WGU C453 CLINICAL MICROBIOLOGY
OA(OBJECTIVE ASSESSMENT) LATEST 2022/2023
(VERIFIED QUESTIONS AND ANSWERS)
what connects bacterial cells during the exchange of genetic material?
a. flagellum
b. nucleoid region
c. cell wall
d. pilus (correct answers)d. pilus
Which of the following is a function of peptidoglycan?
a. Promotes phagocytosis
b. Protects cells from bursting
c. Allows bacteria to adhere to surfaces and each other
d. Regulates movement of substances into and out of the bacterial cell (correct answers)b. Protects cells
from bursting
What term is used to describe bacterial cells that are spherical in shape?
a. Bacillus
b. Coccus
c. Spirillum
d. Vibrio (correct answers)b. Coccus
,Which of the following structures is associated with Gram-positive bacteria?
a. Teichoic acid
b. Periplasmic space
c. Peptidoglycan
d. Lipopolysaccharide (correct answers)a. Teichoic acid
Which of the following microorganisms lack mitochondria?
a. Fungi
b. Bacteria
c. Parasites
d. Protists (correct answers)b. Bacteria
Which of the following statements about endospores is false?
a. They are resistant to heat and drying.
b. Clostridium are capable of producing endospores.
c. They are used for reproduction.
d. Endospore formation begins with the building of the endospore septum. (correct answers)c. They are
used for reproduction.
Which bacteria have cell walls that are approximately 10-20% peptidoglycan?
d. Walldeficient (correct answers)d. Wall-deficient
Which of the following types of bacteria have cell walls that contain sterols?
a. Gram-positive
b. Gram-negative
c. Acid-fast
d. Wall-deficient (correct answers)d. Wall-deficient
Which of the following types of bacteria are slow growing, due to the high lipid content of their cell
walls?
a. Gram-positive
b. Gram-negative
c. Acid-fast
d. Wall-deficient (correct answers)c. Acid-fast
, Which of the following is an endotoxin, which can cause fever and inflammation, and is associated with
Gram-negative bacteria?
a. Teichoic acid
b. Periplasmic space
c. Peptidoglycan
d. Lipopolysaccharide (correct answers)d. Lipopolysaccharide
Which of the following types of bacteria have both a cell membrane and an outer membrane?
a. Gram-positive
b. Gram-negative
c. Acid-fast
d. Wall-deficient (correct answers)b. Gram-negative
Which of the following structures is associated with Gram-negative bacteria and is an active area of cell
metabolism?
a. Teichoic acid
b. Periplasmic space
c. Peptidoglycan
d. Lipopolysaccharide (correct answers)b. Periplasmic space
Which of the following is a function of a capsule?
a. Promotes phagocytosis
b. Protects cells from bursting
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