Which of the following layers of the digestive tract is the only one that has direct contact with food
before it is digested?
a. serosa
b. longitudinal muscle
c. mucosa
d. submucosa
e. circular muscle
C
Biology & Microbiology
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When cells begin to move in the embryo in relation to other cells, this is called
A. growth. B. cleavage. C. morphogenesis. D. fertilization. E. differentiation.
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The posterior pituitary secretions produce their effects
a. on the gonads. b. in the thyroid glands. c. on adrenal glands. d. on mammary glands. e. on thirst mechanism.
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The routine laboratory procedure used to classify the bacterial world into two major groups is called the _____.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
In the symbiotic relationship that produces lichens, a(n) __________ feeds the fungus.
A. plant B. mycelium C. bryophyte D. alga
Biology & Microbiology