Endospores represent a challenge to the fields of industrial and medical microbiology because ________.
A. they are resistant to harsh environments, thus allowing survival of endospore-forming organisms under conditions in which non-endospore-forming cells would not survive
B. endospores are resistant to harsh environments, thus allowing survival of endospore-forming organisms under conditions in which non-endospore-forming cells would not survive, and endospore-forming organisms are often dangerous pathogens
C. endospores are significantly smaller than vegetative cells
D. endospore-forming organisms are often dangerous pathogens
Answer: B
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A) skeleton of mammals B) hydrostatic skeletons of earthworms C) exoskeleton of insects D) body hairs of mammals E) skeleton in birds
Which antibody makes up about 80% of the antibodies in the blood?
a. IgA b. IgD c. IgE d. IgG e. IgM
Sperm production is called ____.
A. parthenogenesis B. spermatocytosis C. oocytosis D. oogenesis E. spermatogenesis
The law of segregation states all of the following except
a. factors separate during formation of the gametes. b. each individual has two factors for each trait. c. gametes contain a single factor for each trait. d. factors assort independently of each other by meiosis.