
Passive and Active Transport
Flashcard
•
Biology
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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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. It relies on the concentration gradient, moving substances from areas of higher concentration to areas of lower concentration.
2.
FLASHCARD QUESTION
Front
What is Active Transport?
Back
Active transport is the movement of substances across a cell membrane that requires energy, usually in the form of ATP. It moves substances against their concentration gradient, from areas of lower concentration to areas of higher concentration.
3.
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 until equilibrium is reached.
4.
FLASHCARD QUESTION
Front
What is Osmosis?
Back
Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
5.
FLASHCARD QUESTION
Front
What is Equilibrium in the context of transport?
Back
Equilibrium is the state reached when the concentration of a substance is equal throughout a space, meaning there is no net movement of molecules.
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 without energy.
7.
FLASHCARD QUESTION
Front
What is a Selectively Permeable Membrane?
Back
A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.
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