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2.1 Supplying the cell

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Question 11

A limp lettuce leaf is placed in pure water.

After a short time, the leaf becomes firm, but its cells do not burst.

Which statement explains this?

[1]
A

The vacuoles swell and press the cell contents against the rigid cellulose cell walls.

B

The cellulose cell walls absorb the water and swell, so they hold each cell firm.

C

The vacuoles shrink and pull the cell membranes away from the cellulose cell walls.

D

The cellulose cell walls stop water crossing the cell membranes into the vacuoles.

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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