What is the simplest method to measure population density in a given area?
A. Count the number of organisms.
B. Perform a line transect.
C. Look for random dispersion patterns.
D. Count the number of reproductive adults.
E. Calculate a survivorship curve.
A. Count the number of organisms.
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Which one of the following methods of antimicrobial susceptibility testing is the most accurate? (Note: information about susceptibility testing can be found on the CD-ROM that accompanies this book.)
A) agar dilution method B) disk-diffusion method C) macro broth dilution method D) micro broth dilution method
Most of the oxygen in the blood is transported by
a. plasma. b. serum. c. platelets. d. hemoglobin. e. leukocytes.
Activation of the sympathetic nervous system
a. speeds up heart beat and respiratory rate. b. increases the flow of watery saliva. c. stimulates peristaltic contractions of the intestinal system. d. slows heartbeat and lowers blood pressure. e. allows the body to relax rather than prepare for fight or flight.
Which of the following is necessary before any of the other events can occur?
A. independent assortment B. segregation C. haploid cells D. pairing of homologous chromosomes