CELL RESPIRATION
GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glucose to glucose 6 phosphate
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Fructose 6 phosphate to fructose 1, 6 bis phosphate
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Glucose 6 phosphate to fructose 6 phosphate
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A and B
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Detailed explanation-1: -Oxidative phosphorylation is where most of the ATP actually comes from. It consists of two steps-the electron transport chain and chemiosmosis-which create and use an electrochemical gradient to produce ATP from ADP.
Detailed explanation-2: -In the first step, glucose ⇢ glucose-6-phosphate, ATP is used and gets converted into ADP. Similarly, in the third step, fructose-6-phosphate ⇢ fructose-1, 6-biphosphate, ATP is used. Thus, two ATPs are used in the first three steps of glycolysis. Hence, to split the glucose 2 molecules of ATPs are used.
Detailed explanation-3: -First Half of Glycolysis (Energy-Requiring Steps) In the first half of glycolysis, two adenosine triphosphate (ATP) molecules are used in the phosphorylation of glucose, which is then split into two three-carbon molecules as described in the following steps.
Detailed explanation-4: -There are two phases of Glycolysis: the “priming phase” because it requires an input of energy in the form of 2 ATPs per glucose molecule and. the “pay off phase” because energy is released in the form of 4 ATPs, 2 per glyceraldehyde molecule.