AP Biology · Unit 4: Cell Communication and Cell Cycle
4.1 Cell Communication
In short
You must understand that cells communicate via direct contact or chemical signaling. You need to distinguish between short-distance communication (using local regulators that target nearby cells) and long-distance communication (where signals travel to different cell types).
Last updated
What else do you need to know about Cell Communication?
The specification provides illustrative examples that may be used in context, such as immune cell interactions (APCs, helper and killer T-cells) for direct contact; neurotransmitters, plant immune responses, quorum sensing, and morphogens for short-distance signaling; and hormones like insulin, human growth hormone, thyroid hormones, testosterone, and estrogen for long-distance signaling.
Can you do these?
- I can describe how cells communicate through direct contact or chemical signaling from a distance.
- I can explain how cells use local regulators to communicate over short distances.
- I can explain how signals released by one cell type travel long distances to target other cell types.
How is Cell Communication tested on the exam?
You are expected to explain biological concepts and processes (Suggested Skill 1.B). Assessments will likely require you to describe the methods of cell communication and explain the mechanisms of short- and long-distance signaling, potentially applying these concepts to the illustrative examples provided.
Free practice questions with full explanations, and instant marking of your free-response answers.
Cell Communication: common questions
What do you need to know about Cell Communication for AP Biology?
You must understand that cells communicate via direct contact or chemical signaling. You need to distinguish between short-distance communication (using local regulators that target nearby cells) and long-distance communication (where signals travel to different cell types).
How is Cell Communication tested on the AP Biology exam?
You are expected to explain biological concepts and processes (Suggested Skill 1.B). Assessments will likely require you to describe the methods of cell communication and explain the mechanisms of short- and long-distance signaling, potentially applying these concepts to the illustrative examples provided.
How do I know I have mastered Cell Communication?
Check you can do each of these: describe how cells communicate through direct contact or chemical signaling from a distance; explain how cells use local regulators to communicate over short distances; explain how signals released by one cell type travel long distances to target other cell types.
Where does Cell Communication fit in AP Biology?
Cell Communication is topic 4.1 in Unit 4: Cell Communication and Cell Cycle of AP Biology.
Want help mastering this topic?
Work through Cell Communication one-on-one with an AP Guru tutor.
Book a free demo class