Discuss how humans could use selective breeding of either monarch butterflies or milkweed plants to prevent the extinction of
monarch butterflies.

In the human body fibrinogen is necessary for sealing cuts and stopping the loss of blood. since fibrinogen is made of chains of amino acids it is an example of which type of organic molecule

Explain why phospholipid molecules form a bilayer. (3 marks)

How can you approximate the number of calories required to keep you in energy balance?