Energy of the Muscles

Q.

The muscle fatigue occurs due to accumulation of:

1. Pyruvic acid

2. ATP

3. Lactic acid

4. Eroman CO₂

Q. The immediate source of energy is _________ for muscle contraction.

1. glycogen
2. lactic acid
3. phosphocreatine
4. ATP

Q. Assertion: Muscle contracts upon stimulation normally when it is relieved from muscle fatigue.
Reason: The vein which is taking away blood from the muscle transports accumulated lactic acid from the muscle to the liver.

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

Q. What is used as the first source of energy in the muscle fibres to sustain muscle contraction?

1. Anaerobic respiration
2. Aerobic respiration
3. Creatine phosphate
4. Sodium phosphate

Q. The immediate source of energy is _________ for muscle contraction.

1. ATP
2. lactic acid
3. phosphocreatine
4. glycogen

Q. The energy for contraction of muscles come from hydrolysis.

1. ADP
2. AMP
3. ATP
4. Pi

Q.

ATP in the muscles, is replenished in three ways. Which of the following is not one of them ?

1. From creatine phosphate (anaerobic)

2. By glycolysis from glycogen (anaerobic)

3. By cellular respiration (aerobic respiration)

4. Breakdown of protein

Q. Assertion: Muscle contracts upon stimulation normally when it is relieved from muscle fatigue.
Reason: The vein which is taking away blood from the muscle transports accumulated lactic acid from the muscle to the liver.

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