Which of the following statements about sexually transmitted diseases (STDs) is false?
A. The incidence of chlamydia has increased as gonorrhea has decreased.
B. Chlamydia is known as the "silent STD."
C. Because chlamydia has both bacterial and viral characteristics, it cannot be treated with antibiotics.
D. Gonorrhea, syphilis, and chlamydia are all transmitted through sexual contact.
E. Syphilis can be transmitted from a mother to her fetus.
Answer: C
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Bioluminescence, as seen in squids, is possible because:
A. specialized cellular organelles of squids carry out a chemical reaction that results in light production. B. symbiotic bacteria housed in specialized organs of the squid are capable of generating light. C. squids produce a fluorescent product during cellular respiration. D. squids produce a mucous layer that reflects light energy.
With which type of microscopy would one observe three-dimensional structure?
A. fluorescence microscopy B. standard light microscopy C. confocal microscopy D. differential-interference light microscopy E. transmission electron microscopy
Match the following items with the correct phrases.
_______1. The most common member or members of the indigenous microflora of the vagina. _______2. The most common member or members of the indigenous microflora of the skin. _______3. The most common member or members of the indigenous microflora of the mouth. a. a-Hemolytic streptococci b. coagulase-negative staphylococci c. Lactobacillus spp. d. Escherichia coli e. Candida albicans
The laboratory receives a bloody, tissue contaminated surgical forceps. Upon removal the laboratory should dispose of the instrument by:
a. placing in the biohazard container. b. placing in a sharps container. c. sending back to surgery for disposal. d. ensuring proper return to surgery for chemical sterilization.