plumiCells as the basic units of living organisms: CAIE A‑Level Biology questions
Every CAIE A-Level Biology exam question on 1.2 Cells as the basic units of living organisms, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Q1(b)(i)
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Q1(b)(ii)
The whole paper ↗![June 2024 Paper 2, question 1(b)(ii): Identify the organelle labelled X and state one function of this organelle. name function [2] [Total: 10]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970021-jun24-01-bii-qp.webp)
Q4(b)(i)
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Q4(b)(ii)
The whole paper ↗![June 2024 Paper 2, question 4(b)(ii): Explain how Fig. 4.2 shows that each of the structures labelled X are intracellular. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970021-jun24-04-bii-qp.webp)
Q4(c)
The whole paper ↗![June 2024 Paper 2, question 4(c): Stem cells are found in the lining of the bronchi. Describe the function of centrioles and explain how they are involved in the cell cycle of a stem cell. [4] [](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970021-jun24-04-c-qp.webp)
Q1(b)
The whole paper ↗
All 14 questions on Cells as the basic units of living organisms, as a list
- June 2024, Paper 1, Q2 (1 mark): Which range of cell diameters is typical for prokaryotic cells? A 1 nm to 5 102 nm B 1 103 nm to 5 m C 1 101 m to 5 102 m D 1 102 m to 5 103 m
- June 2024, Paper 1, Q3 (1 mark): The diagram shows a typical animal cell. 1 2 3 Where would nucleic acids be found? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
- June 2024, Paper 1, Q4 (1 mark): Which structure is found in a typical bacterial cell? A intron B telomere C template strand D capsid
- June 2024, Paper 1, Q10 (1 mark): What is the correct order of locations in the cell for the production of an extracellular enzyme? A nucleus ribosome rough endoplasmic reticulum Golgi bod
- June 2024, Paper 2, Q1(b)(i) (3 marks): Complete Fig. 1.2 by drawing and labelling: • a mitochondrion • rough endoplasmic reticulum • smooth endoplasmic reticulum. Your drawings should show the detail
- June 2024, Paper 2, Q1(b)(ii) (2 marks): Identify the organelle labelled X and state one function of this organelle. name function [2] [Total: 10]
- June 2024, Paper 2, Q4(b)(i) (2 marks): The structures labelled X in Fig. 4.1 have a characteristic internal appearance, as seen in Fig. 4.2. Describe the internal appearance of the structures labelle
- June 2024, Paper 2, Q4(b)(ii) (1 mark): Explain how Fig. 4.2 shows that each of the structures labelled X are intracellular. [1]
- June 2024, Paper 2, Q4(c) (4 marks): Stem cells are found in the lining of the bronchi. Describe the function of centrioles and explain how they are involved in the cell cycle of a stem cell. [4] [
- Specimen, Paper 1, Q2 (1 mark): The electron micrograph shows part of two cells. W X Y Which labelled features identify these cells as eukaryotic? A W, X and Y B W and X only C W only D X only
- Specimen, Paper 1, Q5 (1 mark): Some secretory cells synthesise and release glycoproteins. What is the correct sequence of some of the events that occur in a secretory cell? 1 exocytosis 2 pro
- Specimen, Paper 1, Q6 (1 mark): A scientist used a blender to break open a sample of animal cells and release the organelles. The extracted mixture was spun in a centrifuge at a low speed. The
- Specimen, Paper 1, Q21 (1 mark): Bacterial cells divide by a process called binary fission. Which macromolecules must be synthesised for binary fission? 1 cell membrane proteins and RNA 2 DNA a
- Specimen, Paper 2, Q1(b) (2 marks): Both the Golgi body and the rough endoplasmic reticulum are part of the network of membranes inside cells. Outline structural features shown in Fig. 1.1 that id
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