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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

1.2.11 Practical- Vitamin C Content – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
During ventricular systole the AV valves are:
Open
Partly open
Closed
Absent
2.
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
3.
Which statement best describes Cardiac output?
The pacemaker in the right atrium that initiates each heartbeat.
Volume of blood pumped by one ventricle per minute.
Build-up of fatty plaque (atheroma) in artery walls.
Blood passes through the heart twice per complete circuit: pulmonary and systemic.
4.
Which tissue transports water?
Xylem
Cambium
Phloem
Epidermis
5.
IGCSE Biology 9.3 Blood Vessels - Question 3
IGCSE Biology 9.3 Blood Vessels - Question 3
A
B
C
D
6.
Water moves from:
−200 kPa to −600 kPa
−600 kPa to −200 kPa
−400 kPa to 0 kPa
−500 kPa to −100 kPa
7.
IGCSE Biology 9.4 Blood - Question 1
IGCSE Biology 9.4 Blood - Question 1
A
B
C
D
8.
Why is the AVN delay important?
Lets atria empty before ventricles contract
Increases heart rate
Closes semilunar valves
Stops fibrillation
9.
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
10.
Why must the shoot be cut and fitted to the potometer under water?
To wash the leaves
To add sugar
To kill the shoot
To stop air entering the xylem and breaking the water column
11.
Which key term matches this description: "Breaking bonds by adding water."
Which key term matches this description: "Breaking bonds by adding water."
Hydrolysis
Peptide bond
Ester bond
Hydrogen bond
12.
Which vessel has valves along its length?
Aorta
Capillary
Pulmonary artery
Vein
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Part of Topic 1 · Lifestyle, Health and Risk — see every lesson and quiz in this unit.
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