Passive Diffusion 1/9
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
Kathleen Schulze
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is passive diffusion?
Back
Passive diffusion is the movement of molecules from an area of high concentration to an area of low concentration without the use of energy.
2.
FLASHCARD QUESTION
Front
What is a hypertonic solution?
Back
A hypertonic solution is one where the concentration of solutes is higher outside the cell than inside, causing water to move out of the cell.
3.
FLASHCARD QUESTION
Front
What is a hypotonic solution?
Back
A hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, causing water to move into the cell.
4.
FLASHCARD QUESTION
Front
What is an isotonic solution?
Back
An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.
5.
FLASHCARD QUESTION
Front
In diffusion, materials move from areas of _____________ concentration to areas of _____________ concentration.
Back
high, low
6.
FLASHCARD QUESTION
Front
What is the primary driving force behind passive diffusion?
Back
The concentration gradient, which is the difference in concentration of a substance between two areas.
7.
FLASHCARD QUESTION
Front
What is the difference between passive transport and active transport?
Back
Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.
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