Bio 1500 - Exam 1 (Mizzou-Bush) Questions And Answers Rated A+ New Update Assured Satisfaction
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Bio 1500 -
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Bio 1500 -
characteristics of the net movement of all molecules? - -is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
what is the First Law of Thermodynamics? - energy can neither be created nor destroyed, but can
change from one form to another
the passive moveme...
Bio 1500 - Exam 1 (Mizzou-Bush)
characteristics of the net movement of all molecules? - -is predictable
-directed from high to low concentration
-stops when it reaches equilibrium
what is the First Law of Thermodynamics? - energy can neither be created nor destroyed, but can
change from one form to another
the passive movement of molecules - diffusion
what type of thermal movements is diffusion driven by? - Brownian
characteristics of individual molecules? - -random, unpredictable motion
-not directed to low concentration
-never stops
how does the diffusion time change with the distance traveled? - diffusion time increases with the
square of the distance
[EXAMPLE] 2x distance equals.... - 4 fold time
[EXAMPLE] 10x distance equals.... - 100 fold time
diffusion works great within what types of cells? except for which cells? - -within cells that
lengthen between 1-100 micrometers
-doesn't work good within axons
the capacity to do work or cause motion - energy
, two types of energy? - kinetic & potential
energy due to motion; includes heat, light, and electricity - kinetic energy
stored energy due to position; includes chemical energy in bonds - potential energy
_______ wavelengths have more energy and ______ have less energy - short; long
which wavelengths can cause cancer? - -gamma rays
-UV rays
-x rays
describe how we perceive colors. - the colors we perceive are based on which wavelengths strike
our eyes.
what happens when light strikes an object? - it can be reflected, transmitted, or absorbed
casting back a light or heat, mirroring or giving back or showing an image - reflection
when energy is transferred to the molecules of the objects - absorption
when something travels over an object to get to its destination - transmission
the process by which light energy is used to make food molecules from CO2 and H2O -
photosynthesis
where does photosynthesis take place? - chloroplasts
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