A Glutamine

B Alanine

C Methionine

D Glycine

A m RNA

B Sn RNA editing

C r RNA

D t RNA

A Enhance the specificity of apoenzyme

B Accept one of the cleavage products

C Activate the substrate

D Increase the active sites of apoenzyme

A 23

B 25

C 28

D 30

A 5

B 8

C 10

D 15

A Pepsin

B Trypsin

C Chymotrypsin

D Carboxypeptidase

A Tyrosine metabolism

B Tryptophan metabolism

C Cysteine metabolism

D Valine metabolism

A Scurvy

B Hunter's syndrome

C Marfan's syndrome

D Osteogenesis imperfecta

A Plasmid

B Virus

C Cosmid

D Phage

A Hydroxylation

B Oxidation

C Glucuronidation

D Methylation