Breathing

Q.

Explain the process of respiration.

Q.

Is burping a sign of a heart attack?

Q.

The number of times a person breathes in a minute is known as:

1. Breathing rate

2. Respiring rate
3. Atmospheric rate
4. Inspiration rate

Q. The normal range of breathing rate per minute in an average adult person at rest is ______ .

1. 9 – 12

2. 12 – 20

3. 21 – 24
   

4. 30 – 33

Q.

Write the full form of BMR.

Q.

Name the end products of anaerobic respiration in yeast.

Q. Define diaphragm.

Q.

Why is transferred of material necessary in a plant or in an animal explain?

Q.

When air is blown from the mouth into a test tube containing lime water, the lime water turned milky due to the presence of

1. oxygen

2. carbon dioxide

3. nitrogen

4. water vapour

Q.

All living things breathe.

1. False

2. True

Q.

Write three differences between breathing and respiration? [3 MARKS]

Q.

Write an experiment to demonstrate that CO₂ is released during exhalation.

Q.

Why do we often sneeze when we inhale a lot of dust-laden air?

Q.

What will cause when food enters the windpipe?

Q.

During exhalation, the ribs
(i) move outwards
(ii) move downwards
(iii) move upwards
(iv) do not move at all

Q.

If you blow into a glass of limewater, what is the change in colour you can observe?

1. A white liquid turns colorless

2. There is no change of color to be expected

3. A white liquid turns pink

4. A colorless liquid turns murky white

Q.

What is breathing rate? What is the normal breathing rate for human beings? How does it vary? [3 MARKS]

Q.

Why does an athlete breathe faster and deeper than usual after finishing the race?

Q. What is meaning of carbamino haemoglobin

Q.

We should cover our mouth and nose while coughing and sneezing.

Q. Which part of the plant takes in carbon dioxide from the air for photosynthesis?

1. Root
2. Flower
3. Stomata
4. Fruit

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

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

Q.

Why do we all humans need to breathe ??

Q. What is breathing? What are the two steps in breathing? [2 MARKS]

Q.

The movement of air in and out of lungs is called _________

1. Breathing

2. Circulation

3. Excretion

4. Respiration

Q.

Which of the following defines inhalation in simple terms?

1. exhalation

2. inhalation

3. respiration

4. breathing

Q.

Explain the process of respiration in earthworm.

Q. In photosynthesis the waste product is

1. Carbon dioxide
2. Oxygen
3. Nitrogen
4. Sulphur dioxide

Q. The process by which oxygen is used to burn down food chemically and release energy in the body is known as:

1. Excretion
2. Breathing
3. Circulation
4. Respiration

Q.

What is the color of calcium carbonate?

1. Brown

2. Pink

3. White

4. Yellow