What is incorrect about pertussis? the source of infection is direct contact with inhaled droplets. a virulence factor of b. pertussis is toxins that destroy cilia cells is produced. the number of cases is steadily decreasing since 1976. the paroxysmal stage is characterized by persistent coughing. it can cause severe, life-threatening complications in babies?
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Biology, 21.06.2019 22:50
Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry
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Biology, 22.06.2019 03:40
20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.
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Biology, 22.06.2019 10:30
10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii
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Biology, 22.06.2019 15:30
Kate is studying the transformation from unicellular to multicellular organisms. which metaphor is the most appropriate to apply to the map of the timeline.
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What is incorrect about pertussis? the source of infection is direct contact with inhaled droplets....
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