The Question is from neet-botany , and it was created by the author NISHANTH

Question

In hurdle race, which of the following is accumulated in the leg muscle?

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
	**Primary Concept**: Muscle Metabolism during Anaerobic Respiration
	**Related Topics**: Lactic Acid Fermentation, Glycolysis, Muscle Fatigue
	**Prerequisites**: Basic understanding of cellular respiration and muscle function.
## SOLUTION PATHWAY
**Given Information**:
A hurdle race involves short bursts of intense activity.
**Method & Steps**:
	1. During intense exercise, the demand for energy (ATP) in muscles increases rapidly.
		Reasoning: Muscles need ATP to contract.
	2. If oxygen supply is insufficient to meet this increased demand, the muscle cells switch to anaerobic respiration.
		Working: Anaerobic respiration is a faster, albeit less efficient, way to produce ATP compared to aerobic respiration.
		Key Point: Anaerobic respiration in muscles primarily involves glycolysis followed by lactic acid fermentation.
	3. In lactic acid fermentation, pyruvic acid (the end product of glycolysis) is converted into lactic acid.
		Result: Lactic acid accumulates in the muscle tissue.
		Verification: This accumulation contributes to muscle fatigue and the burning sensation experienced during intense exercise.
 ## OPTION ANALYSIS
[A] ✓: Lactic acid is the correct answer. During intense exercise like hurdle racing, muscles rely on anaerobic respiration, leading to lactic acid accumulation.
[B] :x: Pyruvic acid is an intermediate product in both aerobic and anaerobic respiration. While it is produced during intense exercise, it is rapidly converted to lactic acid under anaerobic conditions.
[C] :x: Citric acid is involved in the Krebs cycle, a part of aerobic respiration. This process is not the primary energy source during short, intense bursts of activity like hurdle racing.
[D] :x: Uric acid is a waste product of purine metabolism and is not directly related to muscle activity during exercise.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing pyruvic acid with lactic acid: Remember that pyruvic acid is a precursor to lactic acid in anaerobic respiration.
		2. Assuming aerobic respiration is the primary energy source during all types of exercise:  Understand that anaerobic respiration takes over during short, high-intensity activities.
	**Quick Tips**:
		1. Associate 'lactic acid' with 'muscle burn' during intense exercise.
		2. Remember that 'anaerobic' means 'without oxygen', and lactic acid fermentation is an anaerobic process.

NISHANTH · Answer

The correct Option is "Lactic acid"

NISHANTH · Answer

Pyruvic acid

NISHANTH · Answer

Citric acid

NISHANTH · Answer

Uric acid

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