Osmosis And Diffusion Flashcards
(15 cards)
What is osmosis?
The movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
True or False: Diffusion occurs in solids, liquids, and gases.
True
Fill in the blank: Osmosis specifically refers to the movement of _____ molecules.
water
What is the primary driving force behind diffusion?
The concentration gradient.
Multiple Choice: Which of the following substances can diffuse freely across cell membranes? A) Glucose B) Water C) Ions D) Proteins
B) Water
What does a semipermeable membrane do?
It allows certain molecules to pass through while blocking others.
True or False: Osmosis can occur without the use of energy.
True
Short Answer: Describe the term ‘isotonic solution’.
An isotonic solution has the same solute concentration as another solution, resulting in no net movement of water.
Multiple Choice: In which type of solution will a cell swell? A) Hypertonic B) Isotonic C) Hypotonic
C) Hypotonic
What is diffusion?
The process by which molecules spread from areas of high concentration to areas of low concentration.
Fill in the blank: A _____ solution has a higher solute concentration compared to another solution.
hypertonic
True or False: Osmosis and diffusion are both passive transport processes.
True
Short Answer: What happens to a cell placed in a hypertonic solution?
The cell will lose water and shrink.
Multiple Choice: Which of the following is NOT a factor that affects the rate of diffusion? A) Temperature B) Concentration gradient C) Surface area D) Color
D) Color
What is the role of aquaporins in osmosis?
Aquaporins are water channel proteins that facilitate the rapid transport of water across cell membranes.
