The Question is from neet-botany respiration-in-plants fermentation, and it was created by the author D VINOD

Question

During muscle fatigue, which compound is produced due to fermentation?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Anaerobic Respiration and Muscle Fatigue
 **Related Topics**: Fermentation, Lactic Acid Fermentation, Cellular Respiration
 **Prerequisites**: Understanding of glycolysis and anaerobic metabolic pathways.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the compound produced during muscle fatigue due to fermentation.
  Muscle fatigue occurs when the muscles lack sufficient oxygen for aerobic respiration.
**Method & Steps**:
 1. Understand that during strenuous exercise, oxygen supply to muscles may be insufficient for aerobic respiration (which uses oxygen to break down glucose completely into $CO_2$ and $H_2O$).
  Reasoning:  The body resorts to anaerobic respiration to generate energy.
  Formula/Rule: None explicitly needed; this is a conceptual understanding.
 2. Identify the type of fermentation occurring in muscles during fatigue. In muscles, lactic acid fermentation takes place.
  Working:  Glucose is broken down into pyruvate, and then pyruvate is converted into lactic acid ($C_3H_6O_3$) without the need for oxygen.
  Key Point:  Lactic acid accumulation is a major cause of muscle soreness and fatigue.
 3. Identify the product of lactic acid fermentation.
  Result: Lactic acid is the compound produced.
  Verification:  This is a well-established biological fact.
 ## OPTION ANALYSIS
[A] :x: Ethanol is produced during alcoholic fermentation, not in muscles.
[B] :x: Acetic acid is produced during acetic acid fermentation, not in muscles.
[C] ✓: Lactic acid is the correct answer, produced during lactic acid fermentation in muscles during oxygen deficiency.
[D] :x: Citric acid is involved in the citric acid cycle (Krebs cycle), part of aerobic respiration, not anaerobic fermentation.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing lactic acid fermentation with alcoholic fermentation: Remember that lactic acid fermentation occurs in muscle cells, producing lactic acid, while alcoholic fermentation occurs in yeast, producing ethanol.
  2.Linking lactic acid production with aerobic respiration: Lactic acid is a byproduct of anaerobic respiration, not aerobic respiration.
 **Quick Tips**:
  1.Remember that lactic acid builds up in muscles during intense exercise leading to fatigue.
  2.Associate lactic acid with muscle soreness and cramps.

D VINOD · Answer

Ethanol

D VINOD · Answer

Acetic acid

D VINOD · Answer

The correct Option is "Lactic acid"

D VINOD · Answer

Citric acid

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