What is an array of organisms and their physical environment, all interacting through a one-way flow of energy and a cycling of nutrients?
A. Ecosystem
B. Food web
C. Biomass pyramid
D. Biogeochemical cycle
E. Food chain
Answer: A
Biology & Microbiology
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A bacterium that either partially or fully catabolizes an acyl-homoserine lactone will likely disrupt
A) attenuation. B) chemotaxis. C) endospore formation. D) quorum sensing.
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Species of Veillonella are always parasites of warm-blooded animals and are never found as part of the normal biota.
Answer the following statement true (T) or false (F)
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Which molecule is released in tissues and diffuses to the target cell?
a. thyroid hormone b. insulin c. adrenalin d. prostaglandins e. growth hormone
Biology & Microbiology
Branching of actin filaments can be initiated by
a. Arp2/3 b. formin c. ADR/cofilin d. fibrin e. none of the above
Biology & Microbiology