Bio 1500 - Exam 1 (Mizzou-Bush)
Questions All Answered Correctly.
the passive movement of molecules - Answer diffusion
what type of thermal movements is diffusion driven by? - Answer Brownian
characteristics of individual molecules? - Answer -random, unpredictable motion
-not directed to low concentration
-never stops
characteristics of the net movement of all molecules? - Answer -is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
how does the diffusion time change with the distance traveled? - Answer diffusion time
increases with the square of the distance
[EXAMPLE] 2x distance equals.... - Answer 4 fold time
[EXAMPLE] 10x distance equals.... - Answer 100 fold time
diffusion works great within what types of cells? except for which cells? - Answer -within
cells that lengthen between 1-100 micrometers
-doesn't work good within axons
the capacity to do work or cause motion - Answer energy
two types of energy? - Answer kinetic & potential
energy due to motion; includes heat, light, and electricity - Answer kinetic energy
stored energy due to position; includes chemical energy in bonds - Answer potential energy
Questions All Answered Correctly.
the passive movement of molecules - Answer diffusion
what type of thermal movements is diffusion driven by? - Answer Brownian
characteristics of individual molecules? - Answer -random, unpredictable motion
-not directed to low concentration
-never stops
characteristics of the net movement of all molecules? - Answer -is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
how does the diffusion time change with the distance traveled? - Answer diffusion time
increases with the square of the distance
[EXAMPLE] 2x distance equals.... - Answer 4 fold time
[EXAMPLE] 10x distance equals.... - Answer 100 fold time
diffusion works great within what types of cells? except for which cells? - Answer -within
cells that lengthen between 1-100 micrometers
-doesn't work good within axons
the capacity to do work or cause motion - Answer energy
two types of energy? - Answer kinetic & potential
energy due to motion; includes heat, light, and electricity - Answer kinetic energy
stored energy due to position; includes chemical energy in bonds - Answer potential energy
