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Our AP Biology unit 4 practice test explores how a cell communicates within itself and with nearby cells. This unit takes special note of key examples of cell communication. It also emphasizes cellular communication pathways that regulate the cell cycle.
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AP Biology - Unit 4 Practice Questions. A student is examining an onion root tip cell under a microscope. Based on her observations, the student proposes that the onion root tip cell has completed interphase and is now in the first phase of mitosis.
Adjacent plant cells have narrow channels called plasmodesmata that pass through the cell walls of the connected cells and allow a cytoplasmic connection between the cells. Which of the following statements best describes a primary function of plasmodesmata?
1. Hydrophobic ligands cross the cellular membrane to use what kind of receptor? a. Intracellular receptors (cytoplasmic receptors) b. Extracellular receptors (cell surface receptors) c. G-protein-coupled receptors (GPCRs) d. Ligand-gated ion channels e. Enzyme-linked receptor
AP Bio. Unit 4 quiz for 11th grade students. Find other quizzes for Biology and more on Quizizz for free!
Download free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
Use our free quizzes to practice for AP Biology - Unit 4!