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
You might also like to view...
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?
a) Processes of astrocytes wrap tightly around capillaries in the brain. b) Tight junctions tightly seal endothelial cells of capillaries in the brain. c) Gap junctions tightly seal endothelial cells of capillaries in the brain. d) Spot desmosomes tightly link capillary endothelial cells together. e) The basement membrane of capillaries in the brain contains extremely small pores.
________ is a severe allergic response to an allergen.
Fill in the blank(s) with the appropriate word(s).
The plural of axilla (armpit) is ________, whereas the plural of appendix is ________
A) axilli; appendices B) axillae; appendices C) axillies; appendi D) axillides; appendages