
BIO 251 Lab quiz 1
Authored by Lanie Arviso
Biology
University

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23 questions
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1.
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1 min • 1 pt
the random motion of molecules moving is diffusion, define
2.
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1 min • 1 pt
define equilibrium
3.
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1 min • 1 pt
when concentrations are not the same there is a concentration gradient, define the gradient
4.
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1 min • 1 pt
when a difference in concentration exists, ____ will always occur, unless some barrier, like an _______ is placed in the way
5.
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1 min • 1 pt
this molecular movement is ____ and ____. No work need be done to cause diffusion to occur.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
rate of diffusion is affected by molecular weight, concentration gradient, and temperature as follows:
1. Compounds with high molecular weights diffuse ______ (faster/slower) than with low weights
2. the greater the concentration gradient, the _____ (faster/slower) the diffusion
3. the higher the temperature of the system, the ____ the diffusion
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
define osmosis
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