The complementary base to adenine in a molecule of DNA is ________
A) guanine
B) cytosine
C) leucine
D) thymine
D
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Place the tunics of the GI tract wall in the correct order from superficial to deep.
A. Mucosa, muscularis, submucosa, serosa B. Serosa, submucosa, mucosa, muscularis C. Serosa, muscularis, submucosa, mucosa D. Submucosa, mucosa, serosa, muscularis
The highest concentration of urea should be found in the ________
A) blood B) lymph C) urine D) intracellular fluid E) extracellular fluid
Saliva does not
a. facilitate swallowing b. serve as a solvent for molecules that stimulate taste buds c. hydrolyze glucose to facilitate its absorption by the oral mucosa d. have antibacterial action e. aid speech
This formed element is essential for blood clotting
A) eosinophils B) red blood cells C) platelets D) salts