BIO midterm Energy, chemical reaction, cell respiration Flashcards
what does energy do at the cellular/tissue level
move muscle tissue and blood
absorb nutrients/transport waste
exchange respiratory gases
synthesize new molecules
regulate cell ion concentrations
form ATP
ATP
Energy currency of cells
Energy is..
the capacity to do work.
contains two Classes:
Potential and kinetic energy
Potential energy
Energy positioned or stored
Kinetic energy
energy of motion
Can potential and kinetic energy be converted from one class to the other?
yes
concentration gradient exist across what?
the plasma membrane
where is there a boundary (inni outi)
between inside and outside the cell
electrons move where?
from a high to low energy shell
potential energy must_____
convert to kinetic energy before working
chemical energy
one form of potential energy stored in a molecules chemical bonds and released when bonds break
energy in chemical bonds are used for
movement
molecules
synthesis
concentration gradients
Molecules that function in chemical energy storage: (Think prefix for 3)
Triglyceride’s
glucose
ATP
Kinetic energy forms:
Electric energy
mechanical energy
sound energy
radiant energy
Heat
Thermodynamics
study of energy transformations as chemical energy converts to mechanical energy heat is produced
2 laws for thermodynamics
energy can not be created or destroyed only change in form
when transformed, energy is lost to heat
usable energy decreases
ex: jumping around to warm up when cold
Metabolism
biochem reaction to living organisms
chemical reactions happen when
when chemical bonds in existing molecular structures are broken known as a chemical equation