AP Biology Quiz
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CELL COMMUNICATION AND CELL CYCLE
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A lab uses a fluorescent reporter that increases signal when Cdk1 phosphorylates a specific peptide. In control cells, reporter fluorescence rises sharply at mitotic entry and falls at mitotic exit. In experimental cells, fluorescence rises normally but fails to fall, and cells do not reform nuclear envelopes. APC/C substrate tagging is normal, but proteasome function is impaired.
Which molecular signaling state best matches the experimental cells?
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