Breathing and Exchange of Gases MCQs | Breathing and Exchange of Gases Short Questions with Answers

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Questions
1 Ascent of high mountains may cause altitude sickness in men. Prime cause for this is _______
A Decreased proportion of oxygen in the air
B Decreased partial pressure of oxygen
C Decreased efficiency of hemoglobin
D Excess CO2 in blood

Answer:Decreased partial pressure of oxygen
2 Increased asthmatic attacks in certain seasons are related to ________
A Low temperatures
B Inhalation of seasonal pollens
C Eating fruits preserved in containers
D Hot and humid environment

Answer:Inhalation of seasonal pollens
3 Which of the following is a disorder in which cell division takes place without any control and causes tumor?
A Bronchi cancer
B Bronchioles cancer
C Lung cancer
D Emphysema

Answer: Lung cancer
4 Strep throat is a viral infection.
A True
B False

Answer:False
5 Tuberculosis cannot be treated by antibiotics.
A True
B False

Answer: True
6 Respiration is helpful in
A Removing waste from the body
B Producing energy within the body
C Production of proteins
D Production of carbohydrates

Answer: Producing energy within the body
7 The surface, from which the exchange of gas takes place is called
A PPlasma surfaceGA
B Respiratory substrates
C Respiration surface
D Gaseous surface

Answer: Respiration surface
8 Which of the following shows pulmonary respiration
A Sponge
B Fishes
C Coelenterate
D Human

Answer:Human
9 What is the upper region of pharynx called?
A Oropharynx
B Nasopharynx
C Laryngopharynx
D None of these

Answer: Nasopharynx
10 The trachea is supported by,cartilaginous rings,which are…………shaped
A C
B L
C O
D S

Answer: C
11 A lung contains many small balloon like air sacs called
A gas spaces
B alveoli
C bronchi
D bronchioles

Answer: alveoli
12 Intercoastal muscles regulate the movement of
A ribs
B trachea
C diaphragm
D pharynx

Answer: ribs
13 Respiratory control centres are located in
A lungs
B medulla oblongata
C spinal cord
D ribs

Answer: medulla oblongata
14 The deoxygenated blood from heart comes to the lungs by
A pulmonary artery
B pulmonary vein
C bronchial artery
D renal vein

Answer: pulmonary artery
15 The metal ion present in haemoglobin is
A iron
B magnesium
C copper
D zinc

Answer: iron
16 How much fraction of oxygen is transported to tissues through RBCs?
A 100%
B 56%
C 45%
D 97%

Answer: 97%
17 H2CO3 is converted into CO2 and H2O with the help of an enzyme known as
A carboxylase
B carbonicenhydrase
C carbonic anhydrase
D carbonic dehydrogenase

Answer: carbonic anhydrase
18 The largest amount of CO2 is transported in blood as
A carbamino compounds
B bicarbonates
C carbonic acid
D carbonate ions

Answer:bicarbonates
19 Chloride back-shiftis associated with the transport of
A carbamino
B CO2
C oxygen
D water

Answer: oxygen
20 Bronchitis is a
A bacterial infection
B viral infection
C protozoan infection
D fungal infection

Answer: bacterial infection

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