Mechanism of Breathing

Q.

Explain the process of breathing in human beings.

Q.

What are the products formed by the given anaerobic respiration?

1. (A) Water, (B) Carbon dioxide

2. (A) Ethanol, Carbon dioxide (B) Alcohol

3. (A) Alcohol, Carbon dioxide (B) Lactic acid

4. (A) Lactic acid, Carbon dioxide (B) Alcohol

Q.

Given below are two statements:

Statement 1: The value of the parameter “Biochemical oxygen demand (BOD)” is important for survival of aquatic life.

Statement 2: The optimum value of BOD is $6.5\mathrm{ppm}$.

In the light of the above statements , choose the most appropriate answer from the given below.

1. Both statement 1 and 2 are false

2. Statement 1 is false but statement 2 is is true

3. Statement 1 is true but 2 is false

4. Statement 1 and statement 2 are true

Q. As a result of anaerobic respiration, lactic acid is produced by__________ cells.

1. muscle
2. Lactobacillus
3. muscle and lactobacillus
4. yeast

Q.

Arrange the following in the correct order to show the passage of air:

Bronchioles, bronchi, nose, larynx, alveoli, pharynx, lungs, trachea

Q. How do the following structures help in respiration in plants?​
(a) Lenticels……….

Q.

When the diaphragm tightens and moves __, inhalation occurs.

1. towards right

2. downwards

3. towards left

4. upwards

Q.

The process common to aerobic and anaerobic respiration is ______________.

1. Glycolysis

2. oxidation

3. kerb cycle

4. photosynthesis

Q.

What happens during gaseous exchange in the lungs?

1. Oxygen diffuses into the blood and carbon dioxide diffuses out of it.

2. Carbon dioxide diffuses into blood and oxygen diffuses into blood.

3. None of the above

4. Oxygen only diffuses

Q.

Cellular respiration starts in the _____.

1. cytoplasm

2. endoplasmic reticulum

3. golgi bodies

4. lysosomes

Q.

Identify the following parts of the labelled diagram :

1. 1. Nasal cavity 2. Pharynx 3. Lungs 4. Bronchi 5. Bronchioles 6. Diaphragm 7. Alveoli 8. Alveoli

2. 1. Nasal cavity 2. Trachea 3. Pharynx 4. Lungs 5. Bronchioles 6. Bronchi 7. Alveoli 8. Diaphragm

3. 1.Nasal cavity 2. Pharynx 3. Trachea 4. Lungs 5. Bronchi 6. Alveoli 7. Bronchiole 8. Diaphragm

4. 1. Nasal cavity 2. Pharynx 3. Trachea 4. Lungs 5. Bronchi 6. Bronchioles 7. Alveoli 8. Diaphragm

Q.

Atmospheric air rushes in through trachea into the lungs due to ___.

1. fall in pressure inside the lungs with decrease in the volume of the thoracic cavity

2. fall in pressure inside the lungs with increase in the volume of the thoracic cavity

3. increase in the pressure inside the lungs with increase in the volume of the thoracic cavity

4. increase in the pressure inside the lungs with decrease in the volume of the thoracic cavity

Q.

When yeast respires anaerobically, it produces:

1. carbon dioxide and ethanol

2. carbon dioxide and oxygen

3. ethanol and oxygen

4. methanol and oxygen

Q.

Explain how carbon monoxide acts as a poison and how an affected person should be treated.

Q. Which of these things happen when we inhale air?

1. The rib cage contracts
2. The diaphragm becomes flattened
3. The pressure of air inside the lungs is lowered
4. Air moves from higher pressure to lower pressure

Q.

What is the end-product of anaerobic respiration in animals?

1. Lactic acid

2. Ethanol

3. Glucose

4. Acetic acid

Q.

Identify the parts labeled in the diagram given below.

1. 1. Nasal cavity, 2. Pharynx, 3. Trachea

2. 1. Nasal cavity, 2. Pharynx, 3. Lungs

3. 1. Pharynx, 2. Trachea, 3. Bronchioles

4. 1. Nasal cavity, 2. Alveoli, 3. Trachea

Q. Note the following :
A It forms the lining of the cavities of alveoli of the lungs
B. It forms the lining of wet surfaces like buccal cavity and oesophagus
C. It occurs in the ducts of sweat glands
D. It forms the lining of salivary glands and sweat glands
E. It is a loose connective tissue

1. B and C
2. C and A
3. D and E
4. A and D

Q.

Select the option that best fills the missing gaps about inhalation and exhalation

$\begin{array}{ccc}& \text{Inhalation}& \text{Exhalation}\\ \text{Diaphragm}& \text{---(A)---}& \text{---(B)---}\\ \text{Intrapulmonary volume}& \text{---(C)---}& \text{Decreases}\\ \text{Intrapulmonary pressure}& \text{Decreases}& \text{---(D)---}\end{array}$

1. (A) Contracts, (B) Relaxes, (C) Increases, (D) Increases
2. (A) Contracts, (B) Relaxes, (C) Increases, (D) Decreases
3. (A) Relaxes, (B) Contracts, (C) Increases, (D) Increases
4. (A) Relaxes, (B) Contracts, (C) Decreases, (D) Increases

Q.

During inspiration air enters the lungs. Which of the following phenomena is observed during inspiration?

1. The ribs move away from the chest cavity and the diaphragm moves toward the abdominal cavity

2. The volume of the chest cavity decreases and the diaphragm moves toward the abdominal cavity

3. The ribs move away from the chest cavity and the diaphragm moves toward the chest cavity

4. The volume of the chest cavity decreases and the diaphragm moves toward the chest cavity

Q. Write True or False.​
Epithelial cells are supplied with blood vessels.​

Q.

____ is the volume of air we breathe in and out during normal breathing.

1. Inspiratory reserve volume plus expiratory reserve volume

2. Total lung capacity minus residual volume

3. Inspiratory reserve volume plus tidal volume

4. Total lung capacity minus expiratory reserve volume

Q. ............. is the maximum amount of air a person can expel from the lungs after a maximum inhalation.

1. Tidal air volume
2. Vital capacity
3. Complemental air volume
4. Total lung capacity

Q. During respiration, the exchange of gases takes place in:
(a) bronchi
(b) alveoli
(c) bronchioles
(d) trachea

Q. Differentiate between.
Tidal volume and residual volume

Q. Air moves into the lungs because

1. the thorax is muscular
2. contraction of the diaphragm decreases the volume of the pleural cavity
3. the volume of the lungs decreases with inspiration
4. the gas pressure in the lungs becomes lower than the outside pressure as the diaphragm contracts

Q. Epithelial cells with cilia are found in ...................... of our body.

1. Digestive tract
2. Respiratory tract
3. Urinary tract
4. None of the above

Q. The cellular respiration starts in the _____.

1. cytoplasm
2. golgi bodies
3. ER
4. lysosomes

Q. The children gulped down the food that their mother made them with grateful enthusiasm.
Choose the option that best corrects the sentence.

1. NO CHANGE
2. With grateful enthusiasm, the children gulped down the food that their mother made them.
3. The food that their mother made them with grateful enthusiasm was gulped down by the children.
4. The children gulped down the food, with grateful enthusiasm, that their mother made them.

Q.

write the function of respiratory system