Which statement regarding DNA structure is false? A. Each strand of nucleotides contains a 5' and a 3' end B. Two hydrogen bonds form between cytosine and guanine C. Thymine will pair with adenine D. Ribose is simultaneously bound to a nitrogenous base pair and two phosphate groups
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QUESTION 17 Which statement is NOT true of all naturally occurring DNA? A. The ratio A+T/G+C is constant for all natural DNAs. B. Two hydrogen bonds form between A and T. C. Deoxyribose units are connected by 3',5'-phosphodiester bonds. D. The amount of A always equals the amount of T. E. The two complementary strands are antiparallel. QUESTION 18 The ribonucleotide polymer (5 ')GTGATCAAGC(3 ') could only form a double-stranded structure with: A. (5')GCTTGATCAC(3'). B. (5')CACTAGTTCG(3'). C. (5')GCCTAGTTUG(3'). D. (5')CACUTTCGCCC(3'). E. (5')CACUAGUUCG(3').
Sri K.
Which of the following statements about DNA is false? Phosphate is linked to the $5^{\prime}$ and $3^{\prime}$ carbons of adjacent deoxyribose molecules. b. $\quad$ DNA is bidirectional in its synthesis. c. Each side of the helix is antiparallel to the other. d. The binding of adenine to thymine is through three hydrogen bonds. e. Avery identified DNA as the transforming factor in crosses between smooth and rough bacteria.
Adi S.
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