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Biology
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I know most content but I keep getting questions wrong what should I do?

WIth Biology it is very important that you use specific words and many marks schemes require you to say a specific word such as monomer/ hydrolysis/ allele in order to get the mark. I found that when I wo...

Answered by Morenike T. Biology tutor
2774 Views

Describe how non-specific human defence systems stop you from falling ill. [6 marks]

your skin covers almost all parts of your body to prevent infection from pathogens, your nose has hairs within them which act as a physical barrier to infection, mucus is produced by goblet cells in your ...

Answered by Elicia C. Biology tutor
6322 Views

What is the most important function of mitochondria?

To produce ATP via the process of aerobic respiration, which can then be used as fuel for other cellular processes.

Answered by Laura M. Biology tutor
1887 Views

What is the action of insulin?

Insulin is the hormone that controls how glucose gets into your cells to give them energy after you eat. If you think of your cells having a lock on them and insulin is the key. Once your food is digested...

Answered by Sophie B. Biology tutor
2234 Views

Explain how a leaky heart valve can cause health issues

A leaky heart valve is called valve regurgitation and is caused by the valves not completely closing. Any valve in the heart can have a regurgitation whether that is the aortic, mitral, pulmonary or the t...

Answered by Vishnu S. Biology tutor
12635 Views

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