Osmosis and Diffusion Worksheet
Grade 11 Biology worksheet covering key concepts of osmosis and diffusion, including definitions, factors affecting rates, and real-world examples.
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Standards
Topics
Osmosis and Diffusion: Cell Transport Mechanisms
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following best describes the process of diffusion?
Movement of water across a semipermeable membrane.
Movement of solutes from an area of high concentration to an area of low concentration.
Active transport requiring ATP.
Movement of substances against their concentration gradient.
2. What happens to an animal cell when placed in a hypotonic solution?
It shrinks.
It swells and may burst.
It remains unchanged.
It undergoes plasmolysis.
1. Facilitated diffusion requires energy in the form of ATP.
True
False
2. Osmosis is the diffusion of solutes across a semipermeable membrane.
True
False
1. The net movement of particles from an area of higher concentration to an area of lower concentration is called .
2. When a plant cell is placed in a hypertonic solution, its cell membrane pulls away from the cell wall in a process called .
1. Explain the difference between passive transport and active transport. Provide an example of each.
2. Describe how the structure of the cell membrane facilitates selective permeability.
Observe the diagram of the cell membrane below and answer the questions that follow.
1. Identify two components of the cell membrane shown in the diagram that are involved in transport.
2. How does the phospholipid bilayer contribute to the selective permeability of the cell membrane?