Microbio Exam #2 Questions And Answers
2026 Update!!!
The total of all chemical reactions and physical
metabolism
processes taking place within cells
larger molecules are degraded or broken down into
smaller molecules, usually with the release of energy
catabolism degradation
exergonic reaction —> ex: aerobic
respiration
larger molecules are built from smaller ones,
resulting in formation of cell structures + requires
energy input
anabolism
biosynthesis
endergonic reaction —> ex:
photosynthesis
1. kinetic: energy of motion
2. potential: stored energy
two types of energy
cells use chemical energy stored in
chemical bonds
chemical energy in chemical bonds of molecules
+ΔG: absorb energy, reaction is not
Gibb’s free energy spontaneous
-ΔG: release energy, reaction is
spontaneous
= G of products - G of reactants
ΔG indicates whether the reaction releases
or absorbs energy
, using an exergonic reaction to drive an endergonic
reaction
energy coupling
overall delta G is -, together reactions
are spontaneous
2026 Update!!!
The total of all chemical reactions and physical
metabolism
processes taking place within cells
larger molecules are degraded or broken down into
smaller molecules, usually with the release of energy
catabolism degradation
exergonic reaction —> ex: aerobic
respiration
larger molecules are built from smaller ones,
resulting in formation of cell structures + requires
energy input
anabolism
biosynthesis
endergonic reaction —> ex:
photosynthesis
1. kinetic: energy of motion
2. potential: stored energy
two types of energy
cells use chemical energy stored in
chemical bonds
chemical energy in chemical bonds of molecules
+ΔG: absorb energy, reaction is not
Gibb’s free energy spontaneous
-ΔG: release energy, reaction is
spontaneous
= G of products - G of reactants
ΔG indicates whether the reaction releases
or absorbs energy
, using an exergonic reaction to drive an endergonic
reaction
energy coupling
overall delta G is -, together reactions
are spontaneous
