QQuestionBiochemistry
QuestionBiochemistry
"ATP is NOT a nucleoside because it ________.
A. Has three phosphates instead of just one
B. Lacks the deoxyribosyl group
C. Has phosphate groups
D. Is not connected to a carbohydrate group"
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Answer
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Step 1Let's solve this step by step:
Step 2: Understand the definition of a nucleoside
- A nucleoside is a molecule composed of a nucleic base (like adenine, guanine, cytosine, or thymine) attached to a sugar molecule (ribose or deoxyribose) - Specifically, a nucleoside consists of:
Final Answer
ATP is NOT a nucleoside because it has three phosphates instead of just one. Key Insight: The distinction between nucleosides (base + sugar) and nucleotides (base + sugar + phosphate group(s)) is crucial in biochemistry.
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