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Questions and Answers
Which type of transport requires cellular energy?
Which type of transport requires cellular energy?
What is the main factor affecting movement across a membrane?
What is the main factor affecting movement across a membrane?
Which process is mediated through transmembrane proteins?
Which process is mediated through transmembrane proteins?
What is the role of diffusion and osmosis in a cell's ability to maintain homeostasis?
What is the role of diffusion and osmosis in a cell's ability to maintain homeostasis?
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What would happen to the tubes if left in the beaker for 2 hours?
What would happen to the tubes if left in the beaker for 2 hours?
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How does relative diffusion volume depend on the surface-to-volume ratio?
How does relative diffusion volume depend on the surface-to-volume ratio?
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Why do you think the cells of our body do not get as big as the largest cell?
Why do you think the cells of our body do not get as big as the largest cell?
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What influences cell size restriction?
What influences cell size restriction?
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What is diffusion primarily caused by?
What is diffusion primarily caused by?
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In which state of matter is diffusion slow?
In which state of matter is diffusion slow?
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What type of data is used for statistical analysis in quantitative observations?
What type of data is used for statistical analysis in quantitative observations?
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What is osmosis defined as?
What is osmosis defined as?
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What occurs when solute molecules are unable to diffuse?
What occurs when solute molecules are unable to diffuse?
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What is the primary focus of procedure 1 in the lab?
What is the primary focus of procedure 1 in the lab?
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What is the main activity in procedure 2 of the lab?
What is the main activity in procedure 2 of the lab?
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What does a differentially permeable membrane demonstrate in the lab?
What does a differentially permeable membrane demonstrate in the lab?
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What is the difference between qualitative and quantitative observations?
What is the difference between qualitative and quantitative observations?
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What factor influences the rate of diffusion and osmosis?
What factor influences the rate of diffusion and osmosis?
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What defines the restriction of cell size?
What defines the restriction of cell size?
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What is a differentially permeable membrane?
What is a differentially permeable membrane?
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What serves as a membrane in the exercise?
What serves as a membrane in the exercise?
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What is the primary function of osmosis?
What is the primary function of osmosis?
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What do diffusion rates depend on?
What do diffusion rates depend on?
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What is the primary purpose of using agar cubes in the exercise?
What is the primary purpose of using agar cubes in the exercise?
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What is the purpose of the data sheet for diffusion and osmosis?
What is the purpose of the data sheet for diffusion and osmosis?
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Which molecules pass easily through cellulose membranes?
Which molecules pass easily through cellulose membranes?
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What does osmosis involve?
What does osmosis involve?
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What is the main focus of the exercise?
What is the main focus of the exercise?
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What is the primary purpose of using rubber balloons in the exercise?
What is the primary purpose of using rubber balloons in the exercise?
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What is the exercise mainly concerned with in relation to diffusion?
What is the exercise mainly concerned with in relation to diffusion?
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What is the primary focus of the data sheet for diffusion and osmosis?
What is the primary focus of the data sheet for diffusion and osmosis?
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Study Notes
Diffusion, Osmosis, and Permeability in Biological Membranes
- Differentially permeable membranes allow certain molecules to pass through while stopping others
- Examples of differentially permeable membranes include rubber balloons and cell membranes made of phospholipids and proteins
- Dialysis tubing serves as a membrane in the exercise
- Water molecules pass easily through cellulose membranes, while sucrose molecules do not
- Osmosis occurs when water passes through a differentially permeable membrane by diffusion, while sucrose cannot
- The exercise involves measuring the rate of osmosis for different sugar solutions
- Diffusion rates depend on a cell’s surface-to-volume ratio
- The exercise explores how diffusion times depend on the surface-to-volume ratio
- Agar cubes of different sizes are used to measure the diffusion rate of sodium hydroxide
- The surface area, volume, and surface-to-volume ratio of each agar cube are calculated
- The exercise involves observing the diffusion of NaOH into agar/phenolphthalein blocks and making related calculations
- The data sheet for diffusion and osmosis includes questions about the diffusion of air/carbon dioxide in balloons and the permeability of rubber balloons to different gases
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Description
Test your knowledge of diffusion, osmosis, and permeability in biological membranes with this quiz. Explore concepts such as differentially permeable membranes, osmosis, and the factors influencing diffusion rates. Challenge yourself with questions about dialysis tubing, agar cubes, and the diffusion of gases in rubber balloons.
