sperm cells get energy to power heir movement from __ contributed by the __
Fill in the blank(s) with the appropriate word(s).
fructose; seminal vesicles
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Clonal selection requires the presence of foreign antigens.
Answer the following statement true (T) or false (F)
The process of programmed cell death is
a. exocytosis. b. apoptosis. c. system acquired resistance. d. metastasis. e. unknown.
Antimicrobial agents that damage nucleic acids also affect
A) the cell wall. B) the cell membrane. C) the viral envelope. D) endospores. E) protein synthesis.
Which of the following sets of characteristics describes the highest level of threat potential from biological weapons?
A. a waterborne toxin that is easily introduced into public water supplies and does not replicate in humans B. a pathogen of livestock transmitted by contact with infected animals but not infected people C. a human pathogen easily produced as an aerosol and transmissible by respiratory aerosols D. a pathogen of wheat that could be delivered using crop dusters E. a microbe that can be introduced into food during packaging and withstands refrigerator temperatures but not typical cooking temperatures