Theory of enzymes. [Indicate whether the following statements are true or false
ID: 959859 • Letter: T
Question
Theory of enzymes. [Indicate whether the following statements are true or false by writing T or F in the spaces provided.] _____ Enzymes catalyze reactions by increasing the reaction free energy (G). _____ 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 rate-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 (bimolecular collision of substrate with enzyme’s active site). _____ Drugs that bind to an allosteric site on an enzyme cause a decrease in kcat
Explanation / Answer
Theory of enzymes. [Indicate whether the following statements are true or false by writing T or F in the spaces provided.]
___ F__ Enzymes catalyze reactions by increasing the reaction free energy (G).
__T___ Enzyme are remarkable for their substrate specificity.
F_____ Enzyme can convert light energy into chemical or mechanical energy.
T_____ Catalytic residues in enzymes can include amino acid side chains, RNA bases, and other organic cofactors. _T____ Michaelis-Menten kinetic theory only applies to enzymes with single substrates.
F_____ Enzymes bind transition-state analogs more tightly than substrates.
T_____ At high substrate concentration, reactions are rate-limited by how rapidly enzymes convert substrates into products.
F_____ KM = KD when kcat >> k-1 _____ kcat / KM is equivalent to a second-order rate constant.
F_____ Enzymes can use electrostatics to exceed the rate of diffusion (bimolecular collision of substrate with enzyme’s active site).
T_____ Drugs that bind to an allosteric site on an enzyme cause a decrease in kcat
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