Ch. 7 Flashcards
All chemical reactions and physical workings of the cell
metabolism
Define anabolism
process that results in the synthesis of cell molecules and structures
Define catabolism
reactions that break the bonds of larger molecules into smaller molecules and often release energy
What does an enzyme do?
speeds up the rate of a metabolic reaction
Most enzymes are _____
proteins
A conjugated enzyme is sometimes referred to as a
holoenzyme
What enzyme contains protein and non-protein molecules?
holoenzyme (conjugated enzyme)
The protein portion of an enzyme is called an _____
apoenzyme
Many coenzymes are derived from _____
vitamins
What are constitutive enzymes?
enzymes that are always present and in relatively constant amounts
Enzymes that are turned off or on depending on the amount of substrate present
regulated enzymes
List 3 denaturing agents
high temperature, high ph, or certain chemicals can all denature protein
When a “mimic” occupies the enzyme’s active site, effectively stopping it from working
competitive inhibition
When a molecule binds to an enzymes regulatory site to turn it off
non-competitive inhibition
A means to stop further synthesis of an enzyme somewhere along its pathway
enzyme repression
