Question

A muscle cell breaks down glucose using the Krebs cycle.

Answer 1

Which best explains this cycle?



A.
Once pyruvic acid is extracted from the ADP found in glucose, it enters the Krebs cycle, where most of the ATP required by the cell is produced. NADH and FADH2 then make a small amount of ATP when they enter the electron transport system. The Krebs cycle is important for the role it plays in extracting ADP from the glucose molecule in order to produce pyruvic acid.

B.
During glycolosis, glucose is broken down, then the products of glycolysis enter the Krebs cycle. While some ATP is produced through the Krebs cycle, most ATP is formed when the products from the Krebs cycle enter the electron transport system. The transfer of energy from glucose to ATP occurs during the Krebs cycle.

C.
Glucose is broken down into pyruvic acid through the Krebs cycle. As glucose enters the Krebs cycle, it is transformed into NAD+ , FAD, and ADP. The Krebs cycle is important in the creation of these materials for the production of ATP in the electron transport system.

D.
The electron transport system breaks down glucose to create most of the ATP needed by the cell. The Krebs cycle uses NADH and FADH2 to create the ADP necessary for the generation of ATP. The Krebs cycle is important for the role it plays in glycolysis after ATP is created in the electron transport system.

Answer 2

@aaronq @Kainui @paki

Answer 3

@dan815 @happytales

Answer 4

Bruh, I live to witness the Citric acid cycle. Your answer would be D.

Answer 5

Bruh, can you plx explain it to me? The Krebs cycle is my worst study topic in Biology.

Answer 6

O_O biology

Answer 7

Oh, and while you're at it, mind answering the other 57 questions on this test and writing an essay for me?

Answer 8

haha xD

Answer 9

id actually like to write a biology test once, to see how much i dont know

Answer 10

Just use quizlet to make tests lulz.

Answer 11

I'm Jk lmfao. I haven't studied advanced biology. Too boring. It's just absorbing knowledge rather than finding solutions analytically.

Answer 12

You jerk. I was thinking it was B.

Answer 13

heh xD Ik

Answer 14

But... to give a rational answer, I would choose C. From what I've found, the creation of acetyl-CoA indicates the starting point of the Krebs cycle. Acetyl-CoA is generally created by sugars that are broken down by glycolysis to produce pyruvate, that in turn is decarboxylated by the enzyme pyruvate dehydrogenase, hence generating acetyl-CoA.

Answer 15

I chose B. 'Twas right.

Answer 16

O crap. My info was too in-depth. B makes sense. Once the glucose is broken down by glycolysis, acetyl-CoA is produced, hence initiating the cycle. This is what happens when you attempt to learn topics within minutes lol xD.

Answer 17

God, I want ice cream.

Answer 18

You just read my mind.

Answer 19

lmfao xD

Answer 20

Thanks for trying, though, N00b.

Answer 21

You da n00b you n00b xD