QQuestionBiology
QuestionBiology
What is a difference between ATP and ADP molecules?
A. ADP can be used to directly power movement, while ATP cannot.
B. ATP molecules provide less energy to the cell than ADP molecules.
C. ATP has three phosphate groups, while ADP has two phosphate groups.
D. ADP is only made in plants, while ATP is made in both plants and animals.
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Answer
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Step 1:I'll solve this step by step with a clear explanation of the differences between ATP and ADP molecules.
Step 2:: Understanding ATP and ADP Structure
- ATP stands for Adenosine Triphosphate - ADP stands for Adenosine Diphosphate - Both molecules consist of: * Adenosine (a nucleotide base) * Phosphate groups
Step 3:: Analyzing the Phosphate Group Count
- ATP has $$3$$ phosphate groups
- ADP has 2 phosphate groups - This difference is crucial in energy storage and transfer
Step 4:: Energy Storage Mechanism
- The conversion is: $$ATP \rightarrow ADP + P_i + \text{Energy}
- When a phosphate group is removed from ATP, it releases energy - This energy transfer is critical for cellular processes
Step 5:: Evaluating the Answer Choices
- Choice A is incorrect - Choice B is incorrect - Choice C is CORRECT - Choice D is incorrect
Final Answer
ATP has three phosphate groups, while ADP has two phosphate groups. The key distinction is the number of phosphate groups, which directly impacts the molecule's energy storage capacity.
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