When scientists placed ATP Synthase linked to fluorescent actin on a microscope slide and added ATP, the actin could be seen spinning. If the scientists instead added ADP what would happen?
A. The actin would spin when ADP is phosphorylated to form ATP.
B. The actin would not spin because only ATP can move through the channel in ATP synthase.
C. The actin would not spin because it required ATP hydrolysis.
D. The actin would spin because ADP can also move through the channel in ATP synthase.
Answer: C
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