Oral infections with herpes simplex virus 1 can lie dormant in nerve cells for years, and when a patient becomes stressed, the virus is released, forming cold sores on the lips. Where will the virus be while dormant in the nerve cell?
a. Floating in the nerve cell cytoplasm
b. Integrated in the nerve cell chromosomes
c. In the nerve cell membrane
d. Floating outside of the nerve cell, waiting to reinfect it
e. In the blood
b. Integrated in the nerve cell chromosomes
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In flowering plants an ovary is part of a(n)
a. corolla. b. ovule. c. calyx. d. stamen. e. carpel.
After the bacteria were left in the dark for two minutes, the bacteria were
a. evenly distributed throughout the chamber. b. clustered on the algal filament. c. clumped along certain areas of the algal filament. d. actively avoiding the algal filament.
The activation energy of a reaction refers to the minimum amount of energy ____.
A. released by the reaction B. in the reactants C. in the products D. necessary to cause a reaction to proceed on its own E. variation between the energy of the reactants and the energy of the products
Myocardial infarction, also called a heart attack,
A) is caused by excessive blood pressure in the heart. B) actually causes no permanent damage to the heart. C) is unrelated to cigarette smoking. D) is the damage or death of cardiac muscle tissue.