The best way to learn Korean language is to look it up on google or read books
Hope this helps
The cellular respiration processes of all living cells make use of the coenzyme Nicotinamide adenine dinucleotide (NAD). It plays a key role in energy metabolism by accepting and donating electrons. The low energy form NAD+ shown at left is raised to the high energy form NADH.
I think that the answer is letter “D”
