Sec 2 Science Transport Systems topical questions

State the jobs of arteries and veins.

State what xylem and phloem transport.

Define diffusion.

Name the blood vessels where substances are exchanged with cells.

State why a human needs a transport system.

Explain how oxygen reaches a muscle cell from the blood.

Explain how water can enter a root by osmosis and then reach a leaf.

A leaf makes sugar. Explain how a root can receive that sugar.

Compare transport in a human and in a plant, naming one tissue or vessel in each.

State one benefit of a medicine and one harm of misusing a drug.

State the role of plasma, red blood cells and platelets in transport or repair.

Predict what happens to leaf cells if xylem in the stem is blocked, and what happens if phloem is blocked instead.

Explain why a one-celled pond organism can survive without blood, using diffusion.

A heart transplant is medically possible. Give two ethical questions and state why they are not answered by the surgical method.

Oxygen, carbon dioxide and digested food all cross at capillaries. Choose one and explain its direction using concentration.