Passive Transport
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•
Biology
•
9th - 10th Grade
•
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 by the cell. It relies on the concentration gradient.
2.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.
3.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is a type of passive transport that uses protein channels to help move molecules across the cell membrane along the concentration gradient.
4.
FLASHCARD QUESTION
Front
What does selectively permeable mean?
Back
Selectively permeable means that a cell membrane allows certain substances to pass through while blocking others, regulating what enters and exits the cell.
5.
FLASHCARD QUESTION
Front
What is the concentration gradient?
Back
The concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of molecules from high to low concentration.
6.
FLASHCARD QUESTION
Front
What is the role of protein channels in facilitated diffusion?
Back
Protein channels provide a pathway for specific molecules to pass through the cell membrane, facilitating their movement along the concentration gradient.
7.
FLASHCARD QUESTION
Front
What happens to a cell in a hypertonic solution?
Back
In a hypertonic solution, water moves out of the cell, causing it to shrink.
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