Biology Topic Practice

Proteins and Metabolism

A significant part of metabolism is the constant building and breaking down of proteins.

What happens to excess proteins in the body?

What is Proteins and Metabolism?

"Protein metabolism refers to the various biochemical processes responsible for the synthesis of proteins and amino acids, and the breakdown of proteins by catabolism."

Question 1

Which statement accurately describes protein synthesis metabolism at a GCSE level?

Question 2

What happens when excess proteins are broken down in metabolism?

Question 3

In GCSE Biology, what happens when excess proteins are broken down in metabolism?

Question 4

Select what happens when excess proteins are broken down in metabolism?

Protein Turnover

Amino acids are built into proteins for growth and repair.

Excess amino acids cannot be stored and are broken down in the liver.

This process produces urea, which is excreted by the kidneys.

Exam Tip

Deamination is the process of removing the amino group from an amino acid in the liver.

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