BMS1026 microbiology (tutorial questions)
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- Created by: tammyrocks4eva
- Created on: 14-01-14 20:41
gram positive bacteria cell wall has:
a thick layer of peptidoglycan
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if a virus goes through the lytic cycle, this means that?
the host cell is eventually killed
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euglena is a protozoan that has characteristics of algae. what is this type of evolution called
chimera process
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xerophiles are organisms that can survive under which conditions?
in dry environments
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an endemic disease is one that:
is constantly present
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influenza can adapt to the human host by:
reassortment of genome segments by an already adapted influenza A
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lichens are symbiotic associations between:
fungi and photosynthetic cells
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the cell reproduction in bacteria may occur by:
binary fission
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what length are most bacteria
1 micrometer
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bacteriocidal agents
kill bacteria
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how does saccharomyces cerevisiae multiply?
budding
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when growing bacterium in a flask, what happens to the viable count during the log phase?
the viable count increases exponentially
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what does not occur during asexual reproduction processes within microorganisms?
meiosis
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kock's postulates are designed to prove:
that there is a casual relationship between a specific organism and specific effect
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in which group do we find extreme thermophiles?
archaea
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aerotolerant organisms:
are unaffected by oxygen concentration
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cytoplasmic streaming is:
how fungi move nutrients and organelles through their hyphae
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penicillin and other beta lactam antibiotics:
inhibit peptidoglycan synthesis in the bacterial cell wall
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amino acides can be over produced in bacteria by using:
auxotrophs
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persuading a filamentous fungus to grow in the pelleted morphology form can be used for the production of?
citric acid
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feedback inhibition of amino acid biosynthesis can be overcome by biotin deficiency in the medium because:
the producing microorganism require biotin for a non-permeable cell membrane
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amyloglucosidase:
converts mono, di, tri - saccharides to glucose
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production of single cell protein was originally developed:
as a part of the oil refining process
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bacterial protein synthesis is inhibited by:
streptomycin
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the production principles for recombinant DNA-derived products are:
similar to those of secondary metabolites
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resistance to penicillin occurs when?
the pathogen synthesises an enzyme that breaks down the penicillin molecules
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secondary metabolism is induced when:
the culture growing rate decreases significantly
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microbial polysaccharides are used as:
viscosity extenders in aqueous solution
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in a microbial culture, the growth limiting substance is:
the first nutrient to become exhausted
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laundering enzymes, produced by microorganisms includes:
broad spectrum proteases
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indirect transmission of zoonotic infection may involve:
an intermediate vector eg mosquito tick, flea
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chlamydia is most strongly associated with which age group
16-24
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cytotoxic T cells can:
release perforin to create pores in the target cell membrane
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malaria is transmitted by:
the anopheles mosquito
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rickettsias are transmitted by:
arthropods
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who created the first rabies vaccine?
louis pasteur
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the common cold can be causes by:
rhino virus
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chancroid is:
a sexually transmitted infection
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Other cards in this set
Card 2
Front
if a virus goes through the lytic cycle, this means that?
Back
the host cell is eventually killed
Card 3
Front
euglena is a protozoan that has characteristics of algae. what is this type of evolution called
Back
Card 4
Front
xerophiles are organisms that can survive under which conditions?
Back
Card 5
Front
an endemic disease is one that:
Back
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