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2.2 Animal tissues, organs and organ systems

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Question 101
F

A red blood cell is a biconcave disc rather than a sphere of the same volume. Which statement explains the advantage of this shape?

[1]
A

It gives a larger volume to surface area ratio, so more haemoglobin fits inside

B

It gives a smaller surface area to volume ratio, so less oxygen is lost in transit

C

It gives a larger surface area to volume ratio, so oxygen diffuses in and out faster

D

It gives a smaller volume to surface area ratio, so the cell can bend more easily

Markscheme

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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