1 markGlucose 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 | ✓ |
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1 markWhich of the following is the correct word equation for aerobic respiration in plants?
glucose + oxygen → carbon dioxide + water
carbon dioxide + water → glucose + oxygen
glucose + water → carbon dioxide + oxygen
glucose + carbon dioxide → water + oxygen
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1 markWhich of the following processes require, and are dependent on, the activity of enzymes?
aerobic respiration
glucose → lactic acid
osmosis
anaerobic respiration in yeast
1 and 2
1 and 3
1, 2 and 4
All of them
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What is not a feature of aerobic respiration?
It occurs in both plants and animals.
It releases a smaller amount of energy than anaerobic respiration.
It requires the presence of oxygen.
The end products are carbon dioxide and water.
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What are the products of aerobic respiration in animals and plants?
carbon dioxide and glucose
carbon dioxide and water
glucose and oxygen
lactic acid
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1 markThe 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 |
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In an investigation, scientists treated plant roots with a chemical that stops aerobic respiration. They observed that after the treatment, the plant roots absorbed nitrate ions more slowly.
Which statement explains this observation?
Anaerobic respiration does not release energy.
The plant cells cannot respire.
There is less energy for active transport of nitrate ions.
There is less energy for diffusion of nitrate ions.
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1 markFour metabolic reactions that can occur in living organisms are shown below:
C6H12O6 + 6O2 → 6CO2+ 6H2O
glucose → lactic acid
6CO2+ 6H2O → C6H12O6 + 6O2
C6H12O6 → 2C2H5OH + 2CO2
Which of the above reactions take place in yeast cells to release energy?
1 and 2
1 and 3
3 and 4
1 and 4
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1 markWhich of the following processes would release the most energy in a cell from one molecule of glucose?
Aerobic respiration in yeast
Aerobic respiration in animals
Aerobic respiration in plants
2 only
3 only
1 & 3
All of the above
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1 markIn 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 | ✓ | ✓ | ✓ | ✓ |
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1 markWhich of the following is the correct balanced symbol equation for aerobic respiration in yeast cells?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
C6H12O6 → 2 C3H6O3
6 CO2 + 6 H2O → C6H12O6 + 6 O2
C6H12O6 → 2 C2H5OH + 2 CO2
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The diagram shows the apparatus used to investigate the rate of respiration of germinating pea seeds.
In an experiment, the coloured oil drop moved 24mm to the left in 30 minutes. Calculate the rate of respiration of the pea seeds in: mm3 of oxygen, per gram of pea seeds, per minute. Assume π = 3.0
0.03mm3 /g/min
0.06mm3 /g/min
0.12mm3 /g/min
0.60mm3 /g/min
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