BMS1026 microbiology (tutorial questions)

?
gram positive bacteria cell wall has:
a thick layer of peptidoglycan
1 of 38
if a virus goes through the lytic cycle, this means that?
the host cell is eventually killed
2 of 38
euglena is a protozoan that has characteristics of algae. what is this type of evolution called
chimera process
3 of 38
xerophiles are organisms that can survive under which conditions?
in dry environments
4 of 38
an endemic disease is one that:
is constantly present
5 of 38
influenza can adapt to the human host by:
reassortment of genome segments by an already adapted influenza A
6 of 38
lichens are symbiotic associations between:
fungi and photosynthetic cells
7 of 38
the cell reproduction in bacteria may occur by:
binary fission
8 of 38
what length are most bacteria
1 micrometer
9 of 38
bacteriocidal agents
kill bacteria
10 of 38
how does saccharomyces cerevisiae multiply?
budding
11 of 38
when growing bacterium in a flask, what happens to the viable count during the log phase?
the viable count increases exponentially
12 of 38
what does not occur during asexual reproduction processes within microorganisms?
meiosis
13 of 38
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
15 of 38
aerotolerant organisms:
are unaffected by oxygen concentration
16 of 38
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
32 of 38
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
36 of 38
the common cold can be causes by:
rhino virus
37 of 38
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

Preview of the front of card 3

Card 4

Front

xerophiles are organisms that can survive under which conditions?

Back

Preview of the front of card 4

Card 5

Front

an endemic disease is one that:

Back

Preview of the front of card 5
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