The varicella virus is a member of which virus family?
A.
Paramyxo
B.
Toga
C.
Papilloma
D.
Herpes
D.
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In an experiment on wayfinding, indigo buntings were housed in outdoor cages with blotting paper
walls and inkpads on the floors. Which of the following facts demonstrated to researchers that the indigo bunting uses the positions of stars to orient its migration?
a. The birds' inky feet made prints indicating the direction in which they attempted to fly. b. In spring the inky footprints were mostly on the northern side of the cage. c. In fall the inky footprints were mostly on the south side of the cage. d. On cloudy nights the footprint patterns were random. e. In spring and fall, the anterior pituitary of the bird's brain generated a series of hormonal changes.
The first step of the scientific method is to ____
a. perform an experiment b. make a prediction c. test a prediction d. analyze data e. observation of a natural event
________ receptors on macrophages and other cells of the immune system recognize molecules such as lipopolysacchride that are broadly shared by pathogens.
Fill in the blank(s) with the appropriate word(s).
The nucleolus is the site of:
A. ribosome assembly. B. uncoiling and unraveling of chromosomes. C. lipid synthesis. D. protein synthesis. E. chromosome replication.