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2.1 Supplying the cell

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Question 22
F

Oxygen moves from the air in the alveoli into the blood in the lung capillaries.

Which statement describes how oxygen moves into the blood?

[1]
A

By osmosis, from a high concentration to a low concentration

B

By active transport, from a high concentration to a low concentration

C

By diffusion, from a low concentration to a high concentration

D

By diffusion, from a high concentration to a low concentration

Markscheme

2.1 Supplying the cell Questions

  1. GCSE
  2. /Biology
  3. /2.1 Supplying the cell

194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.

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