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Plant and Animal Cell Differences — Free MYP3 Sciences Practice Questions
1QuestionComparing Diagrams of Plant vs Animal CellsConcept Practice
2 marks~3 minCriterion A
State one structure found in plant cells but not in animal cells. [1]
Describe the function of that structure. [1]
Describe the function of that structure. [1]
Solutions
2QuestionComparing Diagrams of Plant vs Animal CellsAssessment Practice
2 marks~3 minCriterion D
Some weedkillers work by breaking down cell walls. A farmer wants to use one of these weedkillers to remove weeds growing among their crops.
a
Explain why this type of weedkiller will harm plants but not animals. [1]
b
Identify one limitation of using diagrams of plant and animal cells to predict how a real weed will respond to this weedkiller. [1]
Solutions
3QuestionFunctions Related to Structure in Both CellsAssessment Practice
5 marks~8 minCriterion C
Two sealed chambers are kept at . Sample X contains plant leaf cells; Sample Y contains human muscle cells. Both chambers are exposed to light for the first 15 minutes, then placed in darkness.
Oxygen concentration (arbitrary units):
Time (min): 0, 5, 10, 15, 20, 25, 30
Sample X: 100, 120, 140, 160, 150, 140, 130
Sample Y: 100, 95, 90, 85, 80, 75, 70
Oxygen concentration (arbitrary units):
Time (min): 0, 5, 10, 15, 20, 25, 30
Sample X: 100, 120, 140, 160, 150, 140, 130
Sample Y: 100, 95, 90, 85, 80, 75, 70
a
State one function of chloroplasts and one function of mitochondria in a cell. [1]
b
Explain why the oxygen concentration in Sample X increases between 0 and 15 minutes, then decreases between 15 and 30 minutes. [2]
c
A student claims: "Sample Y is from a plant leaf because its oxygen concentration decreases over time." Analyse the data for Sample Y and evaluate this claim, using your knowledge of chloroplasts and mitochondria. [2]
Solutions
4QuestionComparing Diagrams of Plant vs Animal CellsAssessment Practice
6 marks~9 minCriterion B
A scientist compares three cell types using the data below.
| Cell type | Surface area-to-volume ratio | Metabolic rate (arbitrary units) |
|---|---|---|
| Plant leaf cell | 0.6 | 5 |
| Animal liver cell | 0.8 | 8 |
| Bacterial cell | 3.0 | 20 |
a
Describe the relationship between surface area-to-volume ratio and metabolic rate shown in the data. [1]
b
Explain how two structural differences between a plant cell and an animal cell affect the plant cell's ability to produce energy. [3]
c
The three cells are placed in conditions without oxygen. Using the data and your knowledge of cell structure, justify which cell type is most likely to survive the longest. [2]
Solutions
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