MHT CET 202622 AprilMorning Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 22 April
- Shift
- Morning Shift
- Subject
- Biology
- Chapter
- Respiration in Plants
MHT CET 2026 · 22 April · Morning Shift · Biology · Respiration in Plants
Given below are two statements regarding anaerobic respiration in...
Given below are two statements regarding anaerobic respiration in the muscles.
Statement (I): In muscles, NADH+H^+ produced during glycolysis is reoxidised to NAD.
Statement (II): One proton and two electrons produced, which are donated to pyruvic acid which yields lactic acid leading to muscle fatigue.
In light of the above statements, choose the most appropriate answer from the options given below.
Statement (I): In muscles, NADH+H^+ produced during glycolysis is reoxidised to NAD.
Statement (II): One proton and two electrons produced, which are donated to pyruvic acid which yields lactic acid leading to muscle fatigue.
In light of the above statements, choose the most appropriate answer from the options given below.
Options
- ABoth Statement (I) and Statement (II) are correct.
- BBoth Statement (I) and Statement (II) are incorrect.
- CStatement (I) is correct but Statement (II) is incorrect.
- DStatement (I) is incorrect but Statement (II) is correct.
Correct answer
C. Statement (I) is correct but Statement (II) is incorrect.
Step-by-step solution
Statement (I) is correct because during anaerobic respiration in muscle cells (lactic acid fermentation), the NADH + H^+ to ensure a continuous supply of NAD^+ donates two protons (2) and two electrons (2) to pyruvic acid, not one proton and two electrons. The reaction is catalysed by lactate dehydrogenase.
Answer: Statement (I) is correct but Statement (II) is incorrect.
Answer: Statement (I) is correct but Statement (II) is incorrect.