Which of the following statements best describes the arrangement of the bases? O The bases point towards each other on the inside of the double helix in a perpendicular orientation. O The bases make up the backbone of the DNA double helix. O The bases point towards each other on the inside of the double helix in a roughly parallel orientation. O The bases point towards the outside of the double helix. Which of the following statements best describes the location of the water molecules in the crystal structure of the DNA double helix? [Hint: make the water molecules visible and color the DNA atoms and bonds gray.] O Water is found mostly in the interior of the double helix. O Water is equally distributed in the interior and exterior of the double helix. O There are no water molecules in this structure.
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- The DNA double helix consists of two strands. - The backbone of each strand is made of sugar and phosphate groups. - The bases (adenine, guanine, cytosine, thymine) are attached to the sugar molecules. - In the double helix, the bases from opposite strands pair Show more…
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Which of the following statements best describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix? The Sugar phosphate backbone is hydrophilic while the bases are hydrophobic. : The Sugar phosphate backbone is hydrophobic while the bases are hydrophilic: The sugar phosphate backbones of the two strands are bonded together: The nitrogen bases are covalently bonded to each other; There is no reason; the structure is just that way:
Sri K.
4) Which of the following statements best describes the DNA double helix? a) The double helical strands are held together by hydrogen bonds between any two bases. b) The double helical strands are held together by hydrogen bonds between G and A and between C and T. c) The double helical strands are held together by hydrogen bonds between G and T and between C and A. d) The double helical strands are held together by hydrogen bonds between G and C and between T and A. 5) In this rendering, what do the ribbons represent? a) the torsional bond angles along the DNA backbone b) the torsional bond angles of the modified ribose components c) the approximate positions of the phosphodiester linkages d) the overall shape of the DNA backbone 6) Which of the following statements best describes the arrangement of the bases? a) The bases point towards the outside of the double helix. b) The bases point towards each other on the inside of the double helix in a perpendicular orientation. c) The bases point towards each other on the inside of the double helix in a roughly parallel orientation. d) The bases make up the backbone of the DNA double helix.
Katlin K.
Which is an incorrect statement concerning the DNA double helix? Explain why. The sugar-phosphate backbone is on the outside of the helix and the base pairs are on the inside. The two strands are identical and proceed in opposite directions. The two strands are linked by hydrogen bonds. Only purine-pyrimidine base pairs can be accommodated.
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