Which of the following groups contain diarrhea-causing E. coli?
A. enterotoxigenic
B. enteroinvasive
C. enteropathogenic
D. enterohemorrhagic
E. All of the choices are correct
E
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Which of the following statements best explains why microbial geneticists initially focused on regulation of gene expression at the transcriptional, rather than the translational, level?
A. The process of transcription was best understood by researchers at the time. B. The process of synthesizing an mRNA transcript is much less complex than translation of mRNA into protein. C. Cellular regulation of transcription is common to all prokaryotic cells. D. By regulating the first step of protein synthesis, cells conserve the greatest amount of energy.
Gonococci selectively attach to certain epithelial cells by
A. pili. B. flagella. C. cilia. D. actin bridges. E. flagella AND cilia.
When the egg leaves the oviduct, it normally passes directly into the
A. abdominal cavity. B. ovary. C. uterus. D. vas deferens.
Which of the following are examples of mineral deficiency diseases?
A. Osteoporosis and anemia B. Osteoporosis and strep throat C. Anemia and protein deficiency disease D. AIDS and anemia