Curriculum
Course: IAL Edexcel Linear
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Curriculum

IAL Edexcel Linear

Unit 1: Lifestyle, Transport, Genes and Health

0/36 Dr Dabour Hub Science Diagram and Course Material

Unit 2: Cells, Development, Biodiversity and Conservation

0/34 Dr Dabour Hub Science Diagram and Course Material

Unit 3: Practical Skills in Biology I

0/31 Dr Dabour Hub Science Diagram and Course Material

Unit 4: Energy, Environment, Microbiology and Immunity

0/34 Dr Dabour Hub Science Diagram and Course Material

Unit 5: Respiration, Internal Environment, Coordination and Gene Technology

0/42 Dr Dabour Hub Science Diagram and Course Material

Unit 6: Practical Skills in Biology II

0/51 Dr Dabour Hub Science Diagram and Course Material
Quiz

Exercise – Check yourself

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Exercise IAL Modular Biology check yourself quiz: free practice for IAL Edexcel Modular. Work through this Exercise IAL Modular Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 5.3 Exercise — IAL Biology Notes lesson. More practice: IAL Edexcel Modular — all units. Syllabus: Pearson Edexcel International A Levels.

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

Cardiac output is

tidal volume × breathing rate
stroke volume × heart rate
blood pressure × heart rate
stroke volume ÷ heart rate
2.

Minute ventilation is

tidal volume × breathing rate
vital capacity × heart rate
stroke volume × breathing rate
tidal volume ÷ breathing rate
3.

The heart is described as myogenic because

it contracts without needing nervous stimulation
it has no muscle
it is controlled by hormones only
it needs the brain to beat
4.

The atrioventricular node

starts the heartbeat
pumps blood
delays the impulse so the atria finish contracting before the ventricles contract
closes valves
5.

During exercise, heart rate increases because

the vagus nerve is stimulated
the cardiovascular control centre sends impulses along the sympathetic nerve to the SAN
CO₂ falls
blood pH rises
6.

Ventilation rate increases in exercise in response to

a rise in carbon dioxide concentration and a fall in blood pH
a fall in carbon dioxide
a rise in oxygen
a fall in temperature
7.

On an ECG, the QRS complex represents

atrial depolarisation
ventricular repolarisation
atrial repolarisation
ventricular depolarisation
8.

A spirometer trace can be used to measure

blood pressure
cardiac output
tidal volume, breathing rate and oxygen consumption
heart rate
9.

Too little exercise increases the risk of

wear and tear on joints
obesity, coronary heart disease and type 2 diabetes
suppressed immunity from overtraining
none of these
10.

Keyhole (arthroscopic) surgery benefits athletes because

it replaces the whole joint
it needs no surgery
it lengthens recovery
it uses small incisions, so recovery is faster
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Part of Unit 5: Respiration, Internal Environment, Coordination and Gene Technology — see every lesson and quiz in this unit.
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