BREATHING AND RESPIRATION (II) biology MCQ’s questions answers

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BREATHING AND RESPIRATION (II)

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Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Alveoli surfactant is produced by

A	Kupffer's cells
B	Dust cells
C	Type I pneumocyte
D	Type II pneumocyte

Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The "mountain sickness" in persons climbing to high attitudes without the aid of oxygen cylinders is due to

A	lack of sufficient amount of haemoglobin
B	lack of sufficient amount of erythrocytes
C	arterial hypoxia
D	anaemic hypoxia

Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

If the length of trachea is extended to the length of two vertebrae in the linear position, to which thoracic vertebrae, the trachea is divided:

A	5th vertebrae
B	7th vertebrae.
C	12th vertebrae.
D	8th vertebrae.

Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Sound production in humans is controlled by

A	Pharynx
B	Larynx
C	Nares
D	Lungs

Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Assertion: CO₂ is carried in the plasma mainly as HCO₃^- ions.
Reason: Enzyme carbonic anhydrase of RBC catalyses the formation of HCO₃^- ions that enter the plasma.

A	Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B	Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
C	Assertion is true but Reason is false.
D	Both Assertion and Reason are false.

There are 5 questions to complete.

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