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Microbiology Exam 1 (multiple choice Questions) Question With 100% Correct Answers 2023
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Microbiology Exam 1 (multiple choice Questions) Question With 100% Correct Answers 2023
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Microbiology Exam 1 (multiple choiceQuestions) Question With 100% Correct
Answers 2023
Living things ordinarily too small to be seen with the unaided eye are termed
a. bacteria
b. viruses
c. microorganisms
d. none of these are correct - Correct Answer-c. microorganisms
The Dutch textile merchant who made and used quality magnifying lenses to see and
record microorganisms was
a. Francesco Redi
b. Antonie van Leeuwenhoek
c. louis pasteur
d. joseph lister
e. robert koch - Correct Answer-b. Antonie van Leeuwenhoek
Most biochemical macromolecules are polymers, which are chains of
a. hydrophobic molecules
b. electrolytic molecules
c. repeating monomers
d. repeating carbohydrates
e. hydrogen bonds - Correct Answer-c. repeating monomers
What part of a phospholipid forms hydrophobic tails
a. fatty acids
b. glycerol
c. phosphate
d. alcohol
e. all of the choices are correct - Correct Answer-a. fatty acids
ATP is best described as
a. an enzyme
b. a double helix
c. an electron carrier
d. the energy molecules of cells
e. all of the choices are correct - Correct Answer-d. the energy molecules of cells
The bacterial chromosome
a. is located in the cell membrane
b. contains all the cell's plasmids
c. is part of the nucleoid
, d. forms a single linear strand of DNA
e. all of the choices are correct - Correct Answer-c. is part of the nucleoid
Lipopolysaccharide is an important cell wall component of
a. gram-negative bacteria
b. gram-positive bacteria
c. acid-fast bacteria
d. mycoplasmas
e. protoplasts - Correct Answer-a. gram-negative bacteria
If bacteria living in salty seawater were displaced to a freshwater environment, the cell
structure that would prevent the cells from rupturing is the
a. endospore
b. cell wall
c. cell membrane
d. capsule
e. slime layer - Correct Answer-b. cell wall
Endospores are
a. metabolically inactive
b. resistant to heat and chemical destruction
c. resistant to destruction by radiation
d. all of the choices are correct - Correct Answer-d. all of the choices are correct
A bacterial cell exhibiting chemotaxis probably has
a. fimbriae
b. a capsule
c. thylakoids
d. flagella
e. metachromatic granules - Correct Answer-d. flagella
An organelle that is a stack of flattened, membranous sacs and functions to receive,
modify, and package proteins for cell secretion is the
a. mitochondria
b. lysosome
c. golgi apparatus
d. chloroplast
e. endoplasmic reticulum - Correct Answer-c. golgi apparatus
The size of a eukaryotic cell ribosome is
a. 30S
b. 40S
c. 50S
d. 70S
e. 80S - Correct Answer-e. 80S
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