The correct sequence of anaerobic respiration in our muscle cells during heavy exercise is:
A. Glucose ✅
Cytoplasm ➡️ Pyruvate Muscle cells ➡️ Lactic acid + Energy
Step-by-step explanation:
During heavy exercise, when oxygen supply to muscle cells is limited, they undergo anaerobic respiration to generate energy. The correct sequence described in option A is as follows:
A. Glucose is initially broken down in the cytoplasm of muscle cells.
Glucose ➡️ Cytoplasm ➡️ Pyruvate
This breakdown of glucose into pyruvate produces some energy but also results in the accumulation of pyruvate in the cytoplasm.
Subsequently, the pyruvate is converted into lactic acid within the muscle cells:
Pyruvate ➡️ Muscle cells ➡️ Lactic acid + Energy
This process allows for a rapid generation of energy without the need for oxygen (anaerobic), but it also produces lactic acid, which can contribute to muscle fatigue and soreness during intense exercise.
So, option A correctly describes the sequence of anaerobic respiration in muscle cells during heavy exercise.