Sample Answers

A Level Biology Sample Questions + Answers

Bacteria in Nitrogen Production

Carbon Dioxide Concentration

Changes in Aortic Wall during Cardiac Cycle

Diet Heart Failure

DNA Replication

Energy Transfer

Leaf Gas Exchange

Myocardial infarction

Oxygen Transport

Pulmonary Tuberculosis in the Lungs

Small Intestine

Water Absorption in Gut

Water transport in roots