Please select the pathogen from the genus Streptococcus that correctly represents the most serious pathogen of this group.

A) Group A beta-hemolytic S. pneumoniae
B) Group A beta-hemolytic S. pyogenes
C) Group A beta-hemolytic S. agalactiae
D) Group B alpha-hemolytic S. pyogenes


B) Group A beta-hemolytic S. pyogenes

Biology & Microbiology

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The five-year survival rate of ____________________ cancer is only 13%. Fill in the blank(s) with the appropriate word(s)

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How many structural genes are under the control of the trp operon promoter?

A) 1 B) 2 C) 3 D) 4 E) 5

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Retroviruses or RNA tumor viruses use __________ to make DNA

a. DNA polymerase b. DNA-dependent RNA polymerase c. RNA polymerase d. primase e. reverse transcriptase

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Your abdominal cavity, which contains most of your major organs:a

is a pseudocoelom lined by endoderm. b. is a pseudocoelom lined by mesoderm. c. is a coelom lined by endoderm and mesoderm. d. is a coelom lined by ectoderm. e. is a coelom lined by mesoderm.

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