THE APPLE INTERNATIONAL COMMUNITY SCHOOL
END OF TERM 1 RECAPITULATION WORKSHEET
Subject : Biology Year: 9
1. Which of the following best describes diffusion?
a) Movement of water molecules from a high concentration to a low concentration.
b) Movement of particles from a low concentration to a high concentration
c) Movement of particles from a high concentration to a low concentration
d) Movement of particles that requires energy from ATP
2. Which factor does NOT affect the rate of diffusion?
a) Temperature
b) Concentration gradient
c) Size of the molecules
d) Presence of ATP
3. Which of the following is a waste product of aerobic respiration?
a) Glucose
b) Oxygen
c) Water
d) Chlorophyll
4. Which of the following is found in plant cells but not in animal cells?
a) Nucleus
b) Mitochondria
c) Chloroplast
d) Cell membrane
5. Which molecule is commonly used by cells to provide energy for active transport?
a) DNA
b) Oxygen
c) Glucose
d) ATP
6. Which of the following is an example of active transport in cells?
a) Oxygen moving from the lungs into the blood
b) Water moving through a plant’s roots via osmosis
c) Sodium and potassium ions moving across nerve cell membranes
d) Carbon dioxide moving out of cells into the blood
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7. Which row in the table shows the substances used in aerobic respiration and the substances
produced?
8. Which of the following is an example of diffusion?
9. Who discovered and named cells?
10. Which event happened in 1931?
11. Name the specialized cells described.
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12. List three differences between plant and animal cells.
i-___________________________________________________________________________
ii-___________________________________________________________________________
iii-___________________________________________________________________________
13. The diagrams below show four different types of cells.
Name the cell shown in diagram C. ___________________________
14. Draw a typical plant cell. Label the following structures: cell wall, nucleus, chloroplast, vacuole,
and cell membrane.
15. Give an example of where diffusion occurs in the human body.
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
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16. A student measures the size of two different cell types and records the following data:
a) Which cell type is larger on average? __________________
b) Suggest a reason why plant cells might be larger than animal cells.
_________________________________________________________________________
_________________________________________________________________________
17. The diagram below represents a particular type of cell.
a) Identify the type of cell. ____________________________
b) How is this cell different from an animal and a plant cell?
_______________________________________________________________
_______________________________________________________________
18. What is active transport? How is it different from passive transport?
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19. Explain why both plant and animal cells need mitochondria, even though only plant cells have
chloroplasts.
20. A scientist discovers a new organism in a hot spring. Under the microscope, they see that the cell
has no nucleus, and its DNA is floating freely in the cytoplasm. Based on this observation, what
type of cell is it likely to be, and why?
21. A student observes a cell under a microscope and sees small, circular DNA molecules separate
from the main DNA. Explain what these structures are and describe one way they can benefit
the cell.
22. A scientist observes that gas diffuses faster at 30°C than at 10°C. Explain why this occurs.
23. Compare aerobic and anaerobic respiration in terms of oxygen requirement and energy output.
24. A student measures the rate of respiration by recording the amount of carbon dioxide produced
in different temperatures. The results are shown below:
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a) Describe the trend shown in the data.
__________________________________________________________________________
__________________________________________________________________________
b) Explain why the amount of CO₂ produced decreases at 50°C.
c) A person’s breathing rate increases after they start running. Explain how this helps maintain
their energy levels during exercise.
25. Describe an experiment to investigate the effect of exercise on the rate of respiration in
humans. Include your hypothesis, method, variables, and expected results.
Hypothesis: __________________________________________________________________
Method: ____________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
Variables:
Independent: __________________________________
Dependent: ___________________________________
Control: _______________________________________
Expected results: _____________________________________________________________
____________________________________________________________________________
