Which of the following statements is true of double stranded DNA? The chains have a backbone of linked bases. 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. The double stranded structure is stabilized only by hydrogen bonding,

Which of the following statements is true of double stranded DNA? The chains have a backbone of linked bases. 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. The double stranded structure is stabilized only by hydrogen bonding,

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 9SQ

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Which is not a nucleotide base in DNA? a. adenine b. glutamine c. guanine d. thymine e. cytosine f. all are in DNA
Make the complementary strand for the following DNA template and label both strands as 5 to 3 or 3 to 5 (P = phosphate in the diagram). Draw an arrow showing the direction of synthesis of the new strand. How many hydrogen bonds are in this double strand of DNA? template: PAGGCTCGOH new strand:
Which is not a nucleotide base in DNA? a. adenine b. guanine c. glutamine d. thymine e. cytosine f. All are in DNA.
Which of the following statements about DNA is true? The two strands are held together by hydrogen bonds. In deoxyribose, the 2' C has an OH attached to it. Positive supercoils promote strand separation. Z DNA forms a right-handed helix. One strand is positively charged while the other is negatively charged.
. Which of the following DNA components is found on the exterior of this double-stranded molecule? the nitrogenous bases the pyrimidine bases the ribose sugars the purine bases the phosphates
Which of the following correctly describes a structural feature of DNA or RNA? a. RNA may fold into complex three-dimensional structures necessary for its activity b. RNA & DNA are both usually double stranded c. DNA tends to fold into complex three-dimensional structures required for its activity d. DNA contains a pentose sugar with a hydroxyl group in the 2' position
Which of the following statements concerning a DNA double-helix structures is incorrect? * the two nucleotide strands present are identical hydrogen bonds help hold the two nucleotide strands together complementary base pairing occurs within the double helix no correct response
DNA is less susceptible than RNA to alkaline hydrolysis. Which of the following is the most appropriate explanation? A. DNA is double-strand while RNA is single-stranded. B. DNA has a 2' hydrogen while RNA has a 2' hydroxyl group. C. DNA has tertiary structure while RNA does not have. D. DNA includes thymine bases while RNA includes uracil bases. E. DNA is in nucleus while RNA is not.
What type of bond is the arrow pointing to in this image of DNA? -Hydrogen Bond-Covalent Bond-Ionic Bond
Each DNA double helix has a backbone that consists of alternating ___. covalent and ionic bonds nitrogen-containing bases hydrogen bonds sugar and phosphate molecules covalent and hydrogen bonds
A single molecule (strand) of DNA is half of a double helix. The backbone that makes the polymer of this single molecule of DNA is made of
Which of the following correctly describes the structure of DNA? strands of phosphate-nitrogen backbone, which complementary nitrogenous base pairs bound in a double helix strands of sugar-nitrogen backbone, with complementary deoxyribose base pairs bound in a double helix strands of phosphate-sugar backbone, with complementary nitrogenous base pairs bound in a double helix strands of phosphate-sugar backbone, with complementary nitrogenous base pairs bound in a single helix