Cell Transport
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the process by which water molecules diffuse across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
2.
FLASHCARD QUESTION
Front
What is diffusion?
Back
Diffusion is the movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.
3.
FLASHCARD QUESTION
Front
What is the difference between osmosis and diffusion?
Back
Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of particles.
4.
FLASHCARD QUESTION
Front
What does it mean for a solution to be isotonic?
Back
An isotonic solution has the same concentration of solutes as another solution, resulting in no net movement of water across the membrane.
5.
FLASHCARD QUESTION
Front
What is active transport?
Back
Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).
6.
FLASHCARD QUESTION
Front
Why is osmosis important for cells?
Back
Osmosis is crucial for maintaining cell turgor pressure, which helps keep cells rigid and supports plant structure.
7.
FLASHCARD QUESTION
Front
What is a selectively permeable membrane?
Back
A selectively permeable membrane allows certain molecules to pass through while blocking others, crucial for maintaining homeostasis in cells.
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