The size and shape of a colony is not useful for identification of a microorganism because most microorganisms produce colonies that are indistinguishable from one another.
Answer the following statement true (T) or false (F)
False
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The E. coli chromosome is a circular double-stranded DNA, 4.6 × 106 in length. If the superhelical density (?) is
-0.05, what is the linking number for this supercoiled molecule? A. 460,000 B. 438,095 C. 416,190 D. 219,050 E. 21,905
In higher organisms, successful mating can occur between members of the same
A. genus. B. species. C. class. D. order.
Circular DNA that is apart from the chromosome DNA in some prokaryotes is called a(n)
A. endospore. B. nucleoid. C. ribosome. D. plasmid. E. nucleus.
Select the best response to the question. ?What antibiotic is administered prophylactically for exposure to anthrax?
A) doxycycline B) penicillin C) levaquin D) ciprofloxacin