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Multiple Choice
Which of the following are the three main components of ATP (adenosine triphosphate)?
A
Adenine, deoxyribose, and two phosphate groups
B
Adenine, ribose, and three phosphate groups
C
Cytosine, ribose, and two phosphate groups
D
Guanine, ribose, and three phosphate groups
Verified step by step guidance
1
Identify the structure of ATP (adenosine triphosphate) and its components. ATP is a nucleotide that consists of three main components: a nitrogenous base, a sugar, and phosphate groups.
Recognize that the nitrogenous base in ATP is adenine. Adenine is one of the four nucleobases in the nucleic acid of DNA and RNA, and it is a purine base.
Understand that the sugar component in ATP is ribose. Ribose is a five-carbon sugar (a pentose) that is part of the backbone of RNA and is also present in ATP.
Note that ATP contains three phosphate groups. These phosphate groups are linked in a chain, and the bonds between them store significant amounts of energy, which is released during hydrolysis.
Combine the components: adenine (the nitrogenous base), ribose (the sugar), and three phosphate groups to identify the correct structure of ATP.