Which of the following enzymes does not carry out a posttranslational modification?
a. aminopeptidase
b. histone acetyltransferase
c. dna methyltransferase
d. mek protein kinase
e. angiotensin converting enzyme (ace)

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.