Biology 9700 · AS & A Level · Energy

Energy — practice question

(a)[9]

Outline why living organisms require energy, using named examples.

(b)[6]

Explain the different energy values of carbohydrate, lipid and protein when they act as respiratory substrates.

Worked solution & mark scheme

This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: ATP functions as the universal energy currency

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