MCQ-2: Gas Exchange in Humans
There are twenty questions in this quiz. Select the correct answer from the given choices.
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Question 1 of 10
1. Question1 point(s)
The diagram shows some structures in the human neck and thorax.
The lining of tube Q has cilia.
What is an important function of the cilia?CorrectIncorrect
Question 2 of 10
2. Question1 point(s)
The diagram shows the composition of four samples of air (O2 = oxygen, CO2 = carbon dioxide, N2 = nitrogen).
Which sample is inspired air and which sample is expired air?
inspired air expired air A K N B L K C M L D N MCorrectIncorrect
Question 3 of 10
3. Question1 point(s)
Which sequence of changes takes place when we breathe in?CorrectIncorrect
Question 4 of 10
4. Question1 point(s)
The table shows some of the changes that occur during breathing.
diaphragm P X external intercostals Q Y internal intercostals R Z
Which changes occur to cause inspiration?CorrectIncorrect
Question 5 of 10
5. Question1 point(s)
The diagrams show the depth and rate of breathing in a person at 12.00pm and 1.00pm.
What happens to the person’s breathing between 12.00 pm and 1.00pm?
A decreases decreases B decreases increases C increases decreases D increases increasesCorrectIncorrect
Question 6 of 10
6. Question1 point(s)
Which is a mechanical barrier to pathogens?CorrectIncorrect
Question 7 of 10
7. Question1 point(s)
As we breathe out, ……1…… is ……2…… through the lungs.
Which words correctly complete gaps 1 and 2?
1 2 A carbon dioxide excreted B carbon dioxide respired C oxygen excreted D oxygen respiredCorrectIncorrect
Question 8 of 10
8. Question1 point(s)
Which row shows the approximate percentage of gases in expired air?
A 12 9 B 4 16 C 24 24 D 27 20CorrectIncorrect
Question 9 of 10
9. Question1 point(s)
The diagram shows part of the human gas exchange system.
Which row identifies P, Q and R?
P Q R A alveolus wall capillary wall vein B bronchiole alveolus wall capillary C capillary layer of moisture bronchiole D alveolus wall bronchiole capillaryCorrectIncorrect
Question 10 of 10
10. Question1 point(s)
What is the sequence of structures through which a molecule of oxygen passes from the air to the blood of a person?
- alveolus wall