Which statement describes a function of water in the human body?
AIt acts as a solvent, so that digested food, salts and wastes can be carried in the blood.
BIt is joined into long chains in the cells to build the body's structural proteins.
CIt supplies the body with energy, releasing about 17 kJ for every gram taken in.
DIt is broken down in the liver to make the antibodies that fight infection.
Explanation
Most substances the body moves about are carried dissolved in water: plasma is about 90 per cent water and carries glucose, salts, hormones, urea and dissolved gases. Water itself provides no energy, and it is not a raw material for making proteins or antibodies.
Derived from ZIMSEC Combined Science 4003/2, June 2025, Q1(a)