Question

In what stage of cellular respiration is most of the carbon dioxide produced?

Answer 1

I can't remeber this for the life of me. @Hotchellerae21 and @KittyT

Answer 2

The Citric Acid Cycle

Answer 3

@Hotchellerae21 what do you think about @roz_mar23 answer? Is it acceptable? XD

Answer 4

The first carbon dioxide is produced in between glycolysis and the Krebs/citric acid cycle.

Pyruvate (the product of glycolysis) is a three carbon molecule. Acetyl-coenzyme A (the first molecule into the Krebs cycle that joins to oxaloacetate to form citric acid) is a two carbon molecule. The missing carbon is released as carbon dioxide.

This step is often left out of introductory courses. It is sometimes called the preparatory step or transition step but is more formally described as pyruvate decarboxylation. You can read more about it here http://en.wikipedia.org/wiki/Pyruvate_de... and you will find a diagram showing it here http://en.wikipedia.org/wiki/File:Citric...

Answer 5

2 molecules of CO2 are released during the transformation of pyruvate into acetyl CoA. 4 molecules of CO2 are released during the citric acid cycle. No CO2 is released in glycolysis or oxidative phosphorylation.

Answer 6

The Citric Acid Cycle

Answer 7

Wow! Thank you all guys! Can you give medals to the other people please?

Answer 8

yes @kcurri the The Citric Acid Cycle is a short version of what i said lol

Answer 9

got another question? @kcurri

Answer 10

THANK YOU!!!! I got one hundred percent on my bio quiz. Fifteen questions guys! Thank you soooooooo....................... much!!!! YOUR THE BEST!!! I love ya!!

Answer 11

I don't know. I have more Bio to do so maybe soon. i'll keep in touch. ;) thanks again.

Answer 12

YES I AM A ROYAL lol GREAT JOB