Why doesn't a tapeworm have a mouth on its scolex?
A. The mouth is on the proglottids
B. Endoparasites don't need a mouth
C. The mouth is located at the end of the pharynx
D. Tapeworms use a radula instead of a mouth to feed
B. Endoparasites don't need a mouth
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When streaking for isolation and utilizing semi-quantitative methods, the numbers of colonial growth in successive quadrants correlates directly with:
a. the microbiologist's streaking technique. b. the relative amount of organism present in the original specimen. c. the ability of the organism to grow on the media. d. the type of incubation conditions.
The meninges are four chambers in the brain that are filled with cerebrospinal fluid, which circulates through them to protect the brain.
a. true b. false
In an operon, the ________ acts as an on/off switch
A) operator B) promoter C) activator D) repressor
Disadvantages of continuous cell cultures include
A. they only grow for a limited number of generations. B. the expense of preparation. C. they may be significantly different genetically from the original source animal. D. viruses do not reliably infect them. E. they are both expensive and have a limited number of divisions.