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STRAIGHTERLINE
MICROBIOLOGY FINAL E XAM
QUESTIONS WITH 100% CORRECT
ANSWERS
Question :What is a Transforming Infection?
Correct answer:Virus that alters cell DNA, leading to
cancer
Question :What is a lysogenic infection?
Correct answer:Phage DNA is incorporated into host
genome and is passed on to subsequent generations
Question :What is a Lytic Bacteriophage Infection?
Correct answer:Host cell gets so packed with viruses that
is lyses (splits) open and releases mature virions
Question :What are the three principle purposes of
cultivating viruses?
Correct answer:1.) Isolate and ID viruses in clinical
specimens
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2.) Prepare viruses for vaccines 3.) Research viral strucutre, multiplication cycles, genetics, and effects on hosts
Question :What are three ways in which viruses are
cultivated?
Correct answer:1.) Using live animal inoculation
2.) Using bird embryos 3.) Using cell (tissue) culture techniques
Question :What are three noncellular infections agents
besides viruses?
Correct answer:Prions, viroids, and satellite viruses.
Question :List the essential nutrients of a bacterial cell:
Correct answer:CHONPS
C - arbon H - ydrogen N - itrogen
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P - hosphate S - Sulphur
Question :What are four terms that describe an organisms
source of Carbon and Energy?
Correct answer:Photoautotrophos, chemoautotrophs,
chemoheterotrophs, lithoautotrophs
Question :Define Saprobe:
Correct answer:A microbe that decomposes organic
remains from dead organisms
Question :Define Parasite
Correct answer:An organism that lives in or within a host
from which it obtains nutrients and enjoys protection.Produces some degree of harm to host
Question :Define Diffusion:
Correct answer:movement from high to low
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Question :Define Osmosis:
Correct answer:Diffusion of water through a selectively
permeable membrane
Question :hypotonic cell:
Correct answer:cells that are less concentrated than their
environment; water rushes in, may burst cell
Question :hypertonic cell:
Correct answer:cells that are more concentrated than their
environment; water rushes out of the cell causing it to shrivel
Question :isotonic cell:
Correct answer:extracellular environment has the same
concentration of solutes as the cell cytoplasm
Question :types of passive transport
Correct answer:Facilitated diffusion, molecule-specific,
simple diffusion