Auxins are used in rooting powders to encourage the formation of well-branched roots
Indicate whether the statement is true or false
TRUE
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Because they interfere with metamorphosis, ecdysone inhibitors could be effective as insecticides
Indicate whether the statement is true or false.
Fecal cultures to isolate Clostridium difficile are plated on:
a. anaerobic blood agar. b. LKV blood agar. c. aerobic 5% sheep blood agar. d. cycloserine cefoxitin fructose agar (CCFA).
Sortase is a protein enzyme of bacteria that
A. directs secretion of proteins across the outer membrane. B. plays a key role in directing proteins to the periplasm. C. catalyzes covalent attachment of some surface proteins to peptidoglycan. D. functions by transporting flagellum proteins to their extracellular site of assembly.
A media is designed that allows only staphylococci to grow. In addition, S. aureus colonies have a yellow halo around them and other staphylococci appear white. This type of media is
A. both selective and differential. B. enriched. C. differential only. D. a reducing media. E. selective only.