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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

5 · The Mitotic Cell Cycle

0/21

6 · Nucleic Acids and Protein Synthesis

0/22

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

9 · Gas Exchange

0/13

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/33

17-18 · Selection, Evolution, Classification and Conservation

0/70

19 · Genetic Technology

0/44
Quiz

8.2 Transport of Oxygen & Carbon Dioxide – Check yourself

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Transport of Oxygen & Carbon Dioxide Biology 9700 check yourself quiz: free practice for Cambridge AS & A Level Biology 9700. Work through this Transport of Oxygen & Carbon Dioxide Biology 9700 check yourself quiz and get instant feedback on every answer. If you get stuck, review the 8.2 Transport of Oxygen & Carbon Dioxide — 9700 Notes lesson. More practice: Cambridge AS & A Level Biology 9700 — all units. Syllabus: Cambridge AS & A Level Biology 9700 syllabus.

  • Questions count: 10
  • Passing grade: B
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1.

Each haemoglobin molecule can carry up to

one oxygen molecule
four oxygen molecules
two oxygen molecules
eight oxygen molecules
2.

The oxygen dissociation curve is sigmoid because

haemoglobin has one haem group
oxygen is insoluble
carbon dioxide blocks binding
binding of the first oxygen molecule makes it easier for the next to bind
3.

The Bohr effect is

the lowering of haemoglobin’s affinity for oxygen at high carbon dioxide concentration
the raising of affinity at high CO₂
the binding of CO to haemoglobin
the chloride shift
4.

Most carbon dioxide is transported in the blood as

carbaminohaemoglobin
dissolved gas
carbonic acid in red cells
hydrogencarbonate ions in the plasma
5.

Carbonic anhydrase in red blood cells catalyses

the breakdown of haemoglobin
the formation of oxyhaemoglobin
the chloride shift
CO₂ + H₂O ⇌ H₂CO₃
6.

The chloride shift is

the movement of chloride ions into red blood cells as hydrogencarbonate ions diffuse out
the loss of chloride from plasma to tissues
the binding of chloride to haem
the movement of sodium ions
7.

Haemoglobin acts as a buffer by

releasing hydrogen ions
binding hydrogen ions to form haemoglobinic acid
binding chloride
binding carbon dioxide only
8.

Fetal haemoglobin has

a lower affinity
the same affinity
a higher affinity for oxygen than adult haemoglobin
no haem
9.

At high altitude, the body adapts by

producing more red blood cells
producing fewer red blood cells
reducing breathing rate
reducing haemoglobin
10.

In the lungs, the high partial pressure of oxygen means haemoglobin is

unsaturated
almost fully saturated
releasing oxygen
denatured
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Part of 8 · Transport in Mammals — see every lesson and quiz in this unit.
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