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This is a really common problem of knowing all the knowledge behind the question but still not getting the most marks you can. The best way to manage this is to simply learn the mark scheme; the questions...

A synapse is a gap between two separate neurons. When the electrical impulse from the first neuron reaches the nerve terminal of the first neuron, chemical messengers c...

Skin, mucosal lining, stomach acid

READ the question - Anaerobic respiration in both 3 marks = give 3 differences/similaritiesyeast produces ethanol but muscles produce lactic acid (difference 1)yeast produces CO2 but muscles do not (MUST ...

Homeostasis describes the maintenance of the body’s internal environment. Glucose homeostasis is specifically referring to the control of the levels of sugar in the blood.
The pancreas is an organ, ...