3′terminus of most eukaryotic mRNA is ( )
A. poly U
B. poly G
C. poly A
D. poly C
查看答案
Okazaki fragment is ( )
A. the DNA segment in DNA template strand
B. the DNA segment synthesized on lagging strand
Okazaki fragment is ( )
A. the DNA segment in DNA template strand
B. the DNA segment synthesized on lagging strand
C. the DNA segment synthesized on leading strand
D. the RNA segment synthesized by primase
Whichone is the essential amino acid?()
A. glycine
B. methionine
C. tyrosine
D. Glutamine
Whichdeaminationisthe main form in living organism?()
A. transamination
B. oxidative deamination
C. coupled deamination
D. direct deamination
微信支付 
支付宝支付