Which molecule's structure includes RNA nucleotides with additional phosphate groups?

Prepare for the ACC Biology Accuplacer Test. Use flashcards and multiple-choice questions with hints and explanations, ensuring you're exam-ready!

The structure that includes RNA nucleotides with additional phosphate groups is ATP, or adenosine triphosphate. ATP is composed of ribose (a type of sugar), adenine (a nitrogenous base), and three phosphate groups. The presence of these additional phosphate groups is crucial because they store and release energy that cells can use for various functions, including muscle contraction, protein synthesis, and cellular transport processes.

In ATP, the phosphate groups are linked together by high-energy bonds, and when one of these phosphate groups is hydrolyzed (broken down), energy is released for cellular processes. This distinguishes ATP from DNA and RNA, as DNA and RNA molecules primarily consist of nucleotides that lack these additional phosphate groups and serve specific roles in genetic information storage and transfer. Additionally, glucose is a simple sugar and does not comprise nucleotides or phosphate groups, further clarifying why ATP is the correct choice.

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