Microbiology
Select the alternative that correctly answers the following questions.
1.
A fungus would belong to the phylum
(a)
(b)
(c)
(d)
2.
How do viruses reproduce?
(a)
(b)
(c)
(d)
3.
by binary fission
by sexually reproducing
by replication in living cells
by budding
Which type of microrganisms is unable to be killed by antibiotics?
(a)
(b)
(c)
(d)
4.
Phaeophyta
Bryophyta
Mycophyta
Cyanophyta
bacteria
viruses
fungi
protists
The diagram above is an example of which type of organism?
(a)
(b)
(c)
(d)
fungal spore
bacterium
virus
paramecium
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5.
What method of reproduction do bacteria use?
(a)
(b)
(c)
(d)
6.
Which of the following diseases is caused by a fungi?
(a)
(b)
(c)
(d)
7.
malaria
cholera
ringworm
measles
Bacteria form spores in unfavourable conditions. These spores can then reproduce when the
conditions change. Which of the following lists a way in which bacterial spores can be
killed?
(a)
(b)
(c)
(d)
8.
budding
spore formation
binary fission
meiosis
using antiseptic
boiling for more than 10 minutes
drying them out
cutting them open
A dish of sterile nutrient agar was exposed to air for a short time and was then covered and
incubated for 14 days. At the end of this time it was noted that there were two types of
growth present. There were large patches of a white furry colony and some small yellowish,
orange colonies.
What type of organism would the furry white growths represent?
(a)
(b)
(c)
(d)
9.
bacterial colony
mould colony
protozoan colony
fungal colony
Which of the following organisms is only visible using an electron microscope?
(a)
(b)
(c)
(d)
bacteria
yeast cells
viruses
fungi
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10.
Fungi are unable to make their own food and are called saprophytes. Which chemical do
they lack?
(a)
(b)
(c)
(d)
11.
The diagram above is an example of
(a)
(b)
(c)
(d)
12.
virus
rickettsia
streptococcus
spirochaetes
Some examples of fungi are
(a)
(b)
(c)
(d)
13.
lipase
chloroplast
lysosome
chlorophyll
bacilli and yeast
cocci and tinea
mould and yeast
mould and protista
Viruses cause many diseases in humans, most of which are unable to be treated effectively.
Which of the following diseases is caused by a viral organism?
(a)
(b)
(c)
(d)
dysentery
chicken pox
tuberculosis
athletes foot
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The following information is relevant to questions 14 to 16.
A biologist was investigating whether certain liquids contain agents which cause decay. The
following table sets out details of the experiment in which 5 test tubes of clear nutrient broth
was prepared inoculated and then sealed. The tubes were checked at 24 hours and 48 hours.
Tube
Nutrient medium
Inoculum
Appearance after
24 hours
48 hours
1
100ml sterile
broth
100mL sterile
broth
100mL sterile
broth
100mL sterile
broth
100mL unheated
broth
1mL sour wine
Cloudy
cloudy
1mL tap water
Clear
cloudy
1mL boiled sour
wine
1mL distilled
water
No inoculum
used
Clear
clear
Clear
clear
Cloudy
cloudy
2
3
4
5
14.
The cloudy appearance which developed in some of the tubes most probably resulted from
(a)
(b)
(c)
(d)
15.
The tube which is of least value in the experimental design is tube
(a)
(b)
(c)
(d)
16.
1
2
4
5
Which of the following interpretations of the data is best supported by the evidence?
(a)
(b)
(c)
(d)
17.
effects of the growth of microorganisms
the development of a chemical reaction between the nutrient broth and the inoculum
the temperature changes to which the broth was subjected
a putrid odour
tap water contains vast numbers of bacteria
boiling destroys bacteria
bacteria are unable to reproduce in sterile broth
bacteria present in distilled water are unable to reproduce in broth
Which of the following is true for all viruses?
(a)
(b)
(c)
(d)
viruses are bigger than bacteria
viruses cause disease in humans
viruses can only reproduce in a