Kreb Cycle

Question 1

What are the products of the Krebs cycle?

Answer 1

4 CO2, 6 NADH+H+, 2 FADH2, + 2 ATP.

Question 2

Steps to Krebs cycle.

Answer 2

Acetyl CoA will attach to a 4 carbon molecule and the CoA will leave. Then you get a 6 carbon molecule called citrate which gets rearranged into ISO-citrate (same atoms different arrangement).

Then this molecule becomes a five carbon molecule called alpha ketpglyterate thru losing a CO2 molecule and gets Oxidized (NAD+ into NADH+H+).

Then we get a four carbon molecule w/CoA by losing CO2, getting oxidized (NAD+ into NADH+H+), and attaching CoA.

After that it loses a CoA and in that process, it releases a bit of energy. So an energy molecule called GDP gains a p-group and become GTP, and the p-group then attaches to ADP to become ATP.

This four carbon molecule loses Hydrogens and e- by FAD into FADH2, and NAD+ into NADH+H+ (we stole a lot!).

THATS IT!

Question 3

What was the ultimate goal of this process?

Answer 3

To get energy, electrons and hydrogen from NADH+H+ and FADH2 to put into the ETC which is the next step.