The use of chemical agents to harm or kill microbes is
A. immunology.
B. chemotherapy.
C. epidemiology.
D. serology.
E. biotechnology.
Answer: B
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Which of the following statements about meristems is false?
A. Meristems contain a mixture of differentiated and undifferentiated cells. B. Meristems consist of cells that repeatedly undergo mitosis. C. Meristems are found at the tips of stems. D. Meristems are found at the tips of roots. E. Growth only occurs at meristems and not in other regions of the plant body.
The ____ horizon is usually light in color and contains little organic matter
a. A horizon b. B horizon c. C horizon d. D horizon e. O horizon
What occurs during a lysogenic infection?
A. Viral particles attach to but do not penetrate a host cell. B. Viral particles fill a host cell and cause it to burst. C. Viral genetic material replicates in a host cell but does not cause symptoms. D. The viral prophage DNA is packaged into a protein coat.
________________ increases the ability of the kidneys to produce a concentrated urine.
A. Anti-diuretic hormone (ADH) B. Aldosterone C. Atrial natriuretic hormone D. Angiotensin II