Cellular Respiration

Q. What is the process during which the food is oxidised and energy is released?

Q.

Why do organisms/cells need oxygen?

1. To break down food and release energy

2. To convert water into usable form

3. To destroy dead cells

4. To store energy in the form of food

Q.

How does cellular respiration affect humans?

Q. Where is glucose broken down to obtain energy?

1. Outside cells

2. Cells

3. Nucleus

4. Outside the body

Q. Which of the following is true about glycolysis?

1. Glycolysis takes place in the mitochondria.
2. Glycolysis is the last step in aerobic respiration.
3. One glucose molecule is broken down to 3 pyruvic acid molecules.
4. Glycolysis is a anaerobic process.

Q. The process of breakdown of food in the cell with the release of energy is:

1. Cellular precipitation
2. Cellular respiration
3. Cellular breakdown
4. Cellular sedimentation

Q.

The exchange of oxygen and other gases between the air in the lungs and blood vessels takes place in the ___.

1. pharynx

2. diaphragm

3. trachea

4. alveoli

Q.

The process of synthesis of digested food to obtain energy in the presence of oxygen is known as respiration.

1. True
2. False

Q.

Break down of glucose in the cells is a chemical change.

1. True

2. False

Q. Choose the changes that take place during inhalation.

1. Diaphragm moves down
2. Ribs expand
3. Lungs contract
4. Air moves inside the lungs

Q.

The food that is usually utilised by the cells is in the form of

1. amino acids

2. glucose

3. proteins

4. fats

Q. Which among the following statements are true?

1. During inhalation, chest width increases.
2. During exhalation, chest width decreases.
3. During exhalation, chest width increases.
4. During inhalation, chest width decreases.

Q.

Give a reason for the following statement.

Respiration is an exothermic change.

Q. List some uses of oxygen.

Q.

The energy currency used by cells is ________.

1. adenosine

2. ATP

3. ADP

4. AMP

Q. Which among the following is the correct statement for breathing?

1. Physical process
2. Cannot be controlled
3. Breakdown of glucose
4. Takes place inside the cells

Q.

The transfer of oxygen between air in the lungs and blood vessels takes place at the

1. Alveoli

2. Pharynx

3. Diaphragm

4. Trachea

Q.

Why is it usually difficult to demonstrate respiration in green plants?

Q.

Statement 1: Diaphragm is a muscular wall.
Statement 2: Diaphragm separates the thoracic and abdominal cavities.

1. Both the statements are false
2. Statement 1 is false and statement 2 is true
3. Both the statements are true
4. Statement 1 is true and statement 2 is false

Q.

Ribs move upwards and outwards when we-

1. digestion

2. inhale

3. exhale

4. defecate

Q. In animals, the process in which glucose is converted into energy is .

Q. What factors are most likely to affect the breathing rate?

Q. Write a short note on phases of respiration.