Appear stratified; nuclei of cells at different levels; cells near basement membrane are cuboidal
A. Pseudostratified columnar
B. Simple columnar
C. Simple cuboidal
D. Simple squamous
E. Stratified squamous
F. Transitional
Ans: A. Pseudostratified columnar
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To increase the chance of detecting carcinogens in the Ames test, the test substance is treated with
A. penicillin. B. heat. C. ground-up rat liver. D. reverse transcriptase. E. penicillin AND heat.
Birds carry Histoplasma capsulatum.
Answer the following statement true (T) or false (F)
Stomata are opened when ____ guard cells and they become ____
a. active transport pumps H+ into; turgid b. active transport of H+ stops in; flaccid c. active transport pumps H+ out of; turgid
d. active transport pumps H+ into; flaccid e. active transport of H+ stops in; turgid
In a tide pool, a student encounters an organism with a hard outer covering that contains much calcium carbonate, an open circulatory system, and gills. The organism could potentially be a crab, a shrimp, a barnacle, or a bivalve
The presence of which of the following structures would allow for the most certain identification of the organism? A) a mantle B) a heart C) a body cavity D) a filter-feeding apparatus