Which of the following statements about the structure of nucleic acid is NOT true:____
A. There are major and minor grooves on the surface of double helix
B. There is base stacking force between upper and lower layers of bases
C. The double helix structure only exits in DNA molecule
D. The double helix structure also exits in RNA molecule
E. There is complementary base pairing existing in the double helix structure
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Below are the two molecules that has been heat-denatured, when temperature of the solution was dropping slowly, which one would be easier to recover:____
A. 5’-ATATCATATGATATGTA-3’
B. 5’-CGGTACTCGTGCAGGT-3’
DNA molecule does not include:____
A. phosphodiester bond
B. glycosidic bond
C. hydrogen bond
D. disulphide bond
E. Van der Waals' force
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
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
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