11 Biology- 17: Breathing and Exchange of Gases: Online Test

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In breathing movements, air volume can be estimated by *

2 points

Stethoscope

Hygrometer

Sphignomanometer

Spirometer

The oxygen-haemoglobin dissociation curve will show a right shift in case of *

2 points

High Partial Pressure Carbon dioxide

High Partial Pressure Oxygen

Low Partial Pressure Oxygen

Less Hydrogen ion concentration

Two friends are eating together on a dining table. One of them suddenly starts coughing, while swallowing some food. This coughing would have been due to improper movement of *

2 points

diaphragm

neck

epiglottis

tongue

Majority of carbon dioxide produced in our body cells is transported to the lungs *

2 points

attached to haemoglobin

as carbonates

dissolved in the blood

as bicarbonates

Oxygen dissociation curve is *

2 points

hyperbolic

parabolic

straight line

sigmoid

During inspiration, the diaphragm

2 points

expands

shows no change

contracts and flattens

relaxes to become dome-shaped

Clear selection

After deep inspiration, capacity of maximum expiration of lungs, is called *

2 points

total lung capacity

functional residual capacity

vital capacity

inspiratory capacity

Lungs are inclosed in or the covering around the lungs is *

2 points

pericardium

pleural membrane

peritoneum

perichondrium

Amount of carbon dioxide in expired air is *

2 points

0.04%

0.03%

4.5%

2.1%

The partial pressure of oxygen in the alveolar air is *

2 points

45 mm Hg

95 mm Hg

104 mm Hg

110 mm Hg

Which one is the cofactor for carbonic anhydrase? *

2 points

Iron

Magnesium

Zinc

Copper

Dead space air in humans, is *

2 points

500 ml

250 ml

150 ml

1.5 l

How many molecules of oxygen can combine with one molecule of haemoglobin? *

2 points

One

Two

Three

Four

When carbon dioxide concentration of blood is increased, breathing becomes *

2 points

slow and deep

slow and shallow

faster and deep

unaffected

Hiccups can be best described as *

2 points

forceful sudden expiration

jerky incomplete inspiration

vibration of the palate during breathing

sign of indigestion

Severe Acute Respiratory Syndrome (SARS) *

2 points

is caused by a variant of Pneumococcus pneumoniae

is caused by a variant of the common cold virus (corona virus)

is an acute form of asthma

affects non-vegetarians much faster than vegetarians

The volume of inspired and expired air, during normal breathing, is called *

2 points

residual volume

tidal volume

inspiratory reserve volume

expiratory reserve volume

Which is called Hamburger shift? *

2 points

Hydrogen shift

Bicarbonate shift

chlorine shift

sodium shift

Residual volume is

2 points

less than tidal volume

greater than inspiratory volume

greater than tidal volume

greater than vital capacity

Clear selection

With maximum effort after inspiration, the maximum amount of air released out, is called *

2 points

total lung capacity

vital capacity

breathing capacity

tidal volume

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