I’m not sure but I think it’s A or C
Answer:
Explanation:
Two of the most important and widespread vitamin-derived coenzymes are nicotinamide adenine dinucleotide (NAD) and coenzyme A. ... When NAD loses an electron, the low energy coenzyme called NAD+ is formed. When NAD gains an electron, a high-energy coenzyme called NADH is formed.
It is Codominance. Examples for this phenomenon is ABO blood groups.
Answer:
Circulatory would be the answer.
Explanation: