Some individual microbes secrete small molecules that induce other microbes to settle nearby. The aggregation that forms responds collectively to stimuli and moves in common to new sites and secretes mucilage. This process is called:
A. pre-sociality
B. muco-aggregation
C. archae sociality
D. quorum sensing
E. mass-settling
D. quorum sensing
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Skeletal muscles are
A. striated, voluntary, and have unbranched fibers. B. striated, voluntary, and have branched fibers. C. striated, involuntary, and have branched fibers. D. nonstriated, voluntary, and have unbranched fibers. E. nonstriated, involuntary, and have branched fibers.
In the expression C6H12O6 ® 2C2H5OH + 2CO2, the products are
A. C6H12O6. B. C6H12O6 + zymase. C. zymase + 2C2H5OH + 2CO2. D. 2C2H5OH + 2CO2.
All of the following represent anchoring junctions EXCEPT
A. tight junctions. B. focal adhesions. C. desmosomes. D. adherens junctions. E. hemidesmosomes.
A species colonizes an island, goes through a phase of exponential growth, and reaches the carrying capacity of the island. At what stage is the growth rate slowest?
A. After reaching K B. Exponential phase C. Initial colonization D. Approaching K