PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Each step of glycolysis has a negative free-energy change.
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Each step of glycolysis has a positive free-energy change.
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Overall under typical cellular conditions, glycolysis has a negative free-energy change, though there are steps of both positive and negative free-energy change.
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Overall under typical cellular conditions, glycolysis has a positive free-energy change, though there are steps of both and negative free-energy change.
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Detailed explanation-1: -During glycolysis, the glucose molecule is eventually broken down and 2 ATP molecules are produced. The end product of glycolysis is pyruvate or pyruvic acid. This process occurs in the cytoplasm. It does not require oxygen.
Detailed explanation-2: -ATP and free energy Under standard conditions, glucose reacts with oxygen during glycolysis to release Gibbs free energy. This is an exergonic reaction, which means energy is released. In order to use up this free energy, this reaction is coupled to other reactions in our body.
Detailed explanation-3: -The input involved in glycolysis is two ATP (Adenosine triphosphate), two NAD+ and one glucose. The output involved in glycolysis is four ATP, two NADH (nicotinamide adenine dinucleotide hydrogen) and two pyruvate molecules.