Top answers

Biology
A Level

What is the difference between a prokaryotic and eukaryotic cell?

There are several key differences between prokaryotic and eukaryotic cells. Eukaryotic cells are found in multicellular plants and animals, whereas prokaryotic cells are found in bacteria and archaea whic...

CM
Answered by Charlotte M. Biology tutor
22006 Views

Briefly describe the environmental effects of nitrogen fertilisers in a body of water

The nitrogen fertiliser would leach into the water. This would cause algae to grow exponentially on the surface of the water, therefore would reduce the amount of...

HB
Answered by Holly B. Biology tutor
2899 Views

How are coenzymes used in the process of aerobic respiration?

Coenzymes contrary to their name aren't enzymes but are synthesised from vitamins. Their overall purpose is to bind to the active site of a specific enzyme to aid the binding of the complemenatry substrat...

SP
Answered by Sophie P. Biology tutor
19827 Views

State the difference between Apoplastic and symplastic pathways of water movement in plants

•Apoplastic- in cell wall and water moves by cohesion.

•Symplastic- in cytoplasm and water moves by osmosis.

EB
Answered by Ethan B. Biology tutor
8254 Views

Describe the roles of calcium ions and ATP in the contraction of a myofibril (5 marks)

Calcium ions, which diffuse in from the sarcoplasmic reticulum, cause tropomyosin to shift which reveals the myosin binding site located on the actin filament allowing the myosin head to bind. A molecule ...

MY
Answered by Molly Y. Biology tutor
11407 Views

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