__________ or __________ extend from many prokaryotic cells and serve in attachment and motility.

Fill in the blank(s) with the appropriate word(s).


Flagella; pili

Biology & Microbiology

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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

Biology & Microbiology

Four of the five choices listed below are haploid

Select the exception. a. gametophyte b. zygote c. sperm d. microspore e. gamete

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology