Question : Which one of the following chemicals is associated with muscle fatigue ?
Option 1: Uric acid
Option 2: Acetic acid
Option 3: Pyruvic acid
Option 4: Lactic acid
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Correct Answer: Lactic acid
Solution : The correct option is Lactic acid.
Lactic acid (lactate) is one of the primary compounds responsible for muscular fatigue. During vigorous or sustained muscular exercise, oxygen delivery may fall short of meeting energy needs, resulting in anaerobic metabolism. This causes lactic acid to build up in the muscles, contributing to tiredness, muscular discomfort, and a decline in muscle function.
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Question : Pectin, which is responsible for the firmness and softness of fruits is mainly composed of which acid unit?
Option 1: Aspartic acid
Option 2: D-Galacturonic acid
Option 3: Lactic acid
Option 4: Glutamic acid
Question : Vinegar is
Option 1: Diluted acetic acid
Option 2: Glacial acetic acid
Option 3: Glacial formic acid
Option 4: Diluted formic acid
Question : Oxyntic cell is meant for the secretion of
Option 1: Pepsin
Option 2: Enterokinase
Option 3: Hydrochloric acid
Question : Which is known as carbolic acid?
Option 1: Phenol
Option 2: Ethanol
Option 3: Acetic acid
Option 4: Oxalic acid
Question : The substrate of photorespiration is:
Option 1: Fructose
Option 2: Pyruvic acid
Option 3: Glycolate
Option 4: Glucose
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