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2.2 The challenges of size

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Question 17
F

The concentration of mineral ions inside root hair cells is higher than the concentration in the soil water around them.

Which statement explains how root hair cells take up mineral ions from the soil?

[1]
A

By diffusion, because the ions move down a concentration gradient

B

By osmosis, because the ions move into a more dilute solution

C

By diffusion, because the cell membrane is partially permeable

D

By active transport, using energy released by respiration

Markscheme

2.2 The challenges of size Questions

  1. GCSE
  2. /Biology
  3. /2.2 The challenges of size

114 exam-style questions on OCR GCSE Biology 2.2 The challenges of size, covering 2.2.1 Exchange surfaces and surface area : volume ratio, 2.2.2 Substances transported in organisms, 2.2.3 The human circulatory system, 2.2.4 The heart and blood vessels, 2.2.5 Red blood cells and plasma, 2.2.6 Uptake of water and mineral ions by plants, 2.2.7 Transpiration and translocation, 2.2.8 Xylem and phloem, 2.2.9 Environmental factors and water uptake, and 2.2.10 Using a potometer. Each one has a worked solution and a mark scheme showing where the marks go.

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