Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 12, Problem 2FIB
Summary Introduction

Introduction:

The nucleotides are the subunits of nucleic acid DNA. A nucleotide is composed of three units: a nitrogenous base, five-carbon sugars, and a phosphate group. The two strands of helical DNA are anti-parallel to each other with nitrogenous bases stacked between the two strands giving it ladder-like appearance.

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DNA is a polymer, which means it is made of repeating subunits called monomers. What are the monomers of DNA called?
DNA consists of ___________ polymers of DNA which are joined together by ___________________ bonds between the nitrogenous bases. Because there are two strands in DNA, and because they spiral around each other, we call DNA a ________________ helix molecule.
DNA contains _________ polynucleotide strands, each composed of _________ kinds of nucleotides. (Provide two numbers.)
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