EXAM:Bio 1500 - Exam 1 (Mizzou-Bush); Questions and Answers 100% Correct

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