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1.4 Transport across cell membranes

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Question 18
F

A student compares two processes.

Process P moves water through a partially permeable membrane from a dilute solution to a concentrated solution.

Process Q moves mineral ions into a cell where their concentration is already higher.

Which statement correctly identifies the processes and their energy requirements?

[1]
A

P is osmosis; Q is diffusion; neither requires energy from respiration

B

P is active transport; Q is diffusion; only P requires energy from respiration

C

P is diffusion; Q is osmosis; both require energy from respiration

D

P is osmosis; Q is active transport; only Q requires energy from respiration

Markscheme

1.4 Transport across cell membranes Questions

  1. GCSE
  2. /Biology
  3. /1.4 Transport across cell membranes

41 exam-style questions on Edexcel GCSE Biology 1.4 Transport across cell membranes, covering 1.4.1 Transport into and out of cells and 1.4.2 Percentage gain and loss in osmosis. Each one has a worked solution and a mark scheme showing where the marks go.

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