Breathing and Respiration / Breathing and Exchange of Gases: MCQs Test

NEET Breathing and Respiration Questions (MCQs) | Online MCQs test on Breathing and Exchange of Gases (Class 11) | Online MCQs Test no. 01

Human Respiratory System: MCQs Quiz - 1

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Question 1

Which of the following statements is true about Trachea in a respiratory system?

A	It functions as passages of air to each alveolus
B	It functions for sound production
C	It Acts as passage of air to bronchi
D	It Lowers the surface tension

Question 2

______ lies in front of esophagus.

A	Trachea
B	Glottis
C	Larynx
D	Epiglottis

Question 3

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

A	Membrane potential
B	Accumulation of K ions
C	Proton gradient
D	Accumulation of Na ions

Question 4

Cilia and mucous are found in ______.

A	Trachea
B	Glottis
C	Larynx
D	Epiglottis

Question 5

Dissociation curve shifts to the right when

A	CO₂ concentration decreases
B	CO₂ concentration increases
C	O₂ concentration decrease
D	CL⁻ concentration increase

Question 6

Due to breakdown and collapse of ______ lung tissue is destroyed.

A	eustachian tubes
B	bronchioles
C	alveoli
D	microtrachea

Question 7

During expiration the diaphragm becomes

A	Dome-shaped
B	Flattened
C	Normal
D	Oblique

Question 8

During pneumonia which of the following gets accumulated in lung tissue?

A	RBC
B	Fluid WBC
C	Blood
D	Plasma

Question 9

During swallowing of food, ______ is the opening covered by epiglottis.

A	trachea
B	glottis
C	larynx
D	epiglottis

Question 10

During which respiration, the respiratory pigment hemoglobin combines with oxygen in the lungs?

A	Aerobic cellular
B	External
C	Internal
D	Circulatory

Question 11

Each of the alveolar sac is surrounded by

A	capillaries
B	veins
C	arteries
D	primarily lymphatic ducts

Question 12

Enzyme carbonic anhydrase, in ______ speeds up the reaction.

A	Platelets
B	Leucocytes
C	Lymphocytes
D	RBCs

Question 13

Esophagus opens only during

A	speaking
B	exhaling
C	inhaling
D	swallowing

Question 14

Exchange of oxygen and carbon dioxide between alveolar air and blood is governed by _______.

A	diffusion
B	blood pressure
C	gravity
D	active transport

Question 15

Hamburger’s phenomenon is also called

A	Hydrogen shift
B	Bicarbonate shift
C	Chloride shift
D	Sodium shift

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Human Respiratory System: MCQs Quiz - 1

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