16 questions · 16 marks · ≈ 16 min
Glucose is broken down in the chemical processes of aerobic respiration.
Which row of the table below shows the correct products of this breakdown?
| energy | water | lactic acid | carbon dioxide | |
|---|---|---|---|---|
| A | X | X | ✓ | X |
| B | ✓ | X | X | ✓ |
| C | X | ✓ | X | ✓ |
| D | ✓ | ✓ | X | ✓ |
Choose your answer
Which of the following is the correct word equation for aerobic respiration in plants?
Choose your answer
glucose + oxygen → carbon dioxide + water
carbon dioxide + water → glucose + oxygen
glucose + water → carbon dioxide + oxygen
glucose + carbon dioxide → water + oxygen
Which of the following processes require, and are dependent on, the activity of enzymes?
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1 and 2
1 and 3
1, 2 and 4
All of them
A student investigated respiration in yeast. They set up the experiment as shown in the diagram below.
Every 30 minutes they replaced the water with the same volume but it was 10 oC warmer and counted the bubbles given off in 2 minutes.
What are the independent and dependent variables in this experiment?
| independent | dependent | |
|---|---|---|
| A | number of bubbles | time |
| B | time | number of bubbles |
| C | water temperature | number of bubbles |
| D | water temperature | volume of water |
Choose your answer
Which of the following do humans require energy for?
Choose your answer
1 & 3
2, 3 & 4
4 only
All of the above
Extended Tier Only
Which row in the table below shows the correct products produced by anaerobic respiration in yeast and in animals?
| animals | yeast | |||
|---|---|---|---|---|
| lactic acid | carbon dioxide | lactic acid | carbon dioxide | |
| A | X | ✓ | X | X |
| B | ✓ | X | X | ✓ |
| C | X | ✓ | ✓ | X |
| D | ✓ | ✓ | ✓ | X |
Choose your answer
Extended Tier Only
During vigorous exercise, such as cycling uphill, lactic acid builds up in the muscles.
How is this lactic acid removed during recovery?
Choose your answer
excretion of lactic acid by the kidneys
anaerobic respiration of lactic acid in the muscles
aerobic respiration of lactic acid in the liver
excretion of lactic acid by the lungs
Extended Tier Only
Why does anaerobic respiration of glucose release less energy in muscle cells than aerobic respiration?
Choose your answer
1, 2 and 4
2 only
2 and 3
4 only
The diagram below shows an experimental set-up which can be used to investigate gas exchange in a plant leaf.
In which direction would the ink drop move and for what reason?
| direction | reason | |
|---|---|---|
| A | to the right | photosynthesis |
| B | to the left | photosynthesis |
| C | to the right | respiration |
| D | to the left | respiration |
Choose your answer
Extended Tier Only
The diagram below shows an experiment set up by a group of students to investigate respiration in yeast.
Which row of the table below correctly describes the contents of the flask after 20 hours?
| new compound | gas produced | |
|---|---|---|
| A | ethanol (alcohol) | oxygen |
| B | ethanol (alcohol) | carbon dioxide |
| C | lactic acid | oxygen |
| D | lactic acid | carbon dioxide |
Choose your answer
Extended Tier Only
The diagram below shows an experiment set up by a teacher to demonstrate how an investigation into anaerobic respiration in yeast cells can be carried out.
Predict what would happen to the coloured liquid in the glass tube.
Choose your answer
Doesn’t move
Moves to the left
Moves rapidly to the right
Moves slowly to the right
Extended Tier Only
Four metabolic reactions that can occur in living organisms are shown below:
Which of the above reactions take place in yeast cells to release energy?
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1 and 2
1 and 3
3 and 4
1 and 4
Which of the following processes would release the most energy in a cell from one molecule of glucose?
Choose your answer
2 only
3 only
1 & 3
All of the above
In which conditions would the cells of a dicotyledonous green plant respire?
| mesophyll cell | root hair cell | |||
|---|---|---|---|---|
| darkness | bright light | darkness | bright light | |
| A | ✓ | X | ✓ | X |
| B | X | ✓ | X | X |
| C | X | X | X | X |
| D | ✓ | ✓ | ✓ | ✓ |
Choose your answer
Extended Tier Only
Which of the following is the correct balanced symbol equation for aerobic respiration in yeast cells?
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C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
C6H12O6 → 2 C3H6O3
6 CO2 + 6 H2O → C6H12O6 + 6 O2
C6H12O6 → 2 C2H5OH + 2 CO2
Extended Tier Only
The list below shows four metabolic processes that can occur in living cells.
Which row of the table correctly represents the processes that can occur in muscle cells and yeast cells.
| in muscles | in yeast | |
|---|---|---|
| A | 3 only | 1 & 4 |
| B | 3 & 4 | 2 & 3 |
| C | 2 only | 1, 3 & 4 |
| D | 2 & 3 | 3 & 4 |
Choose your answer