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Cell division, cell diversity and cellular organisation

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Question 25

A student is reviewing the structural adaptations of specialized mammalian cells involved in transport and gas exchange.

Consider the following statements:

  1. Erythrocytes retain a high density of mitochondria during differentiation to provide the ATP required for the active transport of oxygen molecules.
  2. Neutrophils possess a multi-lobed nucleus and a highly flexible cytoskeleton, facilitating their movement through narrow gaps in capillary walls to reach sites of infection.
  3. Squamous epithelial cells are extremely thin and flat, forming a single-layered tissue that minimises the diffusion distance for respiratory gases in the alveoli.

Which of these statements correctly describe the adaptations of these specialised cells?

A

1, 2 and 3

B

Only 1 and 2

C

Only 2 and 3

D

Only 3

Markscheme

Cell division, cell diversity and cellular organisation Questions

  1. A Level
  2. /Biology
  3. /Cell division, cell diversity and cellular organisation

40 exam-style questions on OCR A A Level Biology Cell division, cell diversity and cellular organisation. Each one has a worked solution and a mark scheme showing where the marks go.

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