What is the key component for storage and transmission of genetic information in nucleic acids:____
A. nucleoside
B. pentose
C. phosphate group
D. base sequence
E. pentose-phosphate backbone
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Which of the following structure causes the UV absorption of nucleic acids:____
A. The hydrogen bond between purine and pyrimidine
B. The glycosidic bond between base and pentose
C. The phosphoester bond between pentose and phosphate
D. The conjugated double bond between purine and pyrimidine ring
E. The phosphodiester bond between nucleotides
What is the direction of genetic information flow of reverse transcription:____
A. DNA→DNA
B. DNA→RNA
C. RNA→DNA
DNA→protein
E. RNA→RNA
What are the basic components of a nucleic acid:____
A. phosphate and ribose
B. nucleoside and nitrogenous base
C. mononucleotide
D. nitrogenous base
E. deoxynucleoside and base
Which of the following may cause non-specific amplification of DNA in PCR reaction?()
A. excessive TaqDNA polymerase
B. excessive primer
C. excessive Mg2+in buffer
D. either of A, B or C
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