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

Respiration – Check yourself

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Respiration IAL Modular Biology check yourself quiz: free practice for IAL Edexcel Modular. Work through this Respiration IAL Modular Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 5.2 Respiration — IAL Biology Notes lesson. More practice: IAL Edexcel Modular — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 29
  • Passing grade: B
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1.

Glycolysis produces, per glucose,

6 CO₂
2 pyruvate, a net gain of 2 ATP and 2 reduced NAD
36 ATP
2 lactate only
2.

The link reaction and Krebs cycle take place in the

cytoplasm
inner membrane
mitochondrial matrix
intermembrane space
3.

The Krebs cycle produces, per turn,

oxygen
CO₂, ATP, reduced NAD and reduced FAD
glucose
lactate
4.

Most ATP in aerobic respiration is produced by

glycolysis
the link reaction
the Krebs cycle directly
oxidative phosphorylation
5.

The role of oxygen in aerobic respiration is to

oxidise glucose directly
make carbon dioxide
phosphorylate ADP
act as the final electron acceptor, forming water
6.

Chemiosmosis involves

the diffusion of H⁺ through ATP synthase down an electrochemical gradient
active transport of ATP
diffusion of oxygen
movement of electrons through ATP synthase
7.

In anaerobic respiration in animals, pyruvate is

oxidised to CO₂
converted to ethanol
reduced to lactate, regenerating NAD
converted to glucose
8.

Lactate after exercise is

excreted in urine
stored in muscle permanently
converted back to pyruvate and oxidised, or converted to glycogen in the liver
converted to fat
9.

A respirometer measures

the rate of photosynthesis
heart rate
ATP directly
the rate of oxygen uptake
10.

Respiration is a many-stepped process because

each step is controlled by a specific intracellular enzyme, releasing energy in small amounts
it is slow
it needs light
glucose is unstable
11.
IGCSE Biology 12.1 Respiration - Question 1
IGCSE Biology 12.1 Respiration - Question 1
A
B
C
D
12.
IGCSE Biology 12.1 Respiration - Question 2
IGCSE Biology 12.1 Respiration - Question 2
A
B
C
D
13.
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 1
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 1
A
B
C
D
14.
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 2
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 2
A
B
C
D
15.
IGCSE Biology 12.4 Anaerobic respiration, LACTIC ACID - Question 1
IGCSE Biology 12.4 Anaerobic respiration, LACTIC ACID - Question 1
A
B
C
D
16.
IGCSE Biology 12.4 Anaerobic respiration, LACTIC ACID - Question 3
IGCSE Biology 12.4 Anaerobic respiration, LACTIC ACID - Question 3
A
B
C
D
17.
Which key term matches this description: "Electron carriers."
Which key term matches this description: "Electron carriers."
Oxidative phosphorylation
NADH / FADH₂
Final electron acceptor
Krebs cycle
18.
According to the comparison table in this lesson, what is the Input of Krebs cycle?
According to the comparison table in this lesson, what is the Input of Krebs cycle?
Stages of cellular respiration
2 pyruvate
2 acetyl-CoA
Glucose
NADH, FADH₂, O₂
19.
Which statement best describes NADH / FADH₂?
Which statement best describes NADH / FADH₂?
Inner membrane; creates H⁺ gradient.
Electron carriers.
ATP made by ATP synthase using H⁺ gradient.
Oxygen, forming water.
20.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
NADH/FADH₂
Glucose
ATP + H₂O
Acetyl-CoA
21.
Which statement best describes Oxidative phosphorylation?
Which statement best describes Oxidative phosphorylation?
Oxygen, forming water.
ATP made by ATP synthase using H⁺ gradient.
Regenerates NAD⁺ without oxygen.
Glucose → 2 pyruvate in cytoplasm; net 2 ATP.
22.
In the sequence covered in this lesson, which step comes immediately after Krebs cycle?
In the sequence covered in this lesson, which step comes immediately after Krebs cycle?
ATP + H₂O
NADH/FADH₂
Pyruvate
ETC
23.
According to the comparison table in this lesson, what is the Output of Krebs cycle?
According to the comparison table in this lesson, what is the Output of Krebs cycle?
Stages of cellular respiration
4 CO₂, 6 NADH, 2 FADH₂
Lactate or ethanol + CO₂, NAD⁺
H₂O
2 acetyl-CoA, 2 CO₂, 2 NADH
24.
Which statement best describes Krebs cycle?
Which statement best describes Krebs cycle?
In matrix; makes NADH, FADH₂, CO₂, ATP.
Pyruvate → acetyl-CoA + CO₂.
Oxygen, forming water.
Electron carriers.
25.
According to the comparison table in this lesson, what is the Input of ETC + chemiosmosis?
According to the comparison table in this lesson, what is the Input of ETC + chemiosmosis?
Stages of cellular respiration
Glucose
2 acetyl-CoA
NADH, FADH₂, O₂
2 pyruvate
26.
Which key term matches this description: "Glucose → 2 pyruvate in cytoplasm; net 2 ATP."
Which key term matches this description: "Glucose → 2 pyruvate in cytoplasm; net 2 ATP."
Pyruvate oxidation
Electron transport chain
Glycolysis
NADH / FADH₂
27.
Which statement best describes Electron transport chain?
Which statement best describes Electron transport chain?
ATP made by ATP synthase using H⁺ gradient.
Inner membrane; creates H⁺ gradient.
Pyruvate → acetyl-CoA + CO₂.
Electron carriers.
28.
According to the comparison table in this lesson, what is the Output of Pyruvate oxidation?
According to the comparison table in this lesson, what is the Output of Pyruvate oxidation?
Stages of cellular respiration
Lactate or ethanol + CO₂, NAD⁺
2 acetyl-CoA, 2 CO₂, 2 NADH
4 CO₂, 6 NADH, 2 FADH₂
2 pyruvate, 2 NADH
29.
Complete the statement: Most ATP is made by ______.
Complete the statement: Most ATP is made by ______.
Electron transport chain
oxidative phosphorylation
Fermentation
Final electron acceptor
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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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