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Biology
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Compare and contrast three ways in which sperm cells and egg cells are specialised for their functions

Both sperm cells and egg cells contain a haploid nucleus, this means that they contain half the number of chromosomes of a normal diploid cell. This is so that when the egg is fertilised by the sperm ther...

AC
Answered by Aoife C. Biology tutor
31427 Views

Describe the process of an action potential travelling across a synapse

An action potenial reaches the synaptic bouton causing depolarisation which opens calcium voltage gated channels. Calcium moves into the cell and causes the movement of vesicles containing acetylcholine t...

EW
Answered by Ed W. Biology tutor
2959 Views

Compare DNA and RNA

Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) both encode genetic information; however, there are many fundamental differences.

Firstly, the sugar backbone for RNA is ribose, while for DNA...

ST
Answered by Sara T. Biology tutor
5073 Views

Name three common components of blood; as well as how they are removed from the plasma

  1. Waste (e.g. carbon dioxide)

Carbon dioxide is a waste product of respiration, which ends up dissolving in the blood plasma. This can cause the blood pH to decrease, which will ultimate...

ST
Answered by Sara T. Biology tutor
3055 Views

How do enzymes react under different temperatures?

A graph would be drawn to show a steady incline to an optimum temperature and then a sharp decrease after the peak.

As the temperature increases the enzyme and sustrate will have more kinetic energ...

GE
Answered by Georgia E. Biology tutor
3061 Views

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