Breathing

Q.

Explain the mechanism of breathing with neat labelled sketches.

Q. Carbonic anhydrase is found in:

1. Blood
2. Plasma
3. Gastric mucosa
4. All of the above

Q. In the given diagram, what A, B and C depicts?

1. A-Air goes inside to lungs, B-Ribs and sternum returned to original, position, C-Diaphragm contracted
2. A-Air expelled from lungs, B-Ribs and sternum returned to original position, C-Diaphragm relaxed and arched upward
3. A-Air expelled from lungs, B-Ribs and sternum goes upward, C-Diaphragm relaxed and arched upward
4. A-Air goes inside to lungs, B-Ribs and sternum goes upward, C-Diaphragm relaxed and arched upward

Q.

What Is Involuntary Respiration?

Q.

which of the following is not a function of conducting zone of respiratory tract

a. conduction of air

b. clears the air of foreign particles

c. humidification of air

d. gaseous exchange

Q. Pyruvic acid is the end product of glycolysis. What are the three metabolic products of pyruvic acid produced under aerobic and anaerobic conditions? Write their name in the space provided in the diagram.

Q. Humans are dependent on the air for

1. Circulation
2. All of the above
   
3. Nutrition
4. Respiration
   

Q.

Which of the following does not occur during breathing ?

(a) Brings the air to body temperature

(b) Warms up the air

(c) Diffusion of gases

(d) Cleans up the air

Q.

What is the physiology of breathing?

Q.

Which of the following are the stages of respiration in the correct order?

1. breathing, tissue respiration, cellular respiration and gaseous transport

2. breathing, gaseous transport, tissue respiration and cellular respiration

3. gaseous transport, breathing, tissue respiration and cellular respiration

4. breathing, gaseous transport, cellular respiration and tissue respiration

Q.

the breathing rate in a adult humans is

Q. In the following flow chart, replace the symbols a, b, c and d with appropriate terms. Briefly explain the process and give any two application of it.

Q. Energy is released during the oxidation of compounds in respiration. How is this energy stored and released as and when it is needed?

Q. The product of glycolysis (under hypoxia) in skeletal muscle and anaerobic fermentation in yeast are respectively and

Q. Comment on the statement – Respiration is an energy producing process but $ATP$ is being used in some steps of the process.

Q. Assertion - Difference in the partial pressure of a gas between two systems creates pressure gradient.
Reason - Gas moves from a region of high pressure to the region of low pressure.

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. The assertion is true but the reason is false
4. Both the assertion and reason are false

Q. Respiration requires $O_2$. How did the first cells on the earth manage to survive in an atmosphere that lacked$O_2$?

Q.

Which of the choices below determines the direction of respiratory gas movement?

1. solubility in water

2. partial pressure gradient

3. the temperature

4. molecular weight and size of the gas molecule

Q. The product of aerobic respiration of glucose is :

1. $C{O}_2+H_{2}O+\text{ATP}$
2. $C{O}_2+\text{ethyl alcohol}$
3. $C{O}_2+\text{Pyruvic acid}$
4. $C{O}_2+\text{Pyruvic acid}+\text{citric acid}$

Q.
A process is occurring throughout the day, in ‘X’ organism. Cells are participating in this process. During this process ATP, $C{O}_2$ and water are evolved. It is not a light dependent process.
a. Name the process.
b. Is it a catabolic or an anabolic process?
c. What could be the raw material of this process?

Q. A human being normally breathes ___ times per minute.

1. 40
2. 12
3. 72
4. 100

Q. Respiratory quotient (RQ) for fat tripalmitin is

1. 0.9
2. 1
3. 1.4
4. 0.7

Q.

Why do we yawn?

Q. Faster breathing in high fever is due to

1. mental stress of the patient
2. loss of appetite
3. high temperature of the body
4. excess oxygen requirement for the invading pathogens

Q. If a person is feeling dizzy, glucose or fruit juice is given immediately but not a cheese sandwich Explain

Q.

State whether true or false:
Respiration and breathing are synonymous.

1. Photosynthesis

2. Breathing

Q. Faster breathing in high fever is due to

1. mental stress of the patient
2. loss of appetite
3. high temperature of the body
4. excess oxygen requirement for the invading pathogens

Q. When $C{O}_2$ concentration in blood increases, breathing becomes

1. Slow and deep
2. Faster and deeper
3. Shallower and slow
4. There is no effect on breathing

Q. Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because:

1. There is a negative pressure in the lungs
2. Pressure in the lungs in higher than the atmospheric pressure
3. There is a positive intrapleural pressure
4. There is a negative intrapleural pressure pulling at the lung walls

Q. Combination of haemoglobin with $C{O}_2$ in lungs can be promoted by

1. Increasing $O_2$ concentration in blood
2. Decreasing $O_2$ concentration in blood
3. None of the above
4. Increasing $C{O}_2$ concentration in blood