Ch5 bio quiz- enzymes :0 Flashcards
Energy
the capacity to cause change or do work
kinetic
-the energy of motion
-heat/ thermal
-associated with the movement of atoms and molecules
potential
energy that matter posesses as a result of its location or structure
- in glucose, it’s in the bonds
thermodynamics
the study of energy transformations that occur in a collection of matter
first law
law of energy conservation
entropy
measure of disorder
some energy is always made into heat
the more random things are, the greater the entropy
2nd law
all energy conversions increase the entropy of the universe
exergonic reaction
reaction that reduces energy
-related to exothermic
-energy goes from system to surroundings
endergonic reaction
reaction that requires energy
-related to endothermic
- energy goes from surroundings to system
metabolism
general term that is for total chemical reactions in a given organism
metabolic pathway
series of chemical reactions that either build or break down molecules
ATP
adenosene triphosphate
powers nearly all levels of cellular work
- phosphate bonds are weak, breaking them gives off energy
phosphorylation
the adding of a phosphate group to a molecule
cellular work
1) chemical work- making bonds
2) material work- movement
3) transportation- active transport
enzymes lower
activation energy
activation energy
energy that is needed to be absorbed to weaken bonds so they can break and react
all enzymes are specific for a certain
sub- strate
substitutes
bind to an enzyme via an active site
co factor
non protein assistant for enzymes
competitive inhibition
reduce enzymes production by blocking access to molecules to active site
non- competitive inhibitor
binds allsoteric, making a change to active site’s configuration.
feedback mechanism
- negative- product acts as an inhibition
- positive- product acts as a catalyst
