What is osmosis?
Cells and cell transport

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•
Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
2.
FLASHCARD QUESTION
Front
What is the function of the NA/K pump?
Back
A protein that pumps sodium out of the cell and potassium into the cell, using energy to maintain the electrochemical gradient.
3.
FLASHCARD QUESTION
Front
What is exocytosis?
Back
The process by which a cell expels materials in vesicles that fuse with the cell membrane, releasing their contents outside the cell.
4.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Transport that uses proteins to help move molecules across the membrane without using energy.
5.
FLASHCARD QUESTION
Front
What is a phospholipid?
Back
A type of lipid molecule that is a major component of cell membranes, consisting of two fatty acids, a glycerol, and a phosphate group.
6.
FLASHCARD QUESTION
Front
What is the role of the cell membrane?
Back
To protect the cell, provide structure, and regulate the movement of substances in and out of the cell.
7.
FLASHCARD QUESTION
Front
What is active transport?
Back
The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.
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