Question # 1

Point out the FALSE statement about respiration.

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Gases can easily pass through the walls of the alveoli

Gas exchange in lungs is very efficient because lungs provide large surface area

In emphysema, the walls of alveoli break and there is more surface area.

Dust particles can damage the lung by irritating the inner alveoli surface.

What type of blood vessels surrounds the alveoli?

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Artery

Arteriole

Capillary

Vein

The process of gaseous exchange involves.

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Break down of C-H bounds to yield energy.

Physical movements that take air ain and our of body

Getting oxygen from the air and removing carbon dioxide

Transport of oxygen by the blood to different parts of the body.

Main role to give out air form lungs is;

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Bronchus

Bronchi

Bronchiote

Diaphragm

When the "World no tobacco day" is celebrated?

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30 June

31 June

11 January

None of these

The percentage of oxygen from air which we inspired is:

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15 %

21%

25%

28%

Cartilage is absent in:

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larynx

trachea

bronchi

bronchioles

Which structure actively helps in taking the air out of lungs?

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Nasal cavity

Bronchus

Bronchiole

Diaphragm

The major cause of lungs cancer is:

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nicotine

smoking

viral infection

radiation

During exercise or other hard physical works the breathing rate may increase up to.

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30-40 times per minute

50-60 times per minute

60-70 times per minute

70-80 times per minute

Most of the gaseous exchange in a leaf occurs through:

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Stomata

General surface

Cuticle

Lenticels

Smoking may also lead to the cancers in:

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Kidneys and pancreas

Oral cavity and larynx

Breast and bladder

All of them

Amount of carbon dioxide in inspired air is:

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16%

0.04%

4%

None of these

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