10 Questions
What is the primary source of energy for diffusion?
The kinetic energy of random movement of molecules and ions
What is the net direction of particle movement in diffusion?
From a region of higher concentration to a region of lower concentration
What is the role of water in osmosis?
As a solvent to aid in digestion, excretion, and transport
What is the primary factor that influences the rate of diffusion?
Concentration gradient
What is the term for the movement of water molecules from a region of higher water potential to a region of lower water potential?
Osmosis
What happens to a cell in an animal when the solute concentration inside the cell increases?
The cell bursts due to an influx of water.
What is the purpose of carrier proteins in active transport?
To pick up specific molecules and transport them against their concentration gradient.
What is the main difference between the effects of solute concentration on plant cells versus animal cells?
Plant cells become turgid when the solute concentration inside the cell increases, while animal cells burst.
What is the function of dialysis tubing in the dialysis tubing experiment?
To act as a selectively permeable membrane.
Why is active transport necessary in certain organisms?
To optimize the uptake of nutrients against their concentration gradient.
Explore the concept of diffusion, which is the net movement of particles from a region of higher concentration to a region of lower concentration. Learn how energy for diffusion comes from the kinetic energy of random movement of molecules and ions, and why the diffusion of gases and solutes is crucial for life processes.
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