Osmosis and Tonicity Worksheet
Explore the concepts of osmosis, diffusion, and tonicity with this Grade 8 science worksheet.
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Osmosis and Tonicity
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. What is the passive movement of water across a semipermeable membrane from an area of high water concentration to an area of low water concentration called?
Diffusion
Active Transport
Osmosis
Facilitated Diffusion
2. A cell placed in a hypotonic solution will likely:
Shrink
Swell and burst
Stay the same size
Change color
1. The cell membrane is , meaning it allows some substances to pass through while blocking others.
2. In an solution, the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.
1. Osmosis is the movement of solute molecules from a region of higher concentration to a region of lower concentration.
True
False
2. Plant cells have a cell wall that prevents them from bursting in a hypotonic solution.
True
False
1. Describe the main difference between diffusion and osmosis.
2. Explain what happens to an animal cell when it is placed in a hypertonic solution. Why does this occur?
Observe the diagram of a cell membrane below and answer the question.
What is the primary function of the structures labeled as 'phospholipids' in the cell membrane regarding the movement of substances?