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bio lect exam ii
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enviro heat transfer
Conduction
direct transfer of thermal energy
enviro heat transfer
Convection
thermal energy absorbed by medium
enviro heat transfer
heat if evaporation
evap water absorbs energy
Homeostasis & Thermoregulation
Body Internal Enivroment
A Dynamic constancy
Homeostasis & Thermoregulation
the whole is greater than the sum of its parts
Homeostasis
maintaining a constant, optimal internal enviro
why is Homeostasis so important?
Proteins
-Including enzymes and other molecular machines that runs everything
why is Homeostasis so important?
Proteins
are very sensitive to deviation in conditions
-esp. temp & pH
-change protein shape => /fx
Conformers & Regulators
Conformers
allow internal enviro to conform to external
Conformers & Regulators
Regulators
use control mechanism to maintain constant internal enviro desipte external variation
Conformers & Regulators
NOTE
an organism may be different for different variables
(same fish may B thermoconformer & Osmoregulator)
Conformers vs Homestasis?
How can thay B Homestsic & conforming?
live in a stable enviro
(@ least w/ respect to conformed variable)
&/ or
Conformers vs Homestasis?
How can thay B Homestsic & conforming?
be able to make new versin of proteins for esh variation
-require larger genome
-trnsition to new enviro must B gradual to allow sufficient expression of new proteins
Author
meotin626
ID
46568
Card Set
bio lect exam ii
Description
bio lect exam ii
Updated
2010-11-01T22:19:46Z
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