The most common urinary infection is
A. vulvovaginal candidiasis.
B. toxic shock syndrome.
C. bacterial cystitis.
D. bacterial vaginosis.
C.
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Special structure found in seeds that are dispersed by ants is called:a
glyoxisomes. b. elaiosomes. c. peroxisome. d. elatoir. e. lysosome
Many eukaryotes have a DNA glycosylase that specifically removes T residues from DNA when paired with G. Why is it better to repair the G-T pairing to G-C by removing the T than to remove the G and form an A-T pair?
A. G-C pairs can form three hydrogen bonds between them and are therefore stronger. B. Oxidative damage to guanine by alkylation is the most common reason for G-T pairs, so removal of the T will maintain the original G-C pair. C. T bases easily tautomerize into C bases, so removing the T will make sure the pair stays in its original form. D. G-C basepairs occur more frequently in cells. E. All of the choices provided are potential reasons.
Apparently healthy people who may transmit a pathogen they harbor are called
A. vectors. B. fomites. C. vehicles. D. carriers.
Which one of the following is not an element found in DNA?
A) oxygen B) sulfur C) nitrogen D) phosphorous E) hydrogen