In a healthy human, resident microorganisms would be found in all of these areas except

A) nasal passages
B) lower urethra
C) tooth and gum surfaces
D) bloodstream
E) conjunctiva


Ans: D) bloodstream

Biology & Microbiology

You might also like to view...

In the light-independent reactions, when CO2 is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is

A.  citric acid. B.  glucose. C.  glyceraldehyde-3-phosphate. D.  3-phosphoglycerate. E.  pyruvate.

Biology & Microbiology

The Modern Synthesis of evolution is based on

A. observations of the formation of new species. B. Darwin's ideas and modern concepts of genetics. C. experimental studies of populations performed by Darwin. D. recent concepts of adaptation and reproduction. E. recent developments of DNA replication and PCR machines.

Biology & Microbiology

Gene flow is the

A) migration of individuals between populations. B) transfer of genes within a population. C) variation of alleles within a population. D) movement of alleles between populations.

Biology & Microbiology

Over 470,000 cases of cholera were reported in Haiti in the two years following the 2010 earthquake. Which of the following was the most likely mode of transmission?

A) mosquitoes B) aerosols C) contact D) contaminated water E) contaminated milk

Biology & Microbiology