EXAM: Bio 1500 - Exam 1 (Mizzou-Bush); Questions and
Answers 100% Correct
the passive movement of molecules CORRECT ANS-diffusion
what type of thermal movements is diffusion driven by? CORRECT ANS-Brownian
characteristics of individual molecules? CORRECT ANS--random, unpredictable motion
-not directed to low concentration
-never stops
characteristics of the net movement of all molecules? CORRECT ANS--is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
how does the diffusion time change with the distance traveled? CORRECT ANS-diffusion
time increases with the square of the distance
[EXAMPLE] 2x distance equals.... CORRECT ANS-4 fold time
, EXAM: Bio 1500 - Exam 1 (Mizzou-Bush); Questions and
Answers 100% Correct
[EXAMPLE] 10x distance equals.... CORRECT ANS-100 fold time
diffusion works great within what types of cells? except for which cells? CORRECT ANS--
within cells that lengthen between 1-100 micrometers
-doesn't work good within axons
the capacity to do work or cause motion CORRECT ANS-energy
two types of energy? CORRECT ANS-kinetic & potential
energy due to motion; includes heat, light, and electricity CORRECT ANS-kinetic energy
stored energy due to position; includes chemical energy in bonds CORRECT ANS-potential
energy
what is the First Law of Thermodynamics? CORRECT ANS-energy can neither be created
nor destroyed, but can change from one form to another
Answers 100% Correct
the passive movement of molecules CORRECT ANS-diffusion
what type of thermal movements is diffusion driven by? CORRECT ANS-Brownian
characteristics of individual molecules? CORRECT ANS--random, unpredictable motion
-not directed to low concentration
-never stops
characteristics of the net movement of all molecules? CORRECT ANS--is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
how does the diffusion time change with the distance traveled? CORRECT ANS-diffusion
time increases with the square of the distance
[EXAMPLE] 2x distance equals.... CORRECT ANS-4 fold time
, EXAM: Bio 1500 - Exam 1 (Mizzou-Bush); Questions and
Answers 100% Correct
[EXAMPLE] 10x distance equals.... CORRECT ANS-100 fold time
diffusion works great within what types of cells? except for which cells? CORRECT ANS--
within cells that lengthen between 1-100 micrometers
-doesn't work good within axons
the capacity to do work or cause motion CORRECT ANS-energy
two types of energy? CORRECT ANS-kinetic & potential
energy due to motion; includes heat, light, and electricity CORRECT ANS-kinetic energy
stored energy due to position; includes chemical energy in bonds CORRECT ANS-potential
energy
what is the First Law of Thermodynamics? CORRECT ANS-energy can neither be created
nor destroyed, but can change from one form to another
