Topscore #2 Biology Question 38

[rpatel8]

Which of the following is NOT true about the Calvin cycle and Krebs cycle?

A) Both cycles produce and use carbondioxide.

B) Carbondioxide is fed into the Calvin cycle, where carbondioxide is produced and released from the Kreb cycle.

C) Reducing power is utilized in the Calvin cycle and NADH is removed in the Kreb cycle.

D) Energy is used in the Calvin cycle in the conversion of ATP to ADP, where energy is produced in the Kreb cycle where ATP is formed from ADP.

E) A & C


I got this question wrong when I took the test today. I put E.
I understand that A is wrong but for C, I thought the Calvin cycle does use reduction to make glucose but how is NADH removed in the Kreb cycle?? This makes no sense to me. If anyone could explain, that would be great!

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[crax]

can find this via search function.
results: poorly worded question. Answer can be interpreted as NADH is removed from the mitochondrial matrix to be utilized in the ETC.

 

[Kid0326]

the correct answer is B.
the calvin-benson cycle is to produce glucose hence:
Energy + CO2 + H2O ---> Glucose + O2

The creb cycle or respiration in general is to break down glucose:
Glucose + O2 -----> Energy + CO2 + H2O

 

[wired202808]

Which of the following is NOT true about the Calvin cycle and Krebs cycle?

A) Both cycles produce and use carbondioxide.

B) Carbondioxide is fed into the Calvin cycle, where carbondioxide is produced and released from the Kreb cycle.

C) Reducing power is utilized in the Calvin cycle and NADH is removed in the Kreb cycle.

D) Energy is used in the Calvin cycle in the conversion of ATP to ADP, where energy is produced in the Kreb cycle where ATP is formed from ADP.

E) A & C


I got this question wrong when I took the test today. I put E.
I understand that A is wrong but for C, I thought the Calvin cycle does use reduction to make glucose but how is NADH removed in the Kreb cycle?? This makes no sense to me. If anyone could explain, that would be great!

ye its poorly worded, I picked A as the answer because I knew Reduction occurs during the Calvin Cycle but I figured they meant NADH production during Kreb's. Dont sweat it! also remember how to spell carbon dioxide.

 

[rpatel8]

Haha ya. I was just copying directly from topscore an that is how they have it spelled.

 

[mh0000]

Haha ya. I was just copying directly from topscore an that is how they have it spelled.

That is a little worrisome if that is how topscore spells it (multiple times too). I agree with the answer being A. I don't think the wording of C is as ambiguous as some have said, but it could have been phrased a little more clearly.

 

[PooyaH]

the correct answer is B.
the calvin-benson cycle is to produce glucose hence:
Energy + CO2 + H2O ---> Glucose + O2

The creb cycle or respiration in general is to break down glucose:
Glucose + O2 -----> Energy + CO2 + H2O

I don't think you read the question carefully!

 

[addis4ever]

I also picked A. there's no way that B is the answer because it's true.

 

[rpatel8]

My question is how is C true and how can you deduct the answer is A, not E) A & C.

 

[wired202808]

My question is how is C true and how can you deduct the answer is A, not E) A & C.

well i thought of it like this in C it says reduction power (which does occur in Calvin Cycle) meanwhile the NADH is extracted during the Oxidative Prosphorylation

 

[Dental2000]

id pick A

option B is a right answer so that cannot be false....