Whooping cough is transmitted via respiratory droplets. The___stage lasts 1-2 weeks, while the second stage________is when a person has severe coughing.

A. primary, secondary
B. catarrhal, paroxysmal
C. incubation, convalescent
D. Low T-cell, High macrophage


Answer: B. catarrhal, paroxysmal

Biology & Microbiology

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A. lacks a cell wall B. has an extra cell wall layer C. lacks a cytosol D. has excess water in its cytosol E. may be described as flaccid

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What two processes results in genetically-different products?

A. mitosis and meiosis B. mitosis and asexual reproduction C. meiosis and asexual reproduction D. meiosis and sexual reproduction E. mitosis and sexual reproduction

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Flatworms are most closely related to the ________

A) cnidarians B) annelids C) echinoderms D) arthropods

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What species was once considered so benign that microbiologists used it to trace movements of air currents in hospitals and over cities?

What will be an ideal response?

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