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)
Responses
net 2 NAD+, 2 ATP, 4 CO2, 2 FADH
6 NADH, 2 ATP, 4 CO2, and 2 FADH2
net 4 NADH, 4 ATP, 8 CO 2 , 4 FADH 2
net 1 NADH, 1 ATP, 2 CO2, 1 FADH2
The correct option is: net 6 NADH, 2 ATP, 4 CO2, and 2 FADH2
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Why are NADH and FADH2 necessities in the electron transport chain?(1 point)
Responses
They move down the electron transport chain.
They move down the electron transport chain.
They remove electrons from the electron transport chain.
They remove electrons from the electron transport chain.
They accept electrons in order to power the electron transport chain.
They accept electrons in order to power the electron transport chain.
They move electrons to the electron transport chain.
The correct response is: They move electrons to the electron transport chain. NADH and FADH2 are necessary in the electron transport chain because they donate electrons to the chain, which is essential for the generation of ATP through oxidative phosphorylation.
The correct answer is:
net 4 NADH, 4 ATP, 8 CO2, 4 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, is a series of chemical reactions that occur in the mitochondria of cells. Its primary function is to oxidize acetyl-CoA, releasing energy for the production of NADH and FADH2, as well as the generation of ATP.
Let's analyze the options provided:
1) Net 2 NAD+, 2 ATP, 4 CO2, 2 FADH:
This option seems incorrect as it only accounts for the reactants (NAD+ and FADH) and does not include the products of the cycle (NADH, ATP, and CO2). Also, it incorrectly mentions "2 ATP" instead of the actual ATP yield.
2) 6 NADH, 2 ATP, 4 CO2, and 2 FADH2:
This option seems incorrect because it overestimates the amount of NADH produced. The correct yield should be less than 6 NADH.
3) Net 4 NADH, 4 ATP, 8 CO2, 4 FADH2:
This option seems to be the most accurate based on our understanding of the Krebs cycle. It states that each glucose molecule going through the Krebs cycle produces a net yield of 4 NADH, 4 ATP, 8 CO2, and 4 FADH2.
4) Net 1 NADH, 1 ATP, 2 CO2, 1 FADH2:
This option seems incorrect as it significantly underestimates the yield of products. The correct values for NADH, ATP, CO2, and FADH2 should be higher than the values mentioned.
Therefore, the correct option listing the products of the Krebs cycle after 1 molecule of glucose goes through it is:
- Net 4 NADH
- 4 ATP
- 8 CO2
- 4 FADH2