Rheumatic fever is a sequalae of repeated infection with Streptococcus pyogenes. The pathogenesis involved in this complication is molecular mimicry of the valves of the heart

a. true
b. false


Answer: a. true

Biology & Microbiology

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Which statement is true of all protists?

a. They exhibit true multicellularity. b. They are encased in silica-based shells. c. They contain complex organelles and nuclei. d. They live in large colonies of identical protists.

Biology & Microbiology

Which concept helps to explain why close relatives have a varied mix of genetic traits?

a. segregation b. dominance c. incomplete dominance d. independent assortment e. codominance

Biology & Microbiology

Opening and closing of the stomata:a

occur during prolonged periods of drought. b. occur when there is a high concentration of carbon dioxide in the leaf. c. are under hormonal control

d. are triggered by darkness. e. are controlled by the changes in shape of the companion cells.

Biology & Microbiology

_______ is the last step of translation.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology