Match the following items with the correct phrases.
_______1. A superinfection with this organism can lead to antibiotic-associated diarrhea and pseudomembranous colitis.
_______2. The only drugs that can be used to treat infections caused by these Gram-positive cocci in clusters are vancomycin, Synercid and Zyvox; unfortunately, some strains have even developed resistance to these antibiotics.
_______3. “Superbugs” known as VRE are vancomycin-resistant strains of __________.
a. Enterococcus spp.
b. MRSA
c. Clostridium difficile
d. Escherichia coli
e. Enterobacter spp.
1. c. Clostridium difficile
2. b. MRSA
3. a. Enterococcus spp.
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The accumulation of free oxygen in the atmosphere ____
a. was a result of the accumulation of a byproduct of a type of photosynthesis b. caused the further spontaneous generation of life c. provided the opportunity to extract more energy through anaerobic respiration d. occurred immediately after the earth was formed e. allowed for DNA to replace RNA as the primary data storage molecule
Which statement accurately describes the properties of sound?
a. The frequency of a sound determines the loudness. b. The amplitude of a sound determines its pitch. c. The amplitude of a sound is the number of waves per second. d. A soft sound has a greater amplitude than a loud sound. e. A high note and a low note with the same amplitude are equally loud.
In a sequenced genome, candidate protein-encoding genes are identified by searching for
A) STRs. B) RFLPs. C) ESTs. D) SNPs. E) ORFs.
Each actin molecule is shaped like a golf club, with a straight portion ending in a globular head.
Answer the following statement true (T) or false (F)