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Based on what you know of the theoretical yields of ATP from cellular respiration, show how this total was determined. Match the numbers in the left column to the appropriate blanks in the sentences on the right. Numbers can be used once, more than once, or not at all.

7, 34, 38, 6,10, 4, 23, 3, 2, 1

1. For each glucose molecule, _____ ATP are produced in glycolysis.
2. For each glucose molecule, _____ ATP are produced in the citric acid cycle via substrate-level phosphorylation.
3. A total of _____ NADH and _____ FADH2 molecules are produced from glycolysis, pyruvate oxidation, and the citric acid cycle.
4. If each NADH were to yield _____ ATP then a total of ATP and each FADH2 were to yield _____ ATP, then a total of _____ ATP would be produced via oxidative phosphorylation.
5. Adding these totals would result in _____ ATP.

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Answer:

1. For each glucose molecule, ___2__ ATP are produced in glycolysis.

2. For each glucose molecule, _2____ ATP are produced in the citric acid cycle via substrate-level phosphorylation.

3. A total of ___10__ NADH and ___2_ FADH2 molecules are produced from glycolysis, pyruvate oxidation, and the citric acid cycle.

4. If each NADH were to yield __3___ ATP then a total of ATP and each FADH2 were to yield __2___ ATP, then a total of __34___ ATP would be produced via oxidative phosphorylation.

5. Adding these totals would result in ___38__ ATP.

Explanation:

cellular respiration divides into 3 stages

1 Glycolysis: conversion of glucose into pyruvic acid with production of ATP and co-enzyme NADH

Gate way stage: In gate way reaction pyruvic acid is converted into Acetyl-coA, with production of co-enzyme NADH.

2 TCA cycle: oxidation of acteyl-coA(a derivative of pyruvic acid) into carbon dioxide,with production of some ATP energy containing NADH and electron carrier  FADH2.

3 Electron transport chain In the Electron Transport chain NADH and FADH2 are oxidized.

Energy yield in Aerobic Respiration: for each glucose molecule break down there are 12 reduced co-enzymes  to be oxidized 2 FADH2( 1 from each turn of TCA  cycle) and 10 NADH ( 2 from glycolysis,2 from gate way step between glycolysis and TCA cycle and 6 from two turns of TCA cycle) since 3 ATP are produced from each NADH and 2 ATP molecule are produced from each FADH2 , there are 34  ATP molecule generated by oxidative phosphorylation through the respiratory chain but the total ATP yield from the aerobic respiration of 1 glucose molecule is 38: 34 from the oxidation of reduced coenzymes, 2 from glycolysis and 2 from side reaction of the TCA cycle.

so that's how ATP molecule are generated from each molecule of glucose

1. For each glucose molecule, 2 ATP are produced in glycolysis.

2. For each glucose molecule, 2 ATP are produced in the citric acid cycle via substrate-level phosphorylation.

3. A total of 10 NADH and 2 FADH2 molecules are produced from glycolysis, pyruvate oxidation, and the citric acid cycle.

4. If each NADH were to yield 3  ATP then a total of ATP and each FADH2 were to yield 2 ATP, then a total of 34 ATP would be produced via oxidative phosphorylation.

5. Adding these totals would result in 38 ATP.

Cellular Respiration:

1. Glycolysis: conversion of glucose into pyruvic acid with production of ATP and co-enzyme NADH

Gate way stage: In gate way reaction pyruvic acid is converted into Acetyl-coA, with production of co-enzyme NADH.

2. TCA cycle: oxidation of acteyl-coA(a derivative of pyruvic acid) into carbon dioxide, with production of some ATP energy containing NADH and electron carrier  FADH2.

3. Electron transport chain: In the Electron Transport chain NADH and FADH2 are oxidized.

Energy yield in Aerobic Respiration: for each glucose molecule break down there are 12 reduced co-enzymes  to be oxidized 2 FADH2( 1 from each turn of TCA  cycle) and 10 NADH ( 2 from glycolysis,2 from gate way step between glycolysis and TCA cycle and 6 from two turns of TCA cycle) So that's how ATP molecule are generated from each molecule of glucose.

Find more information about Cellular Respiration here:

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