If you were highly allergic to bee stings, which of the following would be dangerous for you to do?
A. wear sweet-smelling perfumes
B. wear red shirts
C. wear dark, drab clothing
D. hum as you work
E. None of the choices provided are dangerous.
A. wear sweet-smelling perfumes
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Which of the following sequences is most commonly found at eukaryotic promoters?
A) TATAAT B) Poly(A) tail C) 7-methyl G cap D) 5'-GU . . . AG-3' E) Shine-Dalgarno sequence
What environment is characterized by high nutrient inputs and by relatively great fluctuations in salinity and
temperature? a. A river b. An estuary c. A freshwater wetland d. Aa large lake e. The oceanic province
A cell is observed under the microscope. What feature will indicate that it is in anaphase?
A) DNA is elongated, not condensed, and difficult to visualize. B) Two separate nuclear membranes are visible. C) Sister chromatids are separating. D) Centrosomes are just beginning to separate and form the spindle.
Which of the following epithelial tissues secretes mucus and is dense with cilia?
A. Squamous B. Cuboidal C. Columnar D. Stratified