Grade 12 Osmosis and Diffusion Worksheet
This worksheet covers key concepts of osmosis and diffusion, including their definitions, mechanisms, and importance in biological systems, suitable for Grade 12 science students.
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Osmosis and Diffusion
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Read each question carefully and answer to the best of your ability. Provide detailed explanations where required.
1. Which of the following statements best describes the process of diffusion?
The movement of water across a semipermeable membrane.
The movement of solutes from an area of high concentration to an area of low concentration.
The active transport of molecules against their concentration gradient.
The process by which cells engulf large particles.
1. Osmosis is a special type of diffusion that involves the movement of solvents.
True
False
1. The movement of molecules from an area of higher concentration to an area of lower concentration is called .
2. When a cell is placed in a hypotonic solution, water will move the cell, causing it to .
1. Explain the difference between passive and active transport, providing an example of each.
Observe the diagram below showing different types of transport across a cell membrane.
2. Identify the processes labeled A and B in the diagram.
3. Which process (A or B) requires energy? Justify your answer.
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