The presence of Escherichia coli in water is used as an indication of fecal contamination. The Vibrio species are characterized as being curved, gram negative bacteria with polar flagella. Chlamydia, Rickettsia and Mycoplasma are all obligate intracellular parasites. Neisseria, Staphylococcus, and Streptococcus are all gram-positive cocci. Tetanus, botulism, and diphtheria are diseases caused by gram positive, soil-dwelling, spore- forming rods. Most togaviruses are transmitted to humans via insect bites. The reason why dogs do not get measles is because their cells lack the correct receptor sites for that virus. Glycoprotein spikes are found on the capsids of viruses. A naked virus lacks a capsid. The polioviruses and hepatitis A virus are transmitted by contaminated food or water. Staphylococcus grows best in a high salt environment. Streptococcus is killed by growing on blood agar.
Answer all of the following true or false questions:
True / False: Choose the answer that best fits each statement.
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The presence of Escherichia coli in water is used as an indication of fecal contamination.
-
The Vibrio species are characterized as being curved, gram negative bacteria with polar flagella.
-
Chlamydia, Rickettsia and Mycoplasma are all obligate intracellular
parasites . -
Neisseria, Staphylococcus, and Streptococcus are all gram-positive cocci.
-
Tetanus, botulism, and diphtheria are diseases caused by gram positive, soil-dwelling, spore-
forming rods.
-
Most togaviruses are transmitted to humans via insect bites.
-
The reason why dogs do not get measles is because their cells lack the correct receptor sites for
that virus.
-
Glycoprotein spikes are found on the capsids of viruses.
-
A naked virus lacks a capsid.
-
The polioviruses and hepatitis A virus are transmitted by contaminated food or water.
-
Staphylococcus grows best in a high salt environment.
-
Streptococcus is killed by growing on blood agar.
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