Which of the following is not true of red blood cells?
A. They transport oxygen through the blood, but not carbon dioxide.
B. They are also called erythrocytes.
C. They contain hemoglobin for gas transport.
D. The biconcave disc shape makes them look hollow in their centers.
E. All of these are true of red blood cells.
Answer: A
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In a fetus, the foramen ovale is found
A. in the interatrial septum. B. In the interventricular septum. C. between the right atrium and right ventricle. D. between the left atrium and left ventricle.
Which is a sesamoid bone?
A. Patella B. Talus C. Sphenoid D. Cuboid E. Scaphoid
Which organ secretes erythropoietin?
A. Liver B. Kidneys C. Lungs D. Bone marrow
Linoleic acid and linolenic acid are examples of
A) transport proteins. B) lipoproteins. C) essential fatty acids. D) essential amino acids. E) non-essential amino acids