Which cells secrete mucus?
A) type II alveolar cells
B) ciliated cells
C) alveolar macrophages
D) type I alveolar cells
E) goblet cells
Answer: E) goblet cells
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A ____ is formed when a ____ is dissolved in a ____
a. solution; solute; solvent b. solute; solvent; solution c. solution; solvent; solute d. solvent; solution; solute e. solvent; solute; solution
What is the apical meristem?
a. mitotically active tip of the root or shoot b. midvein of a leaf through which wastes and nutrients circulate c. mitotically inactive base of the root d. fibrous bract that protects the outside of a bud before flowering
Which of the following designates a normal human
female? a. XXY b. XY c. XX d. XYY e. XO
The end product of somatic recombination in B cells is an antibody consisting of
a. two heavy-chain proteins and one light-chain protein. b. two heavy-chain proteins and two light-chain proteins. c. one heavy-chain protein and two light-chain proteins. d. all of the above.