JAMB and WAEC Biology questions

791 questions with answers and explanations. Tap an option to check yourself.

All topics Cell structure and organisation · 56 Cellular activities · 56 Co-ordination and control · 58 Ecology · 71 Evolution · 45 Excretion · 52 Growth · 45 Heredity and variation · 60 Nutrition · 64 Reproduction · 62 Respiration · 55 Support and movement · 50 Transport · 57 Variety of organisms · 60

Question 601· Respiration· JAMB
After vigorous exercise, a person continues to breathe deeply in order to
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Answer: C. supply oxygen to break down the lactic acid built up (repay the oxygen debt)
Explanation and discussion
Question 602· Respiration· JAMB
Compared with aerobic respiration, anaerobic respiration releases
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Answer: D. less energy per molecule of glucose
Explanation and discussion
Question 603· Respiration· WAEC
The gas that is used up during aerobic respiration is
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Answer: C. oxygen
Explanation and discussion
Question 604· Respiration· JAMB
The rate of breathing is mainly controlled by the concentration of
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Answer: D. carbon(IV) oxide in the blood
Explanation and discussion
Question 605· Respiration· JAMB
The respiratory quotient for the respiration of carbohydrates is
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Answer: C. 1.0
Explanation and discussion
Question 606· Respiration· WAEC
The breathing organ of a fish is the
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Answer: D. gill
Explanation and discussion
Question 607· Respiration· WAEC
The respiratory quotient (RQ) of carbohydrates is
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Answer: D. 1.0
Explanation and discussion
Question 608· Respiration· WAEC
When yeast ferments sugar in the absence of oxygen, the products are
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Answer: A. ethanol and carbon dioxide
Explanation and discussion
Question 609· Respiration· WAEC
The energy released in respiration is stored in the cell as
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Answer: C. ATP
Explanation and discussion
Question 610· Respiration· WAEC
The products of aerobic respiration are
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Answer: B. carbon dioxide, water and energy
Explanation and discussion
Question 611· Respiration· WAEC
Gaseous exchange in plants takes place through
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Answer: A. stomata and lenticels
Explanation and discussion
Question 612· Respiration· JAMB
The Krebs cycle of aerobic respiration takes place in the
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Answer: D. mitochondria
Explanation and discussion
Question 613· Respiration· WAEC
Alveoli are efficient for gaseous exchange because they
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Answer: D. are thin-walled, moist and richly supplied with capillaries
Explanation and discussion
Question 614· Respiration· JAMB
Glycolysis, the first stage of respiration, takes place in the
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Answer: C. cytoplasm
Explanation and discussion
Question 615· Respiration· WAEC
During exhalation, the intercostal muscles
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Answer: B. relax and the rib cage moves down and in
Explanation and discussion
Question 616· Respiration· JAMB
Glycolysis takes place in the
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Answer: A. cytoplasm
Explanation and discussion
Question 617· Respiration· JAMB
During exhalation in humans, the
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Answer: B. external intercostal muscles relax and the ribs move down
Explanation and discussion
Question 618· Respiration· WAEC
The tiny air sacs in the lungs where gases are exchanged are the
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Answer: B. alveoli
Explanation and discussion
Question 619· Respiration· WAEC
In insects, air enters the body through
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Answer: A. spiracles
Explanation and discussion
Question 620· Respiration· JAMB
The molecule that serves as the energy currency of the cell is
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Answer: C. ATP
Explanation and discussion

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JAMB and WAEC Biology questions

After vigorous exercise, a person continues to breathe deeply in order to

Compared with aerobic respiration, anaerobic respiration releases

The gas that is used up during aerobic respiration is

The rate of breathing is mainly controlled by the concentration of

The respiratory quotient for the respiration of carbohydrates is

The breathing organ of a fish is the

The respiratory quotient (RQ) of carbohydrates is

When yeast ferments sugar in the absence of oxygen, the products are

The energy released in respiration is stored in the cell as

The products of aerobic respiration are

Gaseous exchange in plants takes place through

The Krebs cycle of aerobic respiration takes place in the

Alveoli are efficient for gaseous exchange because they

Glycolysis, the first stage of respiration, takes place in the

During exhalation, the intercostal muscles

Glycolysis takes place in the

During exhalation in humans, the

The tiny air sacs in the lungs where gases are exchanged are the

In insects, air enters the body through

The molecule that serves as the energy currency of the cell is