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1.1 Cell structure

1.1 Cell structure

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Question 50
F

A red blood cell is a specialised cell. A red blood cell has no nucleus.

a.

A red blood cell cannot divide.

Suggest why a red blood cell cannot divide.

[1]
b.

The red blood cells in a person's body are replaced about every 120 days. New red blood cells are produced from unspecialised cells in the bone marrow.

Describe how the unspecialised cells in the bone marrow produce new red blood cells.

[3]
c.

An adult human still contains some unspecialised cells.

Explain why this does not disagree with the statement 'most types of animal cell differentiate at an early stage'.

[2]
Markscheme

1.1 Cell structure Questions

  1. GCSE
  2. /Biology
  3. /1.1 Cell structure

163 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.

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