Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 12, DNA - Assessment - 13.1 RNA - Understand Key Concepts/Think Critically - Page 386: 2

Answer

b.

Work Step by Step

Option a. is incorrect. RNA is single-stranded and does not contain thymine. Option c. is incorrect. RNA is shorter than DNA and only uses four bases. Option d. is incorrect. RNA synthesis occurs in the nucleus, but the strand of RNA does not stay in the nucleus; it travels to the ribosomes for translation to occur. Option b. is correct. RNA consists of a single strand and contains the base uracil instead of thymine.
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