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04:17Select the most accurate statement.
a. The Gram stain is a simple stain.
b. Bacterial endospores appear green from the acid-fast stain.
c. The acid-fast stain is used to detect bacteria that have a capsule.
d. Bacterial flagella can only be seen with electron microscopes.
e. The mordant in the Gram stain is iodine.
Assume you are asked to view and draw all samples at a final magnification of 1000x. If the ocular lens is 10x, what objective lens should be in place as you draft your drawings?
Identify the following statements as observations or conclusions.
a. The solution turned red.
b. The bacterium is a rod shape.
c. The cell died due to lack of nutrients.
d. The bacterium is E. coli.
e. The cell is Gram-positive.
f. The bacterium is a pathogen.
g. There are small green structures present upon performing the endospore stain.
h. The solution remained clear after 10 hours of incubation.
i. Fermentation occurred.
j. Life comes from life.
Assume that you isolated a unicellular, non-nucleated cell from a deep-sea vent. Select the statement that is least likely regarding the cell you found.
a. The cell is a prokaryote.
b. The cell is a fungus or yeast.
c. The cell is an archaea.
d. The cell is not a pathogen.
e. The cell is in Domain Archaea.
Fill in the blanks: In taxonomy, the broadest groupings are called ___________________, which are further subdivided into six different ___________________. The most specific or narrowest grouping is ___________________, which is the ___________________ name in the binomial nomenclature system.
How is an opportunistic pathogen different from a pathogen?
