Biology 9700 · AS & A Level · Respiration

Respiration — practice question

During aerobic respiration, ATP is made by substrate-linked reactions and by oxidative phosphorylation.
(a)[7]

Outline how oxidative phosphorylation works.

(b)[4]

In a respiration experiment, two yeast groups, population A and population B, were studied. The cells in population A contained no mitochondria, whereas those in population B contained mitochondria. Glucose solution was supplied to both groups, and ATP concentration was recorded once every minute for seven minutes. Fig. 7.1 presents the findings. Describe and explain how the results for population A and population B differ, as shown in Fig. 7.1.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Reduced NAD / FAD.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI