Question

Aashima participated in the zonal relay race competition. During the practice session, she got cramps on the muscle. Based on the above text answer the following questions 1. Why aashima got cramps in her muscle?
2. Write the pathway involved in this reaction?

Answer 1

Answer:

1. Ashima got cramps in her muscles due to the secretion of lactic acid in her muscle cells in the absence of oxygen in the body of Ashima.

2. Anaerobic respiration:-

# guclose  (6-carbon molecule)—in cytoplasm ——————> piruvate (3-carbon molecule) + Energy———in the absence of  Oxygen——-in the muscle cells—-> 2 Lactic acid + Energy

#guclose (6-carbon molecule)—in cytoplasm ——————> piruvate (3-carbon molecule) + Energy———in the absence of  Oxygen—— in yeast—-> Ethanol + Carbondioxide + Energy.

   

Explanation:

Answer 2

1. Ashima got cramps in her muscle due to the accumulation of lactic acid.

• Muscle cramps occur when a muscle is not able to relax properly or when it becomes irritated by a buildup of lactic acid.
• Lactic acid is formed due to anaerobic respiration.
• this happens when not taken rest after a lot of physical activity.
• In the case of Ashima due to her zonal relay race competition, she did continuous practice and did not get any rest which caused cramps.
• Condition of muscle cramps can worsen due to dehydration.

2. Pathway of anaerobic reaction:

• Under anaerobic reaction in the absence of oxygen pyruvic acid follows three pathways.
• Lactic acid fermentation, alcohol fermentation, or cellular (anaerobic) respiration.
• In this case, lactic acid formed.

Lactic Acid Fermentation:

Glucose (6C) in the cytoplasm → Pyruvate (3C) + Energy → (In absence of oxygen in muscle cell) → 2 Lactic acid + Energy.

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