Quiz 7 - Enzymes Flashcards
Drugs and other substances often act by __________ ____________ to slow down or stop enzymes
competitive inhibition
Some enzymes do not use ATP to perform their functions, they easily change the ___________ or enantiomeric state of a ____________
chirality; molecule
T/F Enzymes catalyze biological reactions by specificity and reaction rate
True
An enzyme is mostly composed of protein in a ______________ structure
tertiary
Many factors allow enzymes to be functional: Are ribose sugars a factor?
NO
Many factors allow enzymes to be functional: Are PH, presence of mineral ions and vitamins all factors?
Yes
When proper cofactors are present, an enzyme will function normally. This is called a(n) ____________
holoenzyme
T/F Enzymes only cleave molecules, never link molecules.
False
What role does a coenzyme play in catalysis?
It donates part of its structure to the molecules in the active site
T/F The product of an enzyme splitting is called a substrate?
False - a substrate is the generic name for a molecule that will be worked on by an enzyme
Prosthetic groups are a type of cofactor. Is copper a prosthetic group?
No
Prosthetic groups are a type of cofactor. Are acetyl coenzyme A, heme groups and magnesium prosthetic groups?
Yes
