Respiration : Biology MCQ Practice Questions & Answers (English)

BiologyEasyRespiration

1.

The Bronchial tree is connected with the brain by

A

Trigeminal nerve

B

Phrenic nerve

C

Vagus nerve

D

Trochlear nerve

BiologyEasyRespiration

2.

Hering Breur Reflex serves as a protective mechanism to prevent

A

Excess lung inflation

B

Excess oxygenation

C

All these

D

Tracheal collapsing

BiologyEasyRespiration

3.

The chief difference between Trachea and Bronchioles is

A

Trachea lacks cartilage

B

Bronchiole lacks cartilage

C

Trachea is long

D

Bronchiole is small

BiologyEasyRespiration

4.

At high altitude, the number of RBC increases

A

To trap $O_2$ from rarefied air having low $PO_2$

B

To adapt with the oxygen deficiency

C

To remove more $CO_2$

D

To increase metabolism

BiologyEasyRespiration

5.

Bohr effect shifts the $O_2$ – Hb dissociation curve to right

A

To promote oxygenation of Hb in lungs

B

To increase $O_2$ concentration

C

To decrease $CO_2$ concentration

D

To decrease the pH of blood

BiologyEasyRespiration

6.

Spirometry is used

A

To detect the amount of Hemoglobin

B

To detect the air flow through the respiratory system

C

To check the respiratory quotient

D

None of these

BiologyEasyRespiration

7.

Pulmonary ventilation is

A

Tidal volume + Respiratory rate

B

Tidal volume + Vital capacity

C

Tidal volume + Residual volume

D

Tidal volume + Inspiratory reserve volume

BiologyEasyRespiration

8.

Cloacal respiration is found in

A

Snake

B

Turtle and Tortoise

C

Crocodile

D

Frog

BiologyEasyRespiration

9.

Myoglobin is a muscle hemoglobin which exhibits Hyperbolic oxygen dissociation curve indicating its great affinity towards Oxygen ( Non cooperative binding ). The Hyperbolic nature of the curve is due to

A

Single polypeptide ( 153 amino acids ) and Monomeric nature

B

High concentration in the muscle

C

Muscle protein

D

Quarternary structure

BiologyEasyRespiration

10.

Which one is a Non – reversible pulmonary disease in which the bronchi are blocked with mucous and infection and rupture of alveoli

A

Silicosis

B

Asphyxia

C

Emphysema

D

Embolism

BiologyEasyRespiration

11.

Advantage of Double Bohr effect is

A

Reciprocal exchange of Oxygen for Carbon dioxide

B

More Oxygenation of Foetal blood

C

More removal of Carbon dioxide

D

All these

BiologyEasyRespiration

12.

Tachypnoea means

A

Rapid shallow breathing

B

Rapid deep breathing

C

Slow and shallow breathing

D

Slow and deep breathing

BiologyEasyRespiration

13.

Carbonic anhydrase in the RBC is the fastest enzyme and it decompose in one second for fast action. Its concentration in the blood due to the presence of

A

Plasma

B

Carbon dioxide

C

Sodium ions

D

Hemoglobin

BiologyEasyRespiration

14.

The common drugs used against TB is

A

Para amino salicylic acid ( PAS )

B

Ethambutol

C

Steptomycin

D

All these

BiologyEasyRespiration

15.

Oxygen dissociation curve shows the relation between

A

Oxyhemoglobin saturation and Oxygen tension

B

Oxyhemoglobin saturation and Carbon dioxide level

C

Oxyhemoglobin formation and dissociation

D

Partial pressure of Oxygen and Partial pressure of Carbon dioxide

BiologyEasyRespiration

16.

Which of the following gas mixture is used by Divers to prevent Oxygen toxicity

A

Oxygen and $CO_2$

B

Oxygen and Nitrogen

C

Oxygen and rare gases

D

Oxygen, $CO_2$ and Nitrogen

BiologyEasyRespiration

17.

The Alveolar epithelium is lined with

A

Non- ciliated Squamous epithelium

B

Ciliated Squamous epithelium

C

Ciliated epithelium

D

Ciliated Columnar epithelium

BiologyEasyRespiration

18.

The impulse for voluntary muscles for forceful breathing starts in

A

Spinal cord

B

Medulla ( Pons )

C

Vagus nerve

D

Cerebral hemispheres

BiologyEasyRespiration

19.

In which part of the body Mycobacterium tuberculosis affects

A

All these

B

Lungs

C

Skin and Meninges

D

Intestine

BiologyEasyRespiration

20.

Opercular gills are found in

A

Both a and b

B

Lepidosteus

C

Polypterus

D

Anabas

Respiration in Biology : Practice MCQ Questions & Answers with Explanations