AP Bio Unit 3 Exam Review
Authored by Kristin Shumway
Biology
9th - 12th Grade
NGSS covered
Used 30+ times
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This AP Biology Unit 3 exam review covers cellular structure and transport, targeting 11th and 12th grade students preparing for the Advanced Placement Biology examination. The questions comprehensively assess student understanding of membrane transport mechanisms, including passive transport (simple and facilitated diffusion), active transport, endocytosis, and exocytosis. Students must demonstrate mastery of osmotic relationships and tonicity effects on both plant and animal cells, understand the molecular basis of membrane permeability, and analyze how ATP hydrolysis drives energy-requiring transport processes. The quiz also evaluates knowledge of cellular organelles and their functions, particularly focusing on the endomembrane system (rough ER, Golgi apparatus, lysosomes) and how protein synthesis location determines protein destination. Students need strong conceptual understanding of cell membrane structure, the fluid mosaic model, and how molecular properties determine transport mechanisms across biological membranes. Created by Kristin Shumway, a Biology teacher in the US who teaches grades 9-12. This comprehensive review quiz serves multiple instructional purposes, functioning effectively as pre-exam preparation, formative assessment, or structured review sessions before the AP Biology examination. Teachers can utilize this assessment to identify student misconceptions about transport mechanisms and cellular processes, assign it as homework to reinforce Unit 3 concepts, or implement it as a warm-up activity across multiple class periods. The quiz aligns with AP Biology Learning Objectives 2.8-2.11 covering membrane transport and cellular compartmentalization, supporting the College Board's emphasis on understanding how molecular structure determines function in biological systems. The varied question formats and real-world applications, including medical scenarios and agricultural examples, help students connect theoretical knowledge to practical situations they may encounter on the AP examination.
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited?
Movement of oxygen into a cell
Movement of water through aquaporins
Passage of a solute against its concentration gradient
Facilitated diffusion of a permeable substance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A common laboratory investigation involves putting a solution of starch and glucose into a dialysis bag and suspending the bag in a beaker of water, as shown in the figure below.
The investigation is aimed at understanding how molecular size affects movement through a membrane.
Which of the following best represents the amount of starch, water, and glucose in the dialysis bag over the course of the investigation?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cystic fibrosis is a recessively inherited disorder that results from a mutation in the gene encoding CFTR chloride ion channels located on the surface of many epithelial cells. As shown in the figure, the mutation prevents the normal movement of chloride ions from the cytosol of the cell to the extracellular fluid. As a consequence of the mutation, the mucus layer that is normally present on the surface of the cells becomes exceptionally dehydrated and viscous.
An answer to which of the following questions would provide the most information about the association between the CFTR mutation and the viscous mucus?
Is the mucus also secreted from the cells through the CFTR proteins?
How does the disrupted chloride movement affect the movement of sodium ions and water by the cell?
How does the mutation alter the structure of the CFTR proteins?
What is the change in nucleotide sequence that results in the CFTR mutation?
Tags
NGSS.HS-LS3-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You are a farmer growing crops. The concentration of your potatoes are 0.35M and you are advised to water your plants with a 0.35M saline solution to provide nutrients. What happens to the plant cells?
Cells are normal since this is an isotonic solution.
Cells become flaccid since this is an isotonic solution.
Cell become plasmolyzed since this is an isotonic solution.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You are a doctor. A patient comes in dehydrated. What type of solution would be best to place into their IV?
A hypotonic solution to allow the cells to rehydrate.
A slightly hypertonic solution to allow the cells to rehydrate.
An isotonic solution to increase fluid in the body without causing harm to the cells.
An isotonic solution to decrease fluid in the body without causing harm to the cells.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between the molecule transported in facilitated diffusion versus simple diffusion?
facilitated diffusion involves nonpolar solute transport through a membrane protein
simple diffusion involves nonpolar solute transport through a membrane protein
facilitated diffusion involves polar solute transport through a membrane protein
simple diffusion involved polar solute transport through a membrane protein
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following describes the difference between passive and active transport?
passive transport involves moving solutes against the concentration gradient using ATP.
active transport involves moving solutes against the concentration gradient using ATP.
passive transport involves moving solutes with the concentration gradient using ATP.
active transport involves moving solutes with the concentration gradient using ATP.
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