Answer
d. both a and c
Work Step by Step
Red blood cells are the disk-shaped cells in blood vessels that carry oxygen. The oxygen in red blood cells is bound to a protein called hemoglobin.
Biology: The Unity and Diversity of Life (14th Edition)
by Starr, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Published by
Brooks/Cole Publishing Co.
ISBN 10:
1305073959
ISBN 13:
978-1-30507-395-1
Chapter 36 - Self-Quiz - Page 639: 6
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