Free Cell size & magnification questions for IGCSE Biology (0610), part of Organisation of the organism. Each question has the answer and the marking points an examiner would look for.
Generate a full Cell Size & Magnification worksheet →All Organisation of the organism questionsPlant cells and animal cells are compared.
1 Both have a cell membrane, cytoplasm and ribosomes.
2 Both plant and animal cells contain mitochondria.
3 All plant cells contain chloroplasts.
Which statements are correct?
Answer: B
Which row matches the cell structure with its function?
| ribosome | mitochondrion | cell wall | |
|---|---|---|---|
| A | aerobic respiration | protein synthesis | prevents the cell bursting |
| B | protein synthesis | aerobic respiration | prevents the cell bursting |
| C | protein synthesis | photosynthesis | controls what enters the cell |
| D | protein synthesis | aerobic respiration | controls what enters the cell |
Answer: B
Which structure is found in both plant and animal cells?
Answer: C
A student prepares a slide of onion epidermis cells.
Describe how to prepare the slide.
Explain why iodine solution is added.
Explain why onion cells have no chloroplasts.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | peel epidermis, water/iodine, coverslip at angle peel a thin layer of epidermis B1 place on a slide with a drop of water/iodine B1 lower a coverslip at an angle to avoid air bubbles B1 | 3 |
| (b) | stains nucleus/starch to make visible to stain the cells so structures (nucleus) are visible B1 | 1 |
| (c) | underground, no light the bulb grows underground with no light, so no photosynthesis B1 | 1 |
Plant and animal cells have structural similarities and differences.
Name three structures found in both plant and animal cells.
Name three structures found in plant cells but not animal cells.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | nucleus, cytoplasm, cell membrane, mitochondria, ribosomes Any 3 of: any three of: nucleus; cytoplasm; cell membrane; mitochondria; ribosomes B3 | 3 |
| (b) | cell wall, chloroplasts, permanent vacuole cell wall B1 chloroplasts B1 large permanent vacuole B1 | 3 |
A cheek cell has an actual diameter of 30 µm. It is viewed with a microscope at a magnification of ×400.
Calculate the diameter of the image in mm.
State why micrometres are used to measure cells.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | 12 mm image = actual × magnification = 12000 µm C1 12 mm A1 | 2 |
| (b) | cells are very small Any 1 of: cells are very small; micrometres give convenient numbers B1 | 1 |
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Meet Riyaz →Original Cambridge-style practice questions written for mentorriyaz.in. These are not Cambridge past paper questions, and this site is not affiliated with or endorsed by Cambridge University Press & Assessment. Updated 2026-11-04. Paper generator · mentorriyaz.in