Discussion:
Biochemistry multiple choice, enzymes
1. Which of the following is true?
a. Enzymes force reactions to proceed in only one direction
b. Enzymes alter the equilibrium of the reaction
c. Enzymes alter the standard free energy of the reaction.
d. All of the above.
e. None of the above
2. Which of the following is NOT a way in which enzymes stabilize a transition state?
a. causing the temperature of the environment to increase
b. covalent catalysis
c. using binding energy
d. general acid-base catalysis
e. catalysis by approximation
3. How is trypsin activity turned off?
a. by dephosphorylation
b. by binding an inhibitor protein
c. by a second cleavage
d. All of the above.
e. None of the above.
4. To which amino acid residues in glycoproteins are the sugars commonly linked?
a. tyrosine and asparagine
b. serine, threonine, and asparagine
c. serine, tyrosine, and asparagine
d. serine and threonine
e. a and d.