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2.1 Supplying the cell

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Question 3

A wilted leaf is placed in pure water. After one hour, the leaf is firm and spread out.

Which statement describes and explains this change?

[1]
A

Water enters the leaf cells by diffusion, making them turgid so pressure from the cell membranes supports the leaf.

B

Water crosses the leaf cell walls but not the cell membranes, so the spaces around the cells become full.

C

Water enters the leaf cells by osmosis, making them turgid so pressure from the cells supports the leaf.

D

Water enters the leaf cells by active transport, making them turgid using energy released by respiration.

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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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