Passive and Active Transport
Flashcard
•
Biology
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is passive transport?
Back
Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.
2.
FLASHCARD QUESTION
Front
What is active transport?
Back
Active transport is the movement of substances against their concentration gradient, requiring energy (usually in the form of ATP).
3.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is a type of passive transport that specifically refers to the movement of water molecules through a selectively permeable membrane.
4.
FLASHCARD QUESTION
Front
What role does the cell membrane play?
Back
The cell membrane regulates what can enter and leave the cell, maintaining the internal environment.
5.
FLASHCARD QUESTION
Front
What is homeostasis?
Back
Homeostasis is the process by which a cell or organism maintains a stable internal environment despite changes in external conditions.
6.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is a type of passive transport that uses protein channels to help move substances across the cell membrane.
7.
FLASHCARD QUESTION
Front
What is a concentration gradient?
Back
A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of substances during diffusion.
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