Steptococcus pyogenes causes all of the following except

A. necrotizing fasciitis
B. erysipelas
C. impetigo
D. scarlet fever
E. scalded skin syndrome


Ans: E. scalded skin syndrome

Biology & Microbiology

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You discover an organism that has a nucleus but no mitochondria. This organism could be a(n) ____

a. euglenoid b. diplomonad c. kinetoplastid d. ciliate e. dinoflagellate

Biology & Microbiology

The nucleotide most closely associated with energy transfer is:

a. cyclic AMP b. FAD c. NAD d. ATP e. DNA

Biology & Microbiology

An example of descriptive epidemiology is __________.

A) a study comparing disease rates in vaccinated and unvaccinated individuals B) Florence Nightingale's studies of disease transmission in soldiers and civilians during the Crimean War C) John Snow's study of the London cholera outbreak in 1848-1849 D) the first report of a disease occurrence E) comparison of drug effectiveness in two groups of patients

Biology & Microbiology

Consider the following DNA sequences for four different species:1:  AATCG2:  TAATG    3:  ATACC4:  ATAGGBased on the principle of parsimony, which species shares a most recent common ancestor with a species having the sequence TTACC?

A. Species 3 B. Species 2 C. Species 4 D. Species 1

Biology & Microbiology