Biology 0610 · IGCSE · Enzymes

Enzymes — practice question

(a)[2]

Tick every box that describes enzymes.

(b(i))[1]

State the optimum pH of enzyme Z.

(b(ii))[1]

State a pH value at which both enzymes X and Y are active.

(b(iii))[1]

State a pH value at which enzyme Y is completely denatured.

(b(iv))[2]

Describe where it is located and what it does in the digestive system.

(b(v))[2]

State the substrate and product of enzyme Y.

(c)[1]

State the type of digestion that uses enzymes.

(d)[1]

State one factor, other than pH, that affects enzyme activity.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: box 2: they are involved in all metabolic reactions

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