Glycolysis inputs

• A. glucose, 2 NAD+, 2 ADP+2P
• B. 2 NAD+, 2 ADP + 2 P
• C. Glucose only
• D. Glucose, oxygen, ATP

Answer: (A)

The key idea is the actual substrates glycolysis uses per one glucose molecule. Glycolysis requires glucose itself, the electron carrier NAD+ (two molecules), and ADP plus inorganic phosphate to make ATP (two of each). Oxygen is not needed for glycolysis, and ATP is not an input here because ATP is produced later in the pathway. So the option listing glucose, two NAD+, and two ADP with two P accurately reflects the required inputs. The other options miss essential components (no glucose or no NAD+) or include items glycolysis doesn’t start with (oxygen or ATP).