Cell Communication and Cell Cycle typically accounts for about 10%–15% of the AP Biology multiple-choice section. That makes it worth dedicated practice even if your class spent only a few weeks on it.
Signal transduction, cell-to-cell communication, and regulation of cell division. Expect questions involving Signal reception, transduction pathways, second messengers; Cell cycle phases, checkpoints, mitosis and meiosis overview; Apoptosis and cancer basics.
Alternate timed sets with untimed review. Speed matters on exam day, but accuracy during study builds the foundation.
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