ADP stands for which molecule?

ADP stands for which molecule?

• A. Adenosine Diphosphate
• B. Adenosine Monophosphate
• C. Adenosine Triphosphate
• D. Adenosine Tetraphosphate

Answer: (A)

ADP is Adenosine Diphosphate, a nucleotide made of adenosine (adenine plus ribose) with two phosphate groups. The number of phosphates in the name tells you how many phosphate groups are attached: one for monophosphate, two for diphosphate, three for triphosphate. The option with two phosphates is the correct one, while the one-phosphate form is AMP, the three-phosphate form is ATP, and tetraphosphate is not used in this common biological naming. In cellular energy transfer, ATP donates a phosphate to drive work, becoming ADP, which can then be recharged back to ATP.

ADP is Adenosine Diphosphate, a nucleotide made of adenosine (adenine plus ribose) with two phosphate groups. The number of phosphates in the name tells you how many phosphate groups are attached: one for monophosphate, two for diphosphate, three for triphosphate. The option with two phosphates is the correct one, while the one-phosphate form is AMP, the three-phosphate form is ATP, and tetraphosphate is not used in this common biological naming. In cellular energy transfer, ATP donates a phosphate to drive work, becoming ADP, which can then be recharged back to ATP.