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MICROBIOLOGY EXAM 1, CH 1,3,4 QUESTIONS & ANSWERS VERIFIED 100% CORRECT!!
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MICROBIOLOGY EXAM 1, CH 1,3,4 QUESTIONS & ANSWERS VERIFIED 100% CORRECT!!
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MICROBIOLOGY EXAM1, CH 1,3,4
QUESTIONS &
ANSWERS VERIFIED
100% CORRECT!!
MICROBIOLOGY
Evatee 10/13/24 MICROBIOLOGY
,MICROBIOLOGY EXAM 1, CH 1,3,4 QUESTIONS
& ANSWERS VERIFIED 100% CORRECT!!
You are told that the cells on a microscope slide are plant, animal, or bacterial.
You look at them through a microscope and see cell walls and membrane-
bound organelles. You conclude correctly that the cells
could be either plant or bacterial cells.
are animal cells.
are bacterial cells.
are plant cells. Answer - are plant cells
The following are all examples of differential stains except:
gram stain
endospore stain
acid-fast stain
simple stain Answer - simple stain
Bacteria that are unable to survive in the presence of oxygen are called
obligate aerobes.
aerotolerant anaerobes.
facultative anaerobes.
obligate anaerobes. Answer - Obligate anaerobes
,Koch's work involving anthrax was significant because it was the first time
bacterium had been proven to cause a disease
anthrax had been discovered in humans
bacteria had been seen in a microscope
bacteria had been grown in a laboratory Answer - bacterium had been proven
to cause a disease
________ are complex communities of various types of microbes that adhere
to surfaces.
Colonies
Isolates
Biosensors
Biofilms Answer - biofilms
Lister contributed to modern day infection control by
his discovery of penicillin.
using carbolic acid for disinfection and sterilization.
promoting hand washing between patients.
using nets to prevent mosquito bites. Answer - Using carbolic acid for
disinfection and sterilization
The lipopolysaccharide (LPS) layer of the outer membrane is found only in the
cell wall of
, Eukarya.
gram-positive Bacteria
gram-negative Bacteria
Archaea. Answer - Gram-negative bacteria
The two genera, Bacillus and Clostridium, are similar in that both are
strict anaerobes.
catalase positive.
spore formers.
strict pathogens. Answer - Spore formers
Which of the following statements about a gram-positive cell wall is false?
It maintains the shape of the cell.
It contains teichoic acids.
It protects the cell in a hypertonic environment.
It has a thick layer of peptidoglycan Answer - It protects the cell in a hypertonic
environment
Oxygen and carbon dioxide move into and out of the cell by
diffusion through the lipid bilayer
facilitated diffusion
osmosis
active transport Answer - diffusion through the lipid bilayer
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