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Multiple Choice
Which molecule carries chemical energy that cells use for their functions?
A
NADH (Nicotinamide Adenine Dinucleotide)
B
FADH2 (Flavin Adenine Dinucleotide)
C
ATP (Adenosine Triphosphate)
D
GTP (Guanosine Triphosphate)
Verified step by step guidance
1
Begin by understanding the role of each molecule listed in the problem. These molecules are involved in cellular processes and energy transfer.
NADH and FADH2 are electron carriers that play a crucial role in the electron transport chain during cellular respiration. They help in the production of ATP but do not directly carry chemical energy for immediate cellular functions.
GTP is similar to ATP in structure and function but is primarily used in protein synthesis and signal transduction rather than as a universal energy currency.
ATP (Adenosine Triphosphate) is the primary energy carrier in cells. It provides energy for various cellular processes by releasing a phosphate group, converting to ADP (Adenosine Diphosphate).
Recognize that ATP is the molecule that directly provides energy for cellular functions, making it the correct answer to the problem.