A-LevelBiologyEnergy and respiration9700/42 · May/June 2019 · Q89 Marks
(a) Oxidative phosphorylation takes place in the mitochondrion. Table 8.1 shows the different stages of oxidative phosphorylation. The stages are not listed in the correct order. Complete Table 8.2 to show the correct order of the stages. Two of the stages have been completed for you. [Table 8.1] [Table 8.2]
- (a)Oxidative phosphorylation takes place in the mitochondrion. Table 8.1 shows the different stages of oxidative phosphorylation. The stages are not listed in the correct order. Complete Table 8.2 to show the correct order of the stages. Two of the stages have been completed for you.[4]
- (b)State the precise location in a mitochondrion of each of the following. ATP synthase Krebs cycle electron transport chain coenzyme A pyruvate[5]
Mark scheme
Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.
- [4] correct order letter of stage 1 V 2 S 3 U 4 W 5 R 6 Q 7 X 8 T
- 6 correct = 4 marks 4/5 correct = 3 marks 2/3 correct = 2 marks 1 correct = 1 mark
- [5] ATP synthase - cristae / inner membrane ;
- Krebs cycle - matrix;
- electron transport chain - cristae / inner membrane ;
- coenzyme A - matrix;
- pyruvate - matrix;
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →