Question
Question 1 of 26 Which two substances do cells need in order to make NADH? A. NAD^(+) B. O_(2) C. ATP D. H^(+)
Answer
4.1
(251 Votes)
Felicity
Elite · Tutor for 8 years
Answer
A. D.
Explanation
NADH is produced in cells through a process called cellular respiration, specifically during the glycolysis and citric acid cycle stages. The two substances required to produce NADH are NAD^+ (Nicotinamide adenine dinucleotide) and H^+ (a hydrogen ion). NAD^+ accepts a hydrogen ion and two electrons to form NADH. Oxygen (O2) and ATP are involved in cellular respiration, but they are not directly involved in the formation of NADH.