Can someone explain lactic acid to me?

Can someone explain lactic acid to me?
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Lactic Acid; first paragraph
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A 0.22 M solution of lactic acid (pKa 3.9) was found to contain 0.20 M in the dissociated form and 0.02 M undissociated form, the pH of the solution is (A) 2.9 (B) 3.3 (C) 4.9 (D) 5.4

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In conversion of Lactic acid to Glucose, three reactions of Glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate Carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase

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Last Answer : C

Tissues form lactic acid from glucose. This phenomenon is termed as (A) Aerobic glycolysis (B) Oxidation (C) Oxidative phosphorylation (D) Anaerobic glycolysis

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The oxidation of lactic acid to pyruvic acid requires the following vitamin derivative as the hydrogen carrier. (A) Lithium pyrophosphate (B) Coenyzme A (C) NAD+ (D) FMN

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Vinegar is acidic in nature due to the presence of (a) vanillic acid (b) lactic acid (c) hydrochloric acid (d) acetic acid

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The muscle fatigue occurs due to the release of (a) acetylcholine (b) lactic acid (c) adrenaline (d) none of these

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What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue? (1) ATP (2) Lactic acid (3) Ethyl alcohol (4) Carbon dioxide

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Last Answer : (2) Lactic acid Explanation: Anaerobic reactions break down glucose into pyruvic acid, which then reacts to produce lactic acid. As muscle metabolism shifts from aerobic to anaerobic ATP production, ... begins to accumulate in muscles and to appear in the bloodstream. This leads to muscle fatigue.

Which acid is present in lemon? (1) marlic acid (2) citric acid (3) lactic acid (4) tartaric acid

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Last Answer : (2) citric acid Explanation: Citric acid is a weak organic acid with the formula C6H8O7.The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.

Which one of the following chemicals is associated with muscle fatigue? (1) Uric acid (2) Acetic acid (3) Pyruvic acid (4) Lactic acid

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Which acid is present in lemon – (1) malic acid (2) citric acid (3) lactic acid (4) tartaric acid

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Last Answer : (2) citric acid Explanation: The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid.

Oxyntic cell is meant for the secretion of (1) Pepsin (2) Enterokinase (3) Hydrochloric acid (4) Lactic acid

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Which acid is present in lemon – (1) malic acid (2) citric acid (3) lactic acid (4) tartaric acid

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Last Answer : (2) citric acid Explanation: The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid.

Sweat contains water and ______. (1) Citric acid (2) Lactic acid (3) Salt (4) Vinegar

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Which of the following acids serves as an electrolyte in a lead storage battery? (1) Sulphuric acid (2) Lactic acid (3) Hydrochloric acid (4) Nitric acid

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Last Answer : (1) Sulphuric acid Explanation: Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).

The first organic compound synthesized in the laboratory was - (1) Urea (2) Uric acid (3) Lactic acid (4) Glucose

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Sour milk contains – (1) acetic acid (2) tartaric acid (3) citric acid (4) lactic acid

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