Question
If one molecule of glucose undergoes the reaction of glycolysis, what is produced?(1 point)
Responses
4 ATPs, 6 NADH, and 2 FADH2
4 ATPs, 6 NADH, and 2 FADH2
2 ATPs, 2 NADH, and 2 Pyruvate
2 ATPs, 2 NADH, and 2 Pyruvate
3 NADH and 1 FADH2
3 NADH and 1 FADH2
1 ATP, 3 NADH, and 1 Pyruvate
2 ATPs, 2 NADH, and 2 pyruvate
What are the functions of the high-energy electrons in the electron transport chain?(1 point)
Responses
They make ATP from ADP.
They make ATP from ADP.
They create ATP synthase.
They create ATP synthase.
They hold water bonds.
They hold water bonds.
They carry NADH and FADH2.
They create ATP synthase.
What is the third step in cellular respiration?(1 point)
Responses
the Krebs cycle
the Krebs cycle
the electron transport chain
the electron transport chain
the citric acid cycle
the citric acid cycle
glycolysis
the citric acid cycle
To determine the answer to this question, we need to understand the process of glycolysis. Glycolysis is the metabolic pathway that breaks down glucose into pyruvate, along with the production of ATP and electron carriers.
During the process of glycolysis, one molecule of glucose is converted into two molecules of pyruvate. Additionally, there is a net production of 2 ATP molecules generated directly through substrate-level phosphorylation, where a phosphate group is transferred from a substrate to ADP, forming ATP.
To understand the production of electron carriers, we need to know that NAD+ (nicotinamide adenine dinucleotide) is a molecule that can accept electrons and become reduced to NADH. Similarly, FAD (flavin adenine dinucleotide) can accept electrons and become reduced to FADH2.
In the process of glycolysis, two molecules of NAD+ are reduced to NADH. Therefore, if one molecule of glucose undergoes the reaction of glycolysis, the correct answer is:
2 ATP, 2 NADH, and 2 Pyruvate
So, out of the provided responses, the correct answer is the second option: 2 ATPs, 2 NADH, and 2 Pyruvate.