Only one viroid has been found to affect humans,
and it attacks which of the following tissues?
a. liver tissue
b. kidney tissue
c. red blood cells
d. white blood cells
e. all of these
Answer: a
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What is an example of a +/- interaction?
A. competition B. mutualism C. commensalism D. predation E. both competition and parasitism
Viruses differ from cells in that viruses
A) are alive. B) contain DNA or RNA, but not both. C) only reproduce asexually. D) have more genes.
What is the name of a calcium-binding protein that acts in conjunction with calcium to bring about the responses associated with cytoplasmic rises in calcium ion concentration?
a) modulocalcin b) calmodulin c) calcarian d) calpectin e) callistin
Which of the following environmental factors makes microbial populations resistant to antimicrobial agents?
A) Ability to form a biofilm B) Acidic conditions C) Presence of organic matter D) All of the above