๐ŸงฌAP Biology

๐Ÿงฌap biology review

Cell Signaling - Slides

Verified for the 2025 AP Biology examโ€ขLast Updated on September 3, 2019



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In this session, we cover cell signaling, or how cells โ€œtalkโ€ (sending, target, non-target cell). We cover the 3 main types of signaling (direct contact, local signaling, long distance signaling). We provide 3 types of examples of long distance signaling (yeast cells [have โ€œgenders"], quorum bacteria, and antigen recognition by T cells). We cover the 3 stages of signal transduction and explain the signal phosphorylation. We show how signals are amplified and use a multiple choice question to show how if you can read a graph and be good critical thinker, you can answer the question.