energy, enzymes, cellular metabolism Flashcards
constant occuring chemical reactions to produce energy
metabolism
the ability to do work
energy
metabolic reactions that break down molecules
catabolism
synthesis of molecules
anabolism
reactions that are spontaneous and release energy
exergonic reactions
require energy input for reaction
endergonic
orderly, step-wise series of chem reactions
metabolic pathways
metabolic pathways can be?
linear or cyclical
what can speed up chem reactions?
enzymes
substrates are?
reactants
how does an enzyme work?
lowers activation energy needed for reaction
what limits the rate of reaction?
concentration of enzymes
molecules that bind to enzyme to prevent/reduce rate of substrate binding to enzyme
inhibitors
a molecule that looks like subtrate can compete for space at active site
competitive inhibition
inhibitor binding to enzyme will?
slow down reaction rate can
can be reversible or irreversible
inhibitor binds to another place on enzymes (NOT active site)
non competetive/ allosteric inhibition
examples of inhibition
medicine/poison, slow down metabolic pathway
made of a protein part (apoenzyme)
+
non protein group (coenzyme)
enzymes
examples of coenzyme
vitamins, large non-polar molecules