DNA denaturation refer to:____
A. Depolymeriztion of polynucleotide chains
B. DNA molecule turns to double helix from supercoil
C. The phosphodiester bond in the DNA molecule has been broken
D. The hydrogen bond between bases has been broken
E. The complete hydrolysis of the nucleic acids
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Which of the following statement is correct about the reason that nucleic acid has the ability to absorb UV:____
A. The conjugated double bond between purine and pyrimidine
B. Ribose is connected to purine and pyrimidine
C. There are nitrogen atoms inside purine and pyrimidine
D. Ribose and phosphate is connected to purine and pyrimidine
E. Phosphate group is connected to purine and pyrimidine
Which is the maximum UV absorption wavelength of nucleic acids:____
A. 280nm
B. 260nm
C. 240nm
D. 220nm
E. 490nm
Which of the following DNA molecule has a relatively higher Tm value?____
A. 5’-ATATCATATGATATGTA-3’
B. 5’-CGGTACTCGTGCAGGT-3’
The hybridization of nucleic acid could happen between DNA and RNA, DNA and DNA, then, which of the following RNA sequence could hybridize with single strand DNA with sequence 5’-CGGTA-3’:____
A. 5’-UACCG-3’
B. 5’-GCCAU-3’
C. 5’-GCCUU-3’
D. 5’-AUCCG-3’
E. 5’-UAGGC-3’
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