Organisation of the organism (cells) — IGCSE Biology (0610) questions by topic
Cell organisation questions label plant cell structures on a diagram, identify which tissue a vacuole-and-cell-wall cell without chloroplasts comes from, calculate a copepod's actual length from a diagram's stated magnification, and choose the correct statement about cell wall and chloroplast presence in animal cells versus bacteria.
Identify, state, explain, describe and calculate lead 64 real questions worth 1 to 15 marks from 2023 to 2025 papers. Because magnification calculations compound any misread scale, submitting a worked size calculation for instant marking flags a misapplied formula at the exact step it occurred rather than after the final answer has been given.
May–June 2025, Paper 11
Which type of cell transports oxygen? A ciliated cell B neurone C palisade mesophyll cell D red blood cell
Answer this question and get it marked →The diagram shows a plant cell. (The diagram shows a rectangular plant cell with a large central vacuole, several small oval organelles (chloroplasts) around the cytoplasm, and a…
Answer this question and get it marked →Four students used a microscope to view some onion plant cells. Each student drew one of the cells. Each student calculated the actual length of the cell and the magnification of…
Answer this question and get it marked →May–June 2025, Paper 12
The diagram shows a plant cell. The diagram labels four structures A, B, C and D with leader lines: A points to a structure near the top left of the cell, B points to a structure…
Answer this question and get it marked →The table shows the magnifications and image lengths of three specimens when seen with a light microscope. specimen magnification image length / mm --- --- --- X x50 0.20 Y x150…
Answer this question and get it marked →May–June 2025, Paper 13
Which features do animal cells share with plant cells? chloroplast cytoplasm nucleus --- --- --- --- A yes yes yes B yes yes no C no yes yes D no no yes
Answer this question and get it marked →A student makes a drawing of an animal. The length of the animal in the drawing is 30 mm. The actual length of the animal is 200 mm. What is the magnification of the student's…
Answer this question and get it marked →May–June 2025, Paper 21
Which structures are found in both plant and animal cells? A cell walls and cell membranes B nuclei and cell walls C cytoplasm and chloroplasts D cell membranes and nuclei
Answer this question and get it marked →May–June 2025, Paper 22
What is a leaf? A a cell B an organ C an organ system D a tissue
Answer this question and get it marked →May–June 2025, Paper 31
Fig. 1.1 shows some specialised cells labelled A, B, C, D and E (not to scale). Cell A is a rounded biconcave cell with no nucleus (a red blood cell). Cell B is a long thin cell…
Answer this question and get it marked →May–June 2024, Paper 32
Fig. 6.1 is a diagram of a bacterial cell with a plasmid labelled and five answer lines for other structures. Complete Fig. 6.1 by using the words in the list to label these…
Answer this question and get it marked →May–June 2024, Paper 41
Fig. 3.1 shows a drawing of a root hair cell (with many mitochondria) and Fig. 3.2 shows a drawing of a palisade cell (with chloroplasts and a mitochondrion). Explain the reasons…
Answer this question and get it marked →May–June 2024, Paper 42
Fungal cells and plant cells contain mitochondria. State the function of mitochondria.
Answer this question and get it marked →May–June 2024, Paper 43
Fig. 1.1 is a diagram of an animal cell with parts labelled A, B, C and D (A = nucleus, B = cytoplasm, C = cell membrane, D = mitochondria). Complete Table 1.1 by writing the name…
Answer this question and get it marked →October–November 2024, Paper 11
Which structures are found in an animal cell? (columns: cell membrane, cell wall, chloroplast, large vacuole, cytoplasm, nucleus) A cell membrane yes, cell wall yes, chloroplast…
Answer this question and get it marked →What is the function of ciliated cells in the bronchi? A to absorb oxygen B to digest pathogens C to move mucus D to produce antibodies
Answer this question and get it marked →The diagram shows an organism called a copepod. The magnification of the diagram is 30. The length of line XY is 45 mm. What is the actual length of the copepod? A 0.67 mm B 1.5…
Answer this question and get it marked →October–November 2024, Paper 12
Which type of cell moves mucus? A ciliated cell B egg cell C guard cell D root hair cell
Answer this question and get it marked →The diagram shows a plant cell with regions labelled A, B, C and D. Which letter indicates the location of the cell membrane? A A B B C C D D
Answer this question and get it marked →Which magnification formula is correct? A magnification = actual size / image size B magnification = actual size + image size C magnification = image size / actual size D…
Answer this question and get it marked →October–November 2024, Paper 13
