Multiple Choice
Oxygen molecules are polar and dissolve so poorly in blood plasma that there is NOT enough oxygen to meet the metabolic demands of a vertebrate.However,red blood cells contain ________,which greatly increases the oxygen content of blood.
A) carbon dioxide
B) alveoli
C) nodules
D) hemoglobin
Correct Answer:

Verified
Correct Answer:
Verified
Q9: Blood in a capillary leaving a nearby
Q10: The thickening of the arterial walls over
Q11: Lance Armstrong and a significant group of
Q12: Oxygen molecules are symmetrically formed and nonpolar,so
Q13: A typical human blood pressure is 120/80.Since
Q15: The figures shows a fragment of a
Q16: If skin were the gas exchange surface
Q17: Why do larger animals depend on an
Q18: What status would you assign to an
Q19: Which of the following would have the