MUSCLE PHYSIOLOGY

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PHYSIOLOGY

MUSCLE ENERGETICS GLYCOLYSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Metabolism Problem Set Problem 1:Glucose conversion Glycolysis leads to the production of ____ and two molecules of ATP. In the absence of oxygen, fermentation leads to the production of ____ Glycolysis plus the citric acid cycle can convert the carbons of glucose to ____, storing the energy as ATP, ____ and ____
A
lactic acid, pyruvate, CO2, NADH, FADH2
B
pyruvate, lactic acid, CO2, NADH, FADH2
C
CO2, NADH, FADH2, lactic acid, pyruvate
D
O2, lactic acid, pyruvate, FADH2
Explanation: 

Detailed explanation-1: -1: Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.

Detailed explanation-2: -During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi–> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O).

Detailed explanation-3: -Glycolysis is the cytosolic pathway in which one molecule of glucose is broken down into two molecules of pyruvate, along with a net production of two molecules of ATP and NADH (nicotinamide adenine dinucleotide). Pyruvates are then fully metabolized in mitochondrial respiration.

Detailed explanation-4: -For each molecule of glucose that is broken down, two molecules of pyruvate, two molecules of ATP, and two molecules of NADH are produced. In the absence of oxygen, pyruvate is converted to lactate, and NADH is reoxidized to NAD+.

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