The diagram shows two guard cells from a leaf, with parts labelled A, B, C and D. Which labelled part would also be found in sperm cells? A A B B C C D D
Answer this question and get it marked →The photograph shows part of a cross-section of a root, with a root hair and xylem labelled. The root hair and the xylem are part of the same A cell and organism. B cell and…
Answer this question and get it marked →Which formula is correct for calculations involving image size, actual size and magnification? A actual size = image size x magnification B image size = magnification x actual…
Answer this question and get it marked →October–November 2024, Paper 21
The diagram shows a liver cell. Which features are present in this cell and also in most plant cells? A cell membrane and cytoplasm B cell membrane and sap vacuole C cell wall and…
Answer this question and get it marked →A tick is a type of arachnid. The length of an adult tick is 2.3 mm. What is the length of the tick in micrometres? A 0.23 micrometres B 23 micrometres C 230 micrometres D 2300…
Answer this question and get it marked →October–November 2024, Paper 22
What is the function of mitochondria in cells? A to absorb light energy B to produce glucose C to release energy D to transport oxygen
Answer this question and get it marked →Which row shows a function of the cell membrane and a function of the cell wall in a palisade cell? (columns: cell membrane; cell wall) A active transport; active transport B…
Answer this question and get it marked →A specimen is viewed under a microscope with a 10x magnification. The specimen image measures 30 mm. What is the actual size of the specimen? A 3 mm B 30 mm C 300 mm D 3000 mm
Answer this question and get it marked →Which group of organs belongs to the same organ system? A diaphragm, oesophagus, trachea B heart, liver, lungs C heart, stomach, trachea D oesophagus, intestine, stomach
Answer this question and get it marked →October–November 2024, Paper 23
The diagram shows a type of plant cell with a nucleus, cytoplasm, cell wall and vacuole (no chloroplasts shown). Where does this type of cell come from? A root B cuticle C…
Answer this question and get it marked →What is the formula for calculating magnification? A actual size / image size B actual size x image size C image size / actual size D image size x actual size
Answer this question and get it marked →October–November 2024, Paper 31
Fig. 1.1 shows a diagram of an animal cell and a bacterial cell. The animal cell has structures labelled A, B, C and D; the bacterial cell has structures labelled E, F, G and H…
Answer this question and get it marked →May–June 2023, Paper 11
Which row shows structures that are present in both root hair cells and palisade mesophyll cells? The table has columns: cell wall, chloroplasts, cytoplasm, vacuole. Each row…
Answer this question and get it marked →The diagram shows a cell at ×1500 magnification, measured against a scale bar reading 0 to 10 cm. The image of the cell measures about 5 cm. What is the actual size of the cell? A…
Answer this question and get it marked →May–June 2023, Paper 12
Which structures are found in the cells of all living organisms? 1 cell membrane 2 chloroplast 3 cytoplasm A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Answer this question and get it marked →A diagram of a human red blood cell is shown. The length of line XY on the diagram is 40 mm. The actual width of the cell is 0.008 mm. What is the magnification of the diagram? A…
Answer this question and get it marked →May–June 2023, Paper 13
Which statement about cell structure is correct? A An animal cell has a cell wall. B A bacterium has a cell wall. C An animal cell has chloroplasts. D A bacterium has chloroplasts.
Answer this question and get it marked →The photograph shows a limpet. The length of line PQ on the image is 65 mm. The image is at magnification ×2.5. What is the actual diameter of the limpet along line PQ? A 2.6 mm B…
Answer this question and get it marked →May–June 2023, Paper 21
Which row shows structures that are present in both root hair cells and palisade mesophyll cells? Columns: cell wall, chloroplasts, cytoplasm, vacuole (key: ✓ = present, blank =…
Answer this question and get it marked →The photomicrograph shows a plant cell. The length of line XY is 90 mm. The actual length of the cell is 30 µm. What is the magnification of the photomicrograph? A ×300 B ×3000 C…
Answer this question and get it marked →May–June 2023, Paper 22
Which structures are found in the cells of all living organisms? 1 cell membrane 2 chloroplast 3 cytoplasm A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Answer this question and get it marked →In the diagram of the palisade cell, the distance between X and Y is 20 mm. The actual width of the cell between X and Y is 40 µm. What is the magnification of the diagram? A ×200…
Answer this question and get it marked →May–June 2023, Paper 23
Which statement about cell structure is correct? A An animal cell has a cell wall. B A bacterium has a cell wall. C An animal cell has chloroplasts. D A bacterium has chloroplasts.
