Introduction to Respiration

Q.

C₆H₁₂O₆ + _____ → __CO₂ + __H₂O + Energy

Q. What is the percentage of oxygen in inhaled and exhaled air? [2 MARKS]

Q.

Which enzyme converts protein to amino acids?

Q. How fish breath in water ?

Q.

'Respiration is a vital function of the body'. Justify. [3 MARKS]

Q. What are the stages of respiration?

Q.

Describe the process of respiration in fish.

Q.

Name the substance that is oxidized in the body during respiration?

Q. State two similarities between aerobic and anaerobic respiration.

Q. Cutaneous respiration refers to:

1. Respiration through nose
2. Respiration through skin
3. Respiration through lungs
4. Respiration through stomata

Q. Which of the following enzymes is responsible for digesting fats?

1. Amylase
2. Trypsin
3. Bile
4. Lipase

Q.

What is the difference between cellular respiration and tissue respiration?

Q. Food is stored in the form of Glycogen. And the energy released bu break down of food is stored as ATP molecule. Is there any kind of relation between glycogen and ATP molecule..??Then whats the need to store food..??

Q.

What is the name given to the process of using absorbed food for producing energy?

Q.

Which of the following products are obtained by anaerobic respiration from yeast?

1. Carbon dioxide

2. Beer and wine

3. Alcohol

4. All of these

Q.

In the experiment to demonstrate that CO₂ is given out during respiration, why is KOH placed in the small test-tube in the flask containing germinating seeds?

1. To provide oxygen required by the seeds for respiration.

2. To absorb carbon dioxide and create partial vacuum in the flask.

3. To absorb water from the seeds to make them dry.

4. To make the air present in the flask alkaline.

Q.

List 4 channels through which heat is lost from the body.

Q.

What kind of respiration requires oxygen?

Q.

In case of lack of oxygen, pyruvate is converted into E, the build-up of which causes F. Identify E and F.

Q. What is BRANCHIAL respiration?

Q.

Name the process by which plant parts like roots, stems and leaves get the oxygen required for respiration.

Q.

The following experiment was set up to show that a gas is given out during respiration. But there was no rise in the level of water. This was because :

1. germinating seeds have not been kept under water in the flask

2. water is kept in the beaker instead of lime water

3. the cork on the flask is made of rubber

4. no substance is kept in the flask to absorb the gas given out by seeds

Q.

What is the substance that connects light reaction and dark reaction

Q.

Give an example of an anaerobe.

Q.

Explain the following:

Respiration in roots

Q.

The breakdown of private to give co2, water and energy takes place in which organelle. Options cytoplasm, mitochondria, chloroplast, nucleus.

Q.

Internal respiration may be defined as :
(a) breathing in and releasing of oxygen in the tissue
(b) the oxidation of food substances to release energy
(c) the building up (synthesis) of complex substances
(d) getting rid of carbon dixode that would accumulate in the tissues.

Q. how many times we breath in a day

Q. The energy-releasing process in which the substrate is oxidized without an external electron acceptor is called:

1. Photorespiration
2. Fermentation
3. Aerobic respiration
4. Glycolysis

Q. Identify the correct statement about respiration.

1. Without oxygen, cellular respiration is not possible in humans.
2. Pyruvate is produced only in the case of aerobic respiration.
3. Anaerobic respiration is possible in yeast and humans.
4. The energy produced during cellular respiration is stored as ATP.

1. 1, 2 & 3
2. 3 & 4
3. 1 & 4
4. 2 & 3