The Krebs cycle forms many products. Which option lists the correct products of the Krebs cycle after 1 molecule of glucose goes through it?(1 point)
6 NADH, 2 ATP, 4 CO 2 , and 2 FADH 2
net 1 NADH, 1 ATP, 2 CO 2 , 1 FADH 2
net 2 NAD+, 2 ATP, 4 CO 2 , 2 FADH
net 4 NADH, 4 ATP, 8 CO2, 4 FADH2
6 NADH, 2 ATP, 4 CO 2 , and 2 FADH 2
The correct products of the Krebs cycle after 1 molecule of glucose goes through it are:
- 6 NADH
- 2 ATP
- 4 CO2
- 2 FADH2
Therefore, the correct option is:
6 NADH, 2 ATP, 4 CO2, and 2 FADH2
To determine the correct products of the Krebs cycle after 1 molecule of glucose goes through it, we need to understand the steps and reactions involved in the cycle.
The Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid cycle, occurs in the mitochondria of eukaryotic cells. It is a series of chemical reactions that break down glucose to extract energy in the form of ATP and produce electron carriers.
Here's how to determine the correct products:
1. Start with glucose: 1 molecule of glucose (C6H12O6) is broken down into two molecules of pyruvate through a process called glycolysis. This step occurs in the cytoplasm outside the mitochondria.
2. Conversion to acetyl CoA: Each pyruvate molecule enters the mitochondria and is converted into acetyl CoA, releasing one molecule of carbon dioxide (CO2). This step occurs twice, as there are two pyruvate molecules generated from one glucose molecule. Therefore, a total of 2 CO2 molecules are released.
3. The Krebs cycle: The acetyl CoA enters the Krebs cycle, which consists of a series of reactions that take place in the mitochondrial matrix. During the Krebs cycle, the acetyl CoA is completely oxidized, resulting in the generation of energy-rich electron carriers and more carbon dioxide.
The correct products of the Krebs cycle after 1 molecule of glucose goes through it are:
- 6 NADH: NADH (nicotinamide adenine dinucleotide) is an electron carrier that stores high-energy electrons. During the Krebs cycle, 3 molecules of NADH are produced per acetyl CoA molecule, and there are 2 acetyl CoA molecules produced from 1 glucose molecule. Therefore, a total of 6 NADH molecules are generated.
- 2 ATP: ATP (adenosine triphosphate) is the primary energy currency of cells. During the Krebs cycle, one ATP molecule is produced per acetyl CoA molecule. As there are 2 acetyl CoA molecules produced from 1 glucose molecule, a total of 2 ATP molecules are generated.
- 4 CO2: Carbon dioxide is a waste product of the Krebs cycle. One molecule of carbon dioxide is released during the conversion of each pyruvate to acetyl CoA. Since there are 2 pyruvate molecules produced from 1 glucose molecule, a total of 4 CO2 molecules are generated.
- 2 FADH2: FADH2 (flavin adenine dinucleotide) is another electron carrier that is produced during the Krebs cycle. One molecule of FADH2 is generated per acetyl CoA molecule. As there are 2 acetyl CoA molecules produced from 1 glucose molecule, a total of 2 FADH2 molecules are produced.
Based on this information, the option that lists the correct products of the Krebs cycle after 1 molecule of glucose goes through it is:
6 NADH, 2 ATP, 4 CO2, and 2 FADH2.