Introduction to Respiration

Q.

List the difference between respiration in plants and respiration in animals

Q.

explain why respiration is said to be the reverse of photosynthesis

Q.

What happens if cellular respiration stops?

Q.

In what cells does cellular respiration occur?

Q.

Does respiration release energy?

Q.

Define life processes. Name the essential life processes for the survival of a living organism.

Q.

The chemical process of breaking down glucose and releasing energy for carrying out life processes is called

1. Respiration

2. Breathing

3. Digestion

4. None of the above

Q.

Why does cellular respiration need oxygen?

Q. Which of the following is true about aerobic respiration?

1. It takes place in the presence of carbon dioxide.
2. It takes place in the presence of oxygen.
3. It does not facilitate the synthesis of energy.
4. The product of aerobic respiration in muscles is lactic acid.

Q.

The essential steps of respiration in plants and animals is the same.

1. True

2. False

Q. ___ is a chemical reaction where Oxygen is used to breakdown Glucose in order to generate energy, which is then used by the cell to function.

Q.

What process would you consider essential for maintaining life?

Q.

The breakdown of glucose in process of respiration is a multiple step process.

1. True

2. False

Q.

Which of the following is an essential life process for survival?

1. Circulation

2. Nutrition

3. Respiration

4. Reproduction

Q. Identify the relationship between oxygen and carbon dioxide in maintaining life processes.

1. We need $C{O}_2$ to breakdown glucose which produces oxygen as a by-product.

2. We need oxygen to break down glucose which produces $C{O}_2$ as a by-product.

3. We need $C{O}_2$ to breakdown protein which produces oxygen as a by-product.

4. We need oxygen to breakdown protein which produces $C{O}_2$ as a by-product.

Q.
Identify the processes A and B in the image given above.

1. A-Photosynthesis; B-Respiration
2. A-Combustion; B-Respiration
3. A-Transpiration; B-Photosynthesis
4. A-Respiration; B-Transpiration

Q. Aquatic animals breathe at a slower rate than the terrestrial animals.

1. True
2. False

Q.

why is it usually difficult to demonstrate respiration in green plants

Q. With regard to the respiratory system and the process of respiration, answer the following questions:

(a) Name the two muscles that help in breathing.

(b) Briefly describe how the above mentioned muscles help in the inspiration of air.

(c) What is meant by :

1. Residual air
2. Dead air space. [6 marks]

Q.

Which of the following is not an essential life process?

1. Circulation

2. Nutrition

3. Respiration

4. Reproduction

Q.

An athlete breathes faster and deeper than usual after finishing the race.

1. False

2. True

Q. Do plants use co2 generated during their respiration for photosynthesis??

Q. Water vapour is released during inhalation.

1. False
2. True

Q. The process of respiration and photosynthesis are to each other.

1. similar
2. opposite
3. complementary

Q. Breakdown of glucose molecule into pyruvate takes place in which organelle?

1. Mitochondria
2. Vacuole
3. Nucleus
4. Cytoplasm

Q.

Which of the following statements is true?

1. Less heat is produced during respiration in plants than animals.

2. Less heat is produced during respiration in animals than plants.

3. There is no gaseous transport in animals.

4. Ethanol is the end-product of respiration in animals.

Q. Why do we need to exchange oxygen and carbon dioxide?

1. We need oxygen to breakdown glucose, of which $C{O}_2$ is a by-product.
2. We need $C{O}_2$ to breakdown glucose, of which oxygen is a by-product.
3. We need $C{O}_2$ to breathe and produce oxygen as a byproduct of digestion.
4. We need oxygen to breathe and produce $C{O}_2$ as a byproduct of digestion.

Q. Common phase between aerobic and anaerobic modes of respiration is

1. Krebs cycle
2. EMP/glycolysis
3. Oxidative phosphorylation
4. Pentose phosphate pathway

Q. Exchange of gases between the blood and the tissues of the body takes place by .

1. osmosis
2. diffusion
3. active transport
4. absorption

Q. With regard to the respiratory system and the process of respiration in man, answer the following questions:
Give the overall chemical equation to represent the process of respiration in humans.