Amino acids and glycerol are absorbed into the blood. Which correctly gives a use of each of them in the body's cells?
Amino acids release energy, and glycerol helps to build new cell membranes.
Amino acids build new proteins, and glycerol helps to build new membranes.
Amino acids release energy, and glycerol is broken down to release energy.
Amino acids build new proteins, and glycerol is broken down to release energy.
179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.