Which of the following statements is correct (A Adenine and cytosine are pyrimidines (B Adenine and guanine are both purines. c) Adenine is a purine and uridine is a pyrimidine (D Thymidine is a pyrimidine

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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Which of the following statements is correct
A Adenine and cytosine are pyrimidines
Adenine and guanine are both purines.
Adenine is a purine and uridine is a pyrimidine
D
Thymidine is a pyrimidine
Transcribed Image Text:Which of the following statements is correct A Adenine and cytosine are pyrimidines Adenine and guanine are both purines. Adenine is a purine and uridine is a pyrimidine D Thymidine is a pyrimidine
Which of the following statements is true of double stranded DNA?
A The chains have a backbone of linked bases.
B
The double stranded structure is stabilized only by hydrogen bonding,
c Unless the DNA is circular, the 3'OH groups of each chain are at opposite ends of the molecule
The planes of the bases lie parallel to the helix axis.
Transcribed Image Text:Which of the following statements is true of double stranded DNA? A The chains have a backbone of linked bases. B The double stranded structure is stabilized only by hydrogen bonding, c Unless the DNA is circular, the 3'OH groups of each chain are at opposite ends of the molecule The planes of the bases lie parallel to the helix axis.
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