A snake warming itself on a rock is an example of heat transfer by ________
a. thermal radiation
b. convection
c. evaporation
d. conduction
d
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Some proteins that bind to DNA block transcription, whereas other proteins can activate transcription
Indicate whether the statement is true or false.
Media function testing should include all of the following except:
a. check test organism viability for expected growth. b. confirm identity of organism using Gram stain. c. compare performance to previous lot number of media. d. reincubate for additional time period if no growth is evident.
Which feature of Archaea is shared with Bacteria but not with Eukarya?
a. the sequestration of DNA into a nucleus b. the common occurrence of introns c. the chemical structure of the cell walls d. the plasma membrane structure e. a genome comprised of a single, circular molecule of DNA
In a given bacterium, transcription of housekeeping genes is normal, but genes involved in nitrogen metabolism, stress, and chemotaxis are disrupted. Which sigma subunit is intact?
A) ?28 B) ?32 C) ?35 D) ?54 E) ?70