2 (a) (i) State the name of the process that occurs in the presence of chlorophyll. … [1] (ii) State the name of the mineral ion the plant needs to make chlorophyll. … [1] (iii) State the name of the structure that contains chlorophyll in a plant cell. … [1] (b) Fig. 2.1 shows a diagram of a cross-section of a leaf. A B C D Fig. 2.1 (i) State the letter that identifies the part of the leaf that contains the most chlorophyll in Fig. 2.1. … [1] (ii) State the name of the tissue in the leaf that does not contain chlorophyll. … [1] [Total: 5]

2(a)(i) photosynthesis ; 1 2(a)(ii) magnesium ; 1 2(a)(iii) chloroplast ; 1 2(b)(i) B ; 1 2(b)(ii) (upper) epidermis ; 1 To earn marks, you must state the correct biological term for each process, mineral ion, or structure, and correctly identify the letter corresponding to the part of the leaf with the most chlorophyll, and the name of the tissue without chlorophyll.

4 (a) Fig. 4.1 is a diagram of a plant cell. … … … … Fig. 4.1 Identify the parts of the plant cell in Fig. 4.1 by labelling them in the spaces provided, using words from the list. cell membrane cell wall chloroplast cytoplasm nucleus vacuole [4] (b) The boxes on the left show parts of a plant cell. The boxes on the right show the functions of the parts. Draw lines to link each part with its function. Draw four lines. part function contains the genetic material cell wall filled with sap and supports the plant cell chloroplast made of cellulose and strengthens the plant cell nucleus site of photosynthesis vacuole site of respiration [4] (c) Xylem is a specialised plant tissue. State two functions of xylem tissue. 1 … 2 … [2] (d) Plant shoots and roots respond to stimuli. Fig. 4.2 is a photograph of a plant that has been grown in the dark. The plant has been grown with the pot in this position and is showing a tropic response to this stimulus. Fig. 4.2 (i) State the name of the tropic response shown in Fig. 4.2. … [1] (ii) Describe how the roots would respond to the same stimulus. … … … [1] [Total: 12]

3(a) arrow drawn from chuckwallas to coyotes ; 1 3(b) producer consumer herbivore carnivore coyote   jack rabbit   rattlesnake   yucca plant  ;;;; 4 one mark for each correct column R each additional tick 3(c) mountain lion ; 1 3(d) (population of) chuckwallas would decrease ; idea of there would be, less food / less energy / more competition (for food) ; 2 4(a) plant cell labelled from top to bottom: cell wall ; cytoplasm ; chloroplast ; cell membrane ; 4 4(b) part funtion ;;;; contains the genetic material cell wall filled with sap and supports the plant cell chloroplast made of cellulose and strengthens the plant cell nucleus site of photosynthesis vacuole site of respiration 4 one mark per part A line between chloroplast and contains the genetic material R other additional lines 4(c) conduction / transport / transfer of, water / mineral ions ; support ; 2 4(d)(i) gravitropism ; 1 4(d)(ii) roots would grow downwards / AW ; 1

6 (a) (i) State the word equation for photosynthesis. … [2] (ii) State the source of energy for photosynthesis. … [1] (iii) State the name of the structure in a cell where photosynthesis takes place. … [1] (b) The effect of carbon dioxide concentration on the rate of photosynthesis in an aquatic plant was investigated. • 10 test-tubes were prepared. Each contained water, an aquatic plant and a different concentration of carbon dioxide. • Each test-tube was placed next to a lamp and the temperature in the test-tubes was maintained at 20 °C. • The number of bubbles produced by each aquatic plant in one minute was counted. Fig. 6.1 shows the apparatus that was used. bubbles test-tube aquatic plant water containing carbon dioxide not to scale lamp Fig. 6.1 The results of the investigation are shown in Fig. 6.2. 0.00 0 5 10 number of bubbles per minute carbon dioxide concentration / arbitrary units 15 20 25 0.05 0.10 0.15 0.20 Fig. 6.2 (i) State the maximum number of bubbles produced in one minute. … [1] (ii) The investigator concluded that 0.10 arbitrary units was the optimum (best) concentration of carbon dioxide for photosynthesis in this investigation. Describe the evidence shown in Fig. 6.2 that supports the investigator’s conclusion. … … … … … [2] (iii) The investigation described in 6(b) was repeated but the temperature was reduced from 20 °C to 10 °C. Predict the effect of reducing the temperature on the number of bubbles produced and explain your answer. prediction … … explanation … … … [2] (c) Carbon dioxide is a greenhouse gas. State the name of one other greenhouse gas. … [1] [Total: 10]

