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2.1 Supplying the cell

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Question 30

To efficiently supply oxygen to respiring tissue cells, the mammalian double circulatory system maintains distinct blood pressures and oxygenation states within its major vessels.

Which of the following options correctly describes both the oxygenation state and the relative pressure of the blood in the two specified vessels?

A

Pulmonary vein: oxygenated, low pressure; Aorta: oxygenated, high pressure

B

Pulmonary artery: oxygenated, high pressure; Vena cava: deoxygenated, low pressure

C

Pulmonary vein: deoxygenated, low pressure; Aorta: oxygenated, high pressure

D

Pulmonary artery: deoxygenated, low pressure; Vena cava: oxygenated, high pressure

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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