Theory of enzymes: True or False: ___ Enzymes catalyze reactions by increasing t

ID: 959688 • Letter: T

Question

Theory of enzymes:

True or False:

___ Enzymes catalyze reactions by increasing the reaction free energy

___ Enzyme are remarkable for their substrate specificity.

___ Enzyme can convert light energy into chemical or mechanical energy

___ Catalytic residues in enzymes can include amino acid side chains, RNA bases, and other organic cofactors

___ Michaelis-Menten kinetic theory only applies to enzymes with single substrates

___ Enzymes bind transition-state analogs more tightly than substrates

___ At high substrate concentration, reactions are rare-limited by how rapidly enzymes convert substrates into products

___ Km=KD when kcat>>k-1

___ kcat/KM is equivalent to a second-order rate constant

___ Enzymes can use electrostatics to exceed the rate of diffusion (bimolecualr collision of substrate with enzyme's active site)

___ Drugs that bind to an allosteric site on an enzyme cause a decrease in kcat

False Enzymes catalyze reactions by increasing the reaction free energy

True Enzymes are remarkable for their substrate specificity.

False Enzyme can convert light energy into chemical or mechanical energy

True Catalytic residues in enzymes can include amino acid side chains, RNA bases, and other organic cofactors

False Michaelis-Menten kinetic theory only applies to enzymes with single substrates

False Enzymes bind transition-state analogs more tightly than substrates

True At high substrate concentration, reactions are rare - limited by how rapidly enzymes convert substrates into products

True Km=KD when kcat>>k-1

True kcat/KM is equivalent to a second-order rate constant

False Enzymes can use electrostatics to exceed the rate of diffusion (bimolecular collision of substrate with enzyme's active site)

False Drugs that bind to an allosteric site on an enzyme cause a decrease in kcat

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