Answer
D. A nucleus.
Work Step by Step
The main difference between prokaryotic and eukaryotic cells is that prokaryotic cells lack a nucleus; the membrane-bound structure that houses DNA.
Human Biology, 14 Edition
by Mader, Sylvia; Windelspecht, Michael
Published by
McGraw-Hill Education
ISBN 10:
1-25924-574-8
ISBN 13:
978-1-25924-574-9
Chapter 3 - Assess - Page 66: 3
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