N. gonorrhoeae is spread by:
a. person-to-person nosocomial spread by respiratory droplets.
b. person-to-person spread by sexual contact.
c. from infected mother to newborn during birth.
d. B and C only.
D
Epidemiology. N. gonorrhoeae is not part of normal microbiota. It is only found on mucous membranes of genitalia, anorectal area, oropharynx, or conjunctiva at the time of infec-tion. It is spread from person-to-person by sexual contact, including rectal intercourse and oro-genital sex. It may also be spread from infected mother to newborn during birth. Asymptomatic carriers are a significant reservoir for increased disease transmission.
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Coevolution between predator and prey suggests
A) as prey decrease in number, predators will switch prey. B) as predators become smarter at catching prey, prey will become smarter at escaping predation. C) as predators feed on prey, prey will become more palatable over time. D) as predators drive down prey populations, they become worse at catching prey.
Bacteria cannot be classified using the biological definition of a species for which reason?
A. The DNA sequences of all bacteria are more than 97% identical. B. Bacteria cannot reproduce. C. Bacteria are present everywhere and cannot be reproductively isolated from other bacteria. D. Bacteria are asexual. E. Bacteria do not evolve.
Which one of the following rows correctly identifies a monocot?
A. Row 1
B. Row 2
C. Row 3
D. Row 4
One characteristic shared by sucrose, lactose, and maltose is that _____.
A. they are all polysaccharides B. they are all monosaccharides C. they are all disaccharides D. they all contain fructose E. they are all indigestible by humans