Diffusion Flashcard

Flashcard
•
Science
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is diffusion?
Back
Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.
2.
FLASHCARD QUESTION
Front
What is the difference between active transport and passive transport?
Back
Active transport requires energy to move molecules against their concentration gradient, while passive transport does not require energy and moves molecules along their concentration gradient.
3.
FLASHCARD QUESTION
Front
What type of molecules can pass through the cell membrane via simple diffusion?
Back
Small and nonpolar molecules can pass through the cell membrane via simple diffusion.
4.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is a type of passive transport that allows large, charged, or polar molecules to pass through the cell membrane via integral proteins.
5.
FLASHCARD QUESTION
Front
In which direction do solute molecules move during simple diffusion?
Back
Solute molecules move from areas of high concentration to areas of low concentration.
6.
FLASHCARD QUESTION
Front
What is the role of integral proteins in facilitated diffusion?
Back
Integral proteins provide a pathway for large, charged, or polar molecules to cross the cell membrane.
7.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the diffusion of water molecules across a selectively permeable membrane.
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