_____ is found lining many respiratory passageways and may include specialized mucus secreting goblet cells.
Fill in the blank(s) with the appropriate word(s).
Pseudostratified columnar epithelium
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Which of the following situations would be considered an example of positive regulation of gene expression in a prokaryote?
A. The CAP protein activating the lac operon when lactose is absent and glucose is present. B. The CAP protein activating the lac operon when glucose is absent and lactose is present. C. The repressor protein activating the lac operon when lactose is absent and glucose is present. D. The repressor protein activating the lac operon when glucose is absent and lactose is present.
The epithelial cells lining the intestine have surface projections that increase the area for absorption. These projections are called ________
A) villi B) mucus C) microvilli D) bile
Enzymes are specialized ________ that catalyze chemical reactions within the body
A) nucleic acids B) carbohydrates C) lipids D) proteins
To help avoid a waterborne infection, what would you recommend to a traveler going to South America?
a. vaccination b. bring chlorine with you c. only consume/use bottled water d. only consume canned foods and beverages