Question 1
The diagram below shows a mitochondrion.
Which letter represents the mitochondrial matrix?
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DP IB Biology: HL
Topic Questions
8.2 Cell Respiration
Question 2
The diagram shows the four stages of respiration.
Which row correctly identifies the stages represented in the diagram?
| 1 | 2 | 3 | 4 | |
| A | Glycolysis | The link reaction | The Krebs cycle | The electron transport chain |
| B | The Krebs cycle | Glycolysis | The link reaction | The electron transport chain |
| C | The Krebs cycle | The link reaction | Glycolysis | The electron transport chain |
| D | The Krebs cycle | The electron transport chain | The link reaction | Glycolysis |
Question 3
The image shows one of the processes of respiration.
Identify the molecule labelled A.
A co-transport protein
A phospholipid
ATP synthase
DNA polymerase
Question 4
Which process is not part of glycolysis?
Pyruvate is oxidised and decarboxylated
Triose phosphate is oxidised to glycerate-3-phosphate
Fructose bisphosphate is split to form two molecules of triose phosphate
NAD is reduced to form NADH + H+
Question 5
In 1961 Peter Mitchell proposed a theory which resulted in a paradigm shift in the field of bioenergetics.
Which theory did he develop?
The function of REDOX reactions in the electron transport chain
The function of oxygen as the final electron acceptor
The function of chemiosmosis in synthesis of ATP
The importance of the link reaction in progressing from anaerobic to aerobic respiration
