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7Sci Chapter 14-1

Cell In Action Section 1

What is the movement of water through a membrane called? osmosis
What are particles moving across a cell membrane without using energy called? passive transport
What are the passageways in a cell membrane? channels
What is the movement of particles from an area of low to an area of high concentration across a cell membrane? active transport
What are two examples of passive transport? diffusion and osmosis
What does a cell need to transport particles by active transport? energy
What are the channels in a cell membrane made with? proteins
What process is important to cell functions? osmosis
What is the fluids mostly made of that surround and fill a cell? water
What is the process by which a cell membrane surrounds and encloses a large particle to bring it into a cell? endocytosis
What are the particles called that make up water? molecules
What is the result of osmosis? water particles move to where they are less concentrated
What is the process by which a cell membrane gets rid of large particles? exocytosis
What part of the cell do materials pass through to get into and out of the cell? cell membrane
What is a vesicle? It is a sac formed from a piece of cell membrane, often used to move large particles into or out of a cell.
When does a cell not need to use energy? diffusion
When wilted celery is soaked in water, it becomes crisp again due to what? osmosis
What do all organisms need in order to live? energy and raw materials
What do all organisms need to get rid of in order to live? wastes
What helps wilted plants become firm during osmosis? water
What does it require to move materials through a cell membrane by active transport? energy
Created by: ndmsteach