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Biology
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Describe how the lungs are adapted for gas exchange (6 marks)

-There are a large number of alveoli, increasing the surface area available for gas exchange. The alveoli have many infoldings, further increasing the

Answered by Anna A. Biology tutor
29868 Views

Describe and explain how temperature affects the rate of an enzyme-controlled reaction?

Up to the optimum temperature (around 37 degrees Celsius) kinetic energy increases. So the likelihood of successful collisions between the active site of the enzyme and substrate increases. More e...

Answered by Enya F. Biology tutor
4262 Views

Outline the process of ATP generation by chemiosmosis.

This is a process that occurs on the membrane of the mitochondria. Here the electrons are passed from one electron carrier to the next in a chain know as the electron transport chain. With each carrier be...

Answered by Anushri J. Biology tutor
3149 Views

Can you explain the four levels of protein folding?

Proteins form from basic structures and fold into larger, more complex ones. They start as simple chains of amino acids, this is known as the primary structure of a protein. They then fold into secondary ...

Answered by Caitlin C. Biology tutor
2074 Views

Compare and contrast animal and plant cells, giving 3 similarities and 3 differences. Answer can be given as an annotated diagram.

Similarities:Have a cell membraneHave a nucleusHave mitochondriaDifferences:Plant cell has a cell wallPlant cell has one big vacuolePlant cells have chloroplasts - those in the leaves

Answered by Kipras U. Biology tutor
1260 Views

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