Becker's World of the Cell (9th Edition)
Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 3, Problem 3.7PS

Features of Nucleic Acids. For each of the following features of nucleic acids, indicate whether it is true of DNA only (D), of RNA only (R), of both DNA and RNA (DR), or of neither (N).

  1. (a) Contains the base adenine.
  2. (b) Contains the nucleotide deoxythymidine monophosphate.
  3. (c) Occurs only in single-stranded form.
  4. (d) Is involved in the process of protein synthesis in the cytoplasm of the cells in the liver.
  5. (e) Is synthesized by a process that involves base pairing.
  6. (f) Is an inherently directional molecule, with an N-terminus on one end and a C-terminus on the other end.
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This is DNA. Locate the nitrogen bases (nitrogens are blue). Where are they located in the molecule?Locate the sugars and phosphates, and describe their location.  Adjacent nucleotides are linked by covalent phosphodiester bonds (-O-P-O-) produced by a condensation reaction. What parts of the adjacent nucleotides are linked by phosphodiester bonds?Two nitrogenous bases extending towards the middle of the double helix. Are there any covalent bonds between these bases?If there are no covalent bonds between these bases, what other kinds of bonds might hold the two strands of the double helix together?
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