Breathing and Exchange of Gases Test 16

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Breathing and Exchange of Gases Test 16

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Question 1
1 / -0

How much $$CO_2$$ can be carried by 100 ml of blood?

A
20 ml

B
0.3 ml

C
3.7 ml

D
6.3 ml

Solution

Blood is the medium of transport for oxygen and carbon dioxide. About 97 per cent of oxygen is transported by RBCs in the blood.
The remaining 3 per cent of oxygen is carried in a dissolved state through the plasma.
Nearly, 20-25 per cent of carbon dioxide is transported by RBCs, whereas, 70 per cent of it is carried as bicarbonate. About 7 per cent of carbon dioxide is carried in a dissolved state through plasma. Every 100 ml of oxygenated blood can deliver around 5 ml of oxygen to the tissues under normal physiological conditions. Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO$$_{2}$$ to the alveoli.
Question 2
1 / -0

Frog cannot live without

A
Cutaneous respiration

B
Pulmonary respiration

C
Buccal respiration

D
All of the above

Solution

While the amphibian is completely submerged, respiration takes place through their skin. The skin has membrane pores through which gases diffuse between the blood vessels and their surroundings. Cutaneous respiration requires constant moisture. When the frog is out of the water, mucus glands in the skin keep the skin moist, which helps absorb dissolved oxygen from the air.
Question 3
1 / -0

One of the following is a difference between pulmonary respiration of frog and human.

A
Diaphragm and ribs play role in breathing

B
Lungs are respiratory organs

C
Respiration occurs due to pressure gradient

D
None

Solution

Frogs are the amphibians and humans are the terrestrial mammal. Due to different habitat there are differences in the respiratory systems. Firstly the humans breathe exclusively through their lungs, whereas frogs use their lungs only for a part of their respiratory process. Secondly, humans use their diaphragm muscle to contract the diaphragm but it is absent in frogs. Thus, the correct answer is option A.
Question 4
1 / -0

Asthma is a respiratory disease caused due to?

A
Infection of trachea

B
Infection of lungs

C
Bleeding in pleural cavity

D
Spasm in bronchial muscles

Solution

Asthma is caused due to inflammation of lungs and spasm in bronchial muscles. The peculiar symptoms of the disease are coughing, chest tightness, and shortness of breath. It is mainly caused due to environmental and genetic factor.
So, the correct answer is option D.
Question 5
1 / -0

Rate of respiration is directly affected by

A
$$CO_2$$ concentration

B
$$O_2$$ in trachea

C
Concentration of $$O_2$$

D
Diaphragm expansion
Solution
Solution :
The correct answer is option A .
The solution for the correct answer is
Rate of respiration is directly affected by the concentration of carbon dioxide.
Because carbon dioxide concentration is high then the respiratory rate is low.
The respiratory rate depends mainly on the concentration of carbon dioxide.
During the process of cellular respiration, carbon dioxide is released as a waste product.
This carbon dioxide can be used by photosynthesizing cells to form new carbohydrates
Question 6
1 / -0

Vocal cords are attached with

A
Cricoid

B
Arytenoid

C
Thyroid and arytenoid

D
None of the above

Solution

Larynx is present in the anterior part of trachea and is considered as modification of trachea. It is a box like structure composed of cartilages-thyroid, cricoid, arytenoid, and cartilage of santorini. The arytenoid cartilage are two in number, and composed of hyaline cartilage. These cartilage are broad in base and pointed on ends. One end of vocal cords is attached with arytenoid and other end is attached with thyroid cartilage.
Question 7
1 / -0

In rabbits, left and right lungs are divided into how many lobes?

A
4 right and 2 left lobes

B
2 right and 3 left lobes

C
2 right and 2 left lobes

D
None of the above

Solution

Lungs are the organs for breathing and exchange of gases in terrestrial animals like mammals. In human beings right lung is made up of 3 lobes and left lung is made up of 2 lobes. The right lung of rabbit is made up of 4 lobes and the left lung is made up of 2 lobes.
Question 8
1 / -0

Volume of air inspired or expired with each normal breath is known as

A
Inspiratory capacity

B
Total lung capacity

C
Tidal volume

D
Residual volume

Solution

Tidal volume is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young adult, tidal volume is approximately 500 mL per inspiration.
Therefore, the correct answer is option C.
Question 9
1 / -0

Which of the following is not a respiratory organ in rabbit?

A
Nasal chamber

B
Oesophagus

C
Pharynx

D
Trachea

Solution

In mammals, oesophagus is part of alimentary canal. Oesophagus is a simple uniform tube, which runs downward and pierces the diaphragm and finally reaches into stomach. Digestive glands are absent and only mucous glands are present in oesophagus. The respiratory system comprises of nostrils, nasal chamber, internal nares, naso-pharynx, pharynx, glottis, larynx, trachea, primary, secondary and tertiary bronchi and terminal bronchioles and finally lung alveoli.
Question 10
1 / -0

Oxyhaemoglobin acts as

A
Alkali

B
Acid

C
Neutral

D
Buffer

Solution

The oxyhaemoglobin $${HbO_{2}}$$ of the erythrocytes is acidic in nature. The study of oxygen-haemoglobin dissociation curve and the effect on it due to change in pH and $${CO_{2}}$$ concentration, is a certain proof of acidic nature of oxyhaemoglobin.

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Breathing and Exchange of Gases Test 16

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Breathing and Exchange of Gases Test 16

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SHARING IS CARING

Question 1

20 ml

0.3 ml

3.7 ml

6.3 ml

Solution

Question 2

Cutaneous respiration

Pulmonary respiration

Buccal respiration

All of the above

Solution

Question 3

Diaphragm and ribs play role in breathing

Lungs are respiratory organs

Respiration occurs due to pressure gradient

None

Solution

Question 4

Infection of trachea

Infection of lungs

Bleeding in pleural cavity

Spasm in bronchial muscles

Solution

Question 5

$$CO_2$$ concentration

$$O_2$$ in trachea

Concentration of $$O_2$$

Diaphragm expansion

Solution

Question 6

Cricoid

Arytenoid

Thyroid and arytenoid

None of the above

Solution

Question 7

4 right and 2 left lobes

2 right and 3 left lobes

2 right and 2 left lobes

None of the above

Solution

Question 8

Inspiratory capacity

Total lung capacity

Tidal volume

Residual volume

Solution

Question 9

Nasal chamber

Oesophagus

Pharynx

Trachea

Solution

Question 10

Alkali

Acid

Neutral

Buffer

Solution

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