Describe hemoglobin
A) Hemoglobin is a protein inside platelets that when activated makes them sticky.
B) Hemoglobin is a lysosomal enzyme inside white blood cells that digests pathogens after phagocytosis.
C) Hemoglobin is a protein inside RBCs that helps maintain their flexibility.
D) Hemoglobin is a protein inside RBCs that binds oxygen.
E) Hemoglobin is an enzyme inside RBCs that converts carbon dioxide to carbonic acid.
Answer: D
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Fill in the blank(s) with the appropriate word(s).
Nutrients that are necessary for health, but that human cells cannot synthesize, are called ________ nutrients.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements best describes the structure of the blood-brain barrier that provides its functional characteristics?
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The plural of axilla (armpit) is ________, whereas the plural of appendix is ________
A) axilli; appendices B) axillae; appendices C) axillies; appendi D) axillides; appendages