Cell Transport Flashcard

Flashcard
•
Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is active transport?
Back
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).
2.
FLASHCARD QUESTION
Front
What special channel allows water to move through the membrane during osmosis?
Back
Aquaporin is a special channel that facilitates the movement of water through the cell membrane during osmosis.
3.
FLASHCARD QUESTION
Front
What happens to cells in an isotonic solution?
Back
Cells are 'happy' in an isotonic solution because the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.
4.
FLASHCARD QUESTION
Front
Does passive transport require ATP?
Back
No, passive transport does not require ATP; it relies on the natural movement of molecules from high to low concentration.
5.
FLASHCARD QUESTION
Front
What type of transport is used for particles too large to pass through the membrane without energy?
Back
Facilitated diffusion is used for particles too large to pass through the membrane, requiring assistance from channel proteins but no energy.
6.
FLASHCARD QUESTION
Front
Define osmosis.
Back
Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
7.
FLASHCARD QUESTION
Front
What is the difference between active transport and passive transport?
Back
Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.
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