Topics: Circulatory / Respiratory Quiz
Which of the following transport oxygen in humans
A. hemoglobin
B. melanin
C. keratin
D. urea
E. bicarbonate ions
Select your answer:

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Vet Terminology › ViewCNS
A. Central nervous system
B. Cubic centimeter
C. Four times daily
D. Date of birth
Skeletal System › View
a fiverlike protein, that makes bone so tough that they can stand stress and strain.
A. collagen
B. joint
C. fixed joints
D. sutures