4
QuizMultiple Choice

Cell Cycle — Unit test

Question 4 • First Semester Biology

How does ATP supply energy for cellular activities?

Answer
A
by breaking off a phosphate group from its structure
B
by releasing the sugar molecule from its structure
C
by adding a phosphate group to its structure
D
by attaching itself to a glucose molecule

Explanation

ATP supplies energy when its bond to the terminal phosphate group is broken, releasing that phosphate and forming ADP. This reaction releases usable energy for cellular activities. Therefore, the correct choice is A, by breaking off a phosphate group from its structure.

AI-written and checked against the verified answer.

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