__________ or __________ extend from many prokaryotic cells and serve in attachment and motility.
Fill in the blank(s) with the appropriate word(s).
Flagella; pili
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The type of relationship between nitrogen fixing bacteria and the roots of various plants is ________
a. commensalistic b. parasitic c. None of these d. predatory e. mutually beneficial
Four of the five choices listed below are haploid
Select the exception. a. gametophyte b. zygote c. sperm d. microspore e. gamete
In prokaryotes, the RNA polymerase holoenzyme consists of
A. the core polymerase plus two alpha subunits, two beta subunits, and a sigma subunit. B. two alpha subunits, two beta subunits, and two sigma subunits. C. the core polymerase plus a sigma subunit. D. the core polymerase plus two beta subunits. E. the core polymerase plus two alpha subunits.
CSF contains high levels of complement and circulating antibodies to prevent infection of the brain and spinal cord
Indicate whether the statement is true or false