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
Deoxyribonucleotides are formed in ( ) level. ( )
A. phosphate
B. diphosphate
C. triphosphate
D. NADP+
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