The concentration of the United States auto industry in and around Detroit, MI is an example of a(n)
A) localization economy.
B) external economy.
C) ancillary activity.
D) regional economy.
Answer: A
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If a strain of Neisseria gonorrhoeae is genetically altered such that it no longer has pili, predict how this might affect its virulence.
A. It will be less able to establish infection because it won't be able to adhere to host tissue. B. It will be better able to establish infection and will be more resistant to antibiotics. C. It will be less able to establish infection because it won't be able to survive inside phagocytes. D. It will be less able to establish infection because it will be more susceptible to host factors such as complement.
Using transgenic animal models has its limitations because
A) prokaryotic cells are generally better at producing human proteins. B) bacterial pathogens that affect humans do not affect animals. C) the level of gene expression is significantly higher in animals. D) researchers cannot control where a transgene inserts itself into a genome.
The presence of which hormone in a female’s urine
indicates that she is pregnant? a. luteinizing hormone b. follicle-stimulating hormone c. chorionic gonadotropin d. progesterone e. estrogen
Ribosomes contain which of the following?
a. mRNA, tRNA, and rRNA are all found as part of the ribosome. b. rRNA c. tRNA d. mRNA