Answer this question and get it marked →The diameter of an egg cell from a frog is 2.5 mm. The diameter of an egg cell from a human is 120 µm. Which value shows approximately how many times larger an egg cell from a…
Answer this question and get it marked →May–June 2023, Paper 32
Fig. 2.1 is a diagram showing some of the structures found in a plant cell, with structures labelled L, M, N, Q, R, S and T. Table 2.1 shows the names of some plant cell…
Answer this question and get it marked →May–June 2023, Paper 33
Fig. 2.1 is a labelled diagram of an animal cell with structures labelled A, B, C, D and E. The boxes on the left show the functions of some of the structures ('contains and…
Answer this question and get it marked →May–June 2023, Paper 42
Fig. 1.1 is a diagram of part of a cross-section of a leaf, with three layers A, B and C and stomata on the lower surface. Explain why a leaf is considered to be an organ.
Answer this question and get it marked →Fig. 5.1 is a photomicrograph of a structure found in animal and plant cells, with a structure labelled A. State the name and function of the cell structure labelled A in Fig. 5.1.
Answer this question and get it marked →October–November 2023, Paper 11
In a mesophyll cell, where are chloroplasts found? A between the cell wall and the cell membrane B in the cytoplasm C in the nucleus D in the vacuole
Answer this question and get it marked →The cell shown in the diagram has been magnified 3000 times. The diagram is 21 mm wide. What is the actual diameter of the cell? A 21 mm B 21 mm ÷ 3000 C 21 mm × 3000 D 3000 ÷ 21…
Answer this question and get it marked →October–November 2023, Paper 12
Which features are possessed by all plant cells? Columns: a cell wall; chloroplasts (key: ✓ = yes, blank = no). Which row A–D is correct? A B C D
Answer this question and get it marked →The diameter of an egg is 6.5 cm. A student draws the egg. The diameter of the egg in the drawing is 19.5 cm. What is the magnification of the drawing? A 0.3 B 3.0 C 6.5 D 300
Answer this question and get it marked →October–November 2023, Paper 13
The diagram shows the structure of a palisade cell from a leaf, with four structures labelled A, B, C and D. Which structure contains chlorophyll? A B C D
Answer this question and get it marked →A bacterial cell has a length of 40 mm when it is magnified by ×20 000. What is the actual length of the bacterial cell? A 0.0002 mm B 0.002 mm C 0.02 mm D 0.2 mm
Answer this question and get it marked →October–November 2023, Paper 21
Some structures found in cells are listed. 1 cell membrane 2 cell wall 3 mitochondria 4 nucleus Which structures are found in prokaryotic cells? A 1 and 2 B 1 and 4 C 2 and 3 D 3…
Answer this question and get it marked →In a mesophyll cell, where are chloroplasts found? A between the cell wall and the cell membrane B in the cytoplasm C in the nucleus D in the vacuole
Answer this question and get it marked →The diagram shows a flatworm. The flatworm has been magnified by 100. The image measures 50 mm. What is the actual size of the flatworm? A 0.5 mm B 5 mm C 50 mm D 500 mm
Answer this question and get it marked →October–November 2023, Paper 22
Which features are possessed by all plant cells? Columns: a cell wall; chloroplasts (key: ✓ = yes, blank = no). Which row A–D is correct? A B C D
Answer this question and get it marked →The length of a bacterium in a diagram is 50 mm. The magnification of the diagram is 5000. What is the actual length of the bacterium? A 1 µm B 10 µm C 100 µm D 1000 µm
Answer this question and get it marked →October–November 2023, Paper 23
The diagram shows an organism called Chlamydomonas, with ribosomes, a mitochondrion, a nucleus and a chloroplast labelled. Which processes can Chlamydomonas carry out? A…
Answer this question and get it marked →The diagram shows the structure of a palisade cell from a leaf, with four structures labelled A, B, C and D. Which structure contains chlorophyll? A B C D
Answer this question and get it marked →A diagram of a white blood cell has a diameter of 76 mm. The magnification of the diagram is ×8000. What is the actual diameter of the white blood cell? A 0.095 µm B 0.95 µm C 9.5…
Answer this question and get it marked →October–November 2023, Paper 31
The boxes on the left show two terms (community, population). The boxes on the right show the descriptions of some terms: a group of organisms that can reproduce to produce…
Answer this question and get it marked →October–November 2023, Paper 43
State two cell structures found in both animal and bacterial cells.
Answer this question and get it marked →Other IGCSE Biology topics
- Organisms and their environment (126)
- Human nutrition (95)
- Characteristics and classification of living organisms (84)
- Coordination and response (83)
- Reproduction (82)
- Inheritance (74)
- Plant nutrition (62)
- Transport in animals (62)
- Transport in plants (59)
- Movement into and out of cells (57)
- Variation and selection (50)
- Respiration (48)