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CH 1.4

The Cell In Its Environment

QuestionAnswer
Using ___ ___ cells move substances from low to high concentration. transport proteins
What does active transport require the cell to use? energy
The amount of a substance per unit of volume is called ___. concentration
Carbon dioxide moves out of a cell from high to low concentration by this process. diffusion
This is the term for the diffusion of water. osmosis
Diffusion and osmosis do not require the cell to use energy and therefore are two types of ___. passive transport
What is the term that describes the cell membrane's ability to control what comes in and out of the cell? selectively permeable
Red blood cells placed in very salty water will ___. shrivel
Red blood cells placed in water with no salt will ___. swell
By what process do amoeba and white blood cells take in particles? engulfing
If cells were too large, it would take too long for molecules to reach the ___ of the cell. center
Created by: Mrs. Birkemose
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