Question

Find out the correct statement from the following
A) in the muscles, anaerobic respiration produces lactic acid.
B) in the muscles the aerobic respiration produces carbon dioxide ,water and oxygen.
C) aerobic respiration produces lactic acid.
D) None of the above

Answer 1

Hint: Anaerobic respiration takes place in the absence of oxygen and during exercise will stop when this happens on their use and anaerobic respiration to obtain energy. Anaerobic respiration involves the incomplete breakdown of glucose. It releases around 5% of energy during aerobic respiration for a molecule of glucose.

Complete step by step answer:
In muscle fibre due to less oxygen supply lactic acid is produced because of anaerobic respiration. Also due to the less amount of glycogen in muscle less oxygen is provided for respiration. This causes muscle fatigue. A muscle that has less myoglobin and mitochondria. Myoglobin is a pigment found in the muscle and it is responsible for binding of oxygen and providing it during respiration. Mitochondria are responsible for producing energy using glucose molecules and oxygen this process is called respiration. Energy is stored in the form of ATP this is required for muscle contraction. If oxygen is not supplied in the proper amount ATP is produced by aerobic respiration. In aerobic respiration, glucose is oxidized and lactic acid is made. Muscles become fatigued during long periods of vigorous activity. One cause of this is the build-up of lactic acid in the muscles from anaerobic respiration. The lactic acid is removed from the muscle by blood flowing through them. Much less energy is released during anaerobic respiration then during aerobic respiration. This is because the breakdown of glucose is incomplete.
Thus, the answer is option A: in the muscles, anaerobic respiration produces lactic acid.

Note: Unlike white muscle, red muscles have a high amount of glycogen, more mitochondria and myoglobin so these muscles do not feel fatigued. Example: muscles of the back.