AP®︎ Biology: Topic 4.1 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 4.1 of AP Biology – Cell Communication.
Questions List
Topic 4.1
Question 1 Easy
This question tests the following: IST-3.A.1
How do plant cells typically communicate directly with adjacent cells?
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Biology Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Topic 4.1: Cell Communication
Learning Objective: 4.1.A
Describe the ways that cells can communicate with one another.
Essential Knowledge: 4.1.A.1
Cells communicate with one another through direct contact with other cells or from a distance via chemical signaling. Illustrative examples: Immune cells interact through cell-to-cell contact, antigen-presenting cells (APCs), helper T-cells, and killer T-cells.
Learning Objective: 4.1.B
Explain how cells communicate with one another over short and long distances.
Essential Knowledge: 4.1.B.1
Cells communicate over short distances by using local regulators that target cells in the vicinity of the signal-emitting cell. Illustrative examples: Neurotransmitters; Plant immune response; Quorum sensing in bacteria; Morphogens in embryonic development.
Essential Knowledge: 4.1.B.2
Signals released by one cell type can travel long distances to target cells of another type. Illustrative examples: Insulin; Human growth hormone; Thyroid hormones; Testosterone; Estrogen.