Practice C1.2 Cell respiration with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A student measures the rate of yeast respiration by collecting CO₂ in a syringe over time. What is the best unit to express the result?
Which is the correct word equation for anaerobic respiration in humans?
Which statement best describes cell respiration?
What is required to synthesize ATP from ADP and phosphate?
Which comparison between aerobic and anaerobic respiration in animal cells is correct?
The table shows key differences between aerobic respiration and lactic acid fermentation in muscle cells.
| Feature | Aerobic | Anaerobic |
|---|---|---|
| Oxygen required? | Yes | No |
| ATP yield | High | Low |
| Waste product | Lactic acid |
The graph shows ethanol concentration increasing over time during anaerobic fermentation by yeast. A researcher introduces an inhibitor of alcohol dehydrogenase at hour 4.
Which of the following trends would you expect to observe after this point, and why?
Which of the following correctly compares aerobic and anaerobic respiration?
| Feature | Aerobic Respiration | Anaerobic Respiration |
|---|---|---|
| Location | Cytoplasm and mitochondria | Cytoplasm only |
| Oxygen required | Yes | No |
| ATP yield | High | Low |
| End product | CO₂ and water | Lactic acid |
Which of the following changes require an energy input?
| Number | Reaction |
|---|---|
| 1 | |
| 2 | |
| 3 | Hydrolysis of |
| 4 | Formation of in mitochondria |
A student grows yeast at different temperatures and measures release. At which temperature would you expect the highest rate of respiration?
| Temperature / °C | Rate of release / mL min |
|---|---|
| 10 | 0.3 |
| 20 | 1.1 |
| 37 | 2.4 |
| 50 | 0.5 |
The image shows part of a plant cell with a chloroplast in close proximity to mitochondria.
State two structural similarities between mitochondria and chloroplasts.
Compare and contrast mitochondria and chloroplasts in terms of the substrates they use and the products they produce.
Outline how the compounds produced by chloroplasts are distributed throughout the plant.
Practice C1.2 Cell respiration with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A student measures the rate of yeast respiration by collecting CO₂ in a syringe over time. What is the best unit to express the result?
Which is the correct word equation for anaerobic respiration in humans?
Which statement best describes cell respiration?
What is required to synthesize ATP from ADP and phosphate?
Which comparison between aerobic and anaerobic respiration in animal cells is correct?
The table shows key differences between aerobic respiration and lactic acid fermentation in muscle cells.
| Feature | Aerobic | Anaerobic |
|---|---|---|
| Oxygen required? | Yes | No |
| ATP yield | High | Low |
| Waste product | Lactic acid |
The graph shows ethanol concentration increasing over time during anaerobic fermentation by yeast. A researcher introduces an inhibitor of alcohol dehydrogenase at hour 4.
Which of the following trends would you expect to observe after this point, and why?
Which of the following correctly compares aerobic and anaerobic respiration?
| Feature | Aerobic Respiration | Anaerobic Respiration |
|---|---|---|
| Location | Cytoplasm and mitochondria | Cytoplasm only |
| Oxygen required | Yes | No |
| ATP yield | High | Low |
| End product | CO₂ and water | Lactic acid |
Which of the following changes require an energy input?
| Number | Reaction |
|---|---|
| 1 | |
| 2 | |
| 3 | Hydrolysis of |
| 4 | Formation of in mitochondria |
A student grows yeast at different temperatures and measures release. At which temperature would you expect the highest rate of respiration?
| Temperature / °C | Rate of release / mL min |
|---|---|
| 10 | 0.3 |
| 20 | 1.1 |
| 37 | 2.4 |
| 50 | 0.5 |
The image shows part of a plant cell with a chloroplast in close proximity to mitochondria.
State two structural similarities between mitochondria and chloroplasts.
Compare and contrast mitochondria and chloroplasts in terms of the substrates they use and the products they produce.
Outline how the compounds produced by chloroplasts are distributed throughout the plant.