5(a) gamete ; meiosis ; fuse ; zygote ; different from ; 5 5(b) R ; S ; 2 5(c) female will be XX (and male is XY )(chromosomes) / sex chromosomes will ,be the same / look the same ; 1 5(d) any four from: large petals ; colourful / bright, petals ; scented ; nectar / nectaries ; anthers / stigmas, inside the flower ; sticky / spiky, pollen grains ; less pollen made (than wind pollinated) ; AVPs ;; e.g. larger / heavy, pollen grain 4 6(a)(i) carbon dioxide + water → ; glucose + oxygen ; 2 6(a)(ii) sun / light ; 1 6(a)(iii) chloroplast ; 1 6(b)(i) 20 ; 1 6(b)(ii) idea of (0.10 au) lowest concentration (of carbon dioxide) that produces the, maximum / highest, number of bubbles ; number of bubbles, does not increase / stays constant, after concentration (of carbon dioxide) 0.10 au ; 2 6(b)(iii) prediction: fewer / no, bubbles produced ; explanation: chemical reactions or photosynthesis, are slower / less photosynthesis / ref. to enzymes being less active ; 2 6(c) methane / AVP ; 1

7 (a) Fig. 7.1 is a diagram of an animal cell. P Q R Fig. 7.1 Complete Table 7.1 by stating the functions of the structures labelled in Fig. 7.1. Table 7.1 structure label function of the structure P Q R [3] (b) Cell structure can be specialised to perform a specific function. A range of animal cell types are shown in Fig. 7.2. The boxes on the left contain the names of four specialised cells. The boxes in the middle contain diagrams of different specialised cells. The boxes on the right contain descriptions of functions. Draw one line from each name of a specialised cell to the diagram of that cell. Draw one line from each diagram of a specialised cell to its function. Two lines have been drawn for you. Draw six more lines. ciliated cell specialised cell names specialised cell diagrams functions nerve cell red blood cell sperm cell absorption of mineral ions conduction of impulses movement of mucus in the trachea sexual reproduction transport of oxygen Fig. 7.2 [6] [Total: 9]

6(a)(ii) respiration ; 1 6(a)(iii) animals ; 1 6(a)(iv) fossil fuels ; 1 6(b) any three from: 1 increase in carbon dioxide (concentration) ; 2 habitat destruction ; 3 loss of soil / soil erosion ; 4 idea of disruption of, food chains / food webs ; 5 lack of biodiversity / extinction of species ; 6 flooding ; 7 AVP ; e.g. reduction in rainfall 3 6(c)(i) decay / paddy fields / cattle / AVP ; 1 6(c)(ii) any two from: enhanced greenhouse effect ; climate change / global warming ; AVP ; 2 7(a) P controls movement of substances into and out of a cell ; Q site of, chemical / metabolic, reactions ; R controls cell activities ; 3 7(b) ;;;;;; 6 one mark for each correct link R each additional line For part (a), you need to state the correct function for each labelled structure: P controls substance movement, Q is the site of chemical reactions, and R controls cell activities. For part (b), you must draw six correct lines, linking each specialized cell name to its diagram and then to its function, with each correct line earning one mark.

4 The diagram shows four animal cells, as seen under a light microscope. X What will be present at X? A one cell membrane B one cell wall C two cell membranes D two cell walls

Answer: C To earn the mark, a student must correctly identify that the boundary between two animal cells (X) consists of two cell membranes.

Cambridge IGCSE Biology · 0610

IGCSE Biology (0610) Cells past paper questions

Cell questions test animal, plant, and bacterial cell structure and the function of each part.

279 free questions from 2017–2021, each with its marking scheme. Open the full topical bank to filter by subtopic, paper, and year.

Cells in IGCSE Biology 0610 exams, 2020–2025

Across 2020–2025, Cells accounted for 337 questions worth 1,856 marks in Cambridge IGCSE Biology (0610) papers.

By year
Year	Questions	Marks
2020	64	344
2021	50	163
2022	57	353
2023	52	325
2024	62	346
2025	52	325

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2.1 Cell structure976 marks
2.2 Size of specimens762 marks

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Paper 6 · 17 qs

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2021 May/Jun · Paper 3 · Q2 · 5 marks
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2021 Feb/Mar · Paper 3 · Q4 · 12 marks
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2021 Oct/Nov · Paper 3 · Q6 · 10 marks
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2021 Oct/Nov · Paper 3 · Q7 · 9 marks
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2021 Feb/Mar · Paper 1 · Q4 · 1 mark
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Answer: C
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Cells in IGCSE Biology 0610 exams, 2020–2025

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