lead to evolution?

Evolution describes the divergence of species by natural selection. It is best to think of this at the level of the gene pool. The gene pool is all the genes contained within a population. The gene pool i...

Answered by Michelle M. Biology tutor
27183 Views

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