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Course: Edexcel A Level Biology A (SNAB) 9BI0
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Edexcel A Level Biology A (SNAB) 9BI0

Topic 1 · Lifestyle, Health and Risk

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Topic 2 · Genes and Health

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Topic 3 · Voice of the Genome

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Topic 4 · Biodiversity and Natural Resources

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Topic 5 · On the Wild Side

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Topic 6 · Immunity, Infection and Forensics

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Topic 7 · Run for your Life

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Topic 8 · Grey Matter

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Quiz

1.2.3 Treatment of CVD – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
IGCSE Biology 9.3 Blood Vessels - Question 10
IGCSE Biology 9.3 Blood Vessels - Question 10
A
B
C
D
2.
The graph shows water uptake over a day. Why is it highest around midday?
Dr Dabour Hub Academy - figure 1
Stomata are open and warmth increases evaporation
Stomata are closed at midday
Phloem is fastest at noon
Roots stop working at night only
3.
IGCSE Biology 9.3 Blood Vessels - Question 14
IGCSE Biology 9.3 Blood Vessels - Question 14
A
B
C
D
4.
Which vessel has valves along its length?
Aorta
Capillary
Pulmonary artery
Vein
5.
Why does a potometer measure water uptake rather than exact transpiration?
Some absorbed water is used in photosynthesis or kept in cells
All water is used in the phloem
Potometers measure sugar
Transpiration uses no water
6.
IGCSE Biology 9.4 Blood - Question 1
IGCSE Biology 9.4 Blood - Question 1
A
B
C
D
7.
Stomata counts on leaf surfaces are shown. Which leaf surface loses most water, if other factors are equal?
Upper surface of leaf A
Upper surface of leaf B
Lower surface of leaf A
Lower surface of leaf B
8.
Using the transpiration table, why is water loss lowest in humid air?
Stomata are forced fully open
Humid air is colder
The water potential gradient between leaf and air is small
Xylem stops working
9.
IGCSE Biology 9.3 Blood Vessels - Question 11
IGCSE Biology 9.3 Blood Vessels - Question 11
A
B
C
D
10.
Cardiac output with SV 70 cm3 and HR 60 bpm:
130 cm3
4200 cm3 min-1
1.2 dm3
7000 cm3 min-1
11.
IGCSE Biology 9.3 Blood Vessels - Question 12
IGCSE Biology 9.3 Blood Vessels - Question 12
A
B
C
D
12.
IGCSE Biology 9.3 Blood Vessels - Question 1
IGCSE Biology 9.3 Blood Vessels - Question 1
A
B
C
D
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Part of Topic 1 · Lifestyle, Health and Risk — see every lesson and quiz in this unit.
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