Verified step by step guidance
06:15
06:04
03:27Indicate the true statements and then correct the false statements so that they are true.
a. The Gram stain is a simple stain.
b. Simple stains reveal information about size, shape, and arrangement.
c. Bright field microscopy requires a stained sample.
d. Dark field microscopy requires a stained sample.
e. The acid-fast stain detects peptidoglycan in the cell walls of certain bacteria.
f. Gram-positive bacteria have a thin peptidoglycan layer in the cell wall.
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.
Match the following people to their scientific/medical contribution:
Note: Choices may be used more than once or not at all.
Select 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.
Fill in the blanks: Bacteria are ___________________ cells in the domain ___________________. In contrast, the domain ___________________ includes unicellular and multicellular organisms that are made of ___________________ cells, or cells that have a nucleus and membrane-bound organelles.
