Oxygen binds to the _______ portion of hemoglobin.
A. globin
B. oxyhemoglobin
C. iron atom
D. amino acid
Answer: C. iron atom
You might also like to view...
The thin extracellular layer, consisting of the basal and reticular lamina, that anchors epithelial cells to underlying connective tissue is called the
a) basement membrane. b) tunica adventitia. c) tight junction. d) adherens junctions. e) gap junctions.
A thickening of the frontal bone that helps protect the eye is the
A) optic canal. B) supra-orbital margin. C) superior orbital fissure. D) frontal suture. E) frontal sinuses.
Prominent ridges on the inner wall of the stomach are called gastric __________.
Fill in the blank(s) with the appropriate word(s).
Oliver received a blow to the left side of his head, just anterior to his ear. Which of the following digestive structures was likely affected?
A. Sublingual salivary gland B. Submandibular salivary gland C. Pharynx D. Parotid salivary gland