What is active transport?
Cell Transport-1

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Biology
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9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The movement of molecules against a concentration gradient, requiring energy.
2.
FLASHCARD QUESTION
Front
What is simple diffusion?
Back
The movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.
3.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
The process of passive transport of molecules across a membrane via specific transmembrane integral proteins.
4.
FLASHCARD QUESTION
Front
What is osmosis?
Back
The diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
5.
FLASHCARD QUESTION
Front
What does passive transport require?
Back
Passive transport requires no energy.
6.
FLASHCARD QUESTION
Front
What is a concentration gradient?
Back
A difference in the concentration of a substance across a space.
7.
FLASHCARD QUESTION
Front
What is the role of channel proteins in facilitated diffusion?
Back
Channel proteins help transport particles that are too large to enter the membrane without using energy.
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