WGU C-453 MICROBIOLOGY EXAM OBJECTIVE

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WGU C-453 MICROBIOLOGY EXAM OBJECTIVE

ASSESSMENT COMPLETE 200 QUESTIONS AND

CORRECT DETAILED ANSWERS LATEST UPDATE

THIS YEAR - JUST RELEASED

Which of the following microorganisms lack mitochondria?

• Fungi
• Bacteria
• Parasites
• Protists
• Bacteria

Which of the following statements about endospores is false?

• They are resistant to heat and drying.
• Clostridium are capable of producing endospores.
• They are used for reproduction.
• Endospore formation begins with the building of the endospore septum.
• They are used for reproduction.

Which bacteria have cell walls that are approximately 10-20% peptidoglycan?

• Gram-positive
• Gram-negative 1 / 4

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• Acid-fast
• Wall-deficient
• Gram-negative

Which bacteria are difficult to Gram stain?

• Grampositive
• Gramnegative
• Acidfast
• Walldeficient
• Wall-deficient

Which of the following types of bacteria have cell walls that contain sterols?

• Gram-positive
• Gram-negative
• Acid-fast
• Wall-deficient
• Wall-deficient

Which of the following types of bacteria are slow growing, due to the high lipid content of their cell walls?

• Gram-positive
• Gram-negative
• Acid-fast
• Wall-deficient
• Acid-fast 2 / 4

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3 Which of the following is an endotoxin, which can cause fever and inflammation, and is associated with Gram-negative bacteria?

• Teichoic acid
• Periplasmic space
• Peptidoglycan
• Lipopolysaccharide
• Lipopolysaccharide

Which of the following types of bacteria have both a cell membrane and an outer membrane?

• Gram-positive
• Gram-negative
• Acid-fast
• Wall-deficient
• Gram-negative

what connects bacterial cells during the exchange of genetic material?

• flagellum
• nucleoid region
• cell wall
• pilus
• pilus

Which of the following is a function of peptidoglycan?

• Promotes phagocytosis
• Protects cells from bursting 3 / 4

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• Allows bacteria to adhere to surfaces and each other
• Regulates movement of substances into and out of the bacterial cell
• Protects cells from bursting

What term is used to describe bacterial cells that are spherical in shape?

• Bacillus
• Coccus
• Spirillum
• Vibrio
• Coccus

Which of the following structures is associated with Gram-positive bacteria?

• Teichoic acid
• Periplasmic space
• Peptidoglycan
• Lipopolysaccharide
• Teichoic acid

Which of the following structures is associated with Gram-negative bacteria and is an active area of cell metabolism?

• Teichoic acid
• Periplasmic space
• Peptidoglycan
• Lipopolysaccharide
• Periplasmic space
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