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
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A turgid plant cell is one that:
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
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
Flatworms are most closely related to the ________
A) cnidarians B) annelids C) echinoderms D) arthropods
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?