Which one of the following statements is true regarding antimicrobial therapy and susceptibility testing?
a. Cephalosporins and macrolides are inef-fective against M. catarrhalis.
b. Resistance to quinolones is emerging in strains of N. gonorrhoeae.
c. Most Neisseria spp. are resistant to peni-cillin.
d. Most strains of N. meningitidis are resis-tant to penicillin.
B
Quinolones were widely used to treat gonorrhea, but resistance to these agents has emerged (quinolone-resistant N. gonorrhoeae [QRNG]); therefore, quinolone agents are no longer rec-ommended for the treatment of gonorrhea.
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Crick and his colleagues proposed that the genetic code consists of a series of blocks of information, called ______, each corresponding to one amino acid in an encoded protein.
A. alleles B. codons C. genes D. polypeptides
________ (PC) is a copper-containing protein that, like plastoquinol, is a mobile electron carrier.
Fill in the blank(s) with the appropriate word(s).
Albino corn has no chlorophyll. You would expect albino corn seedlings to
A) fail to thrive because they cannot capture light energy. B) synthesize glucose indefinitely, using stored ATP and NADPH. C) use accessory pigments such as carotenoids to capture light. D) switch from the C4 pathway to the crassulacean acid metabolism (CAM) pathway. E) capture light energy in the white end of the visible light spectrum.
In a selectively permeable membrane, gases
What will be an ideal response?