The first one, cause their trying to make it a positive way to reinforce. Which just means their trying to fix something again
These circular DNA molecules are called C: Plasmids
ANSWER:
Needed to form cell membranes
I hope I was of help to you :)
Answer
In the presence of oxygen two energy products are produced, these are:
1. ATP
2. NADH2
One NADH2 produce three ATP.
Conclusion:
so in the presence of oxygen the energy rich compound which is produced during glycolysis is NADH2.