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
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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.
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
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.
_______ is the last step of translation.
Fill in the blank(s) with the appropriate word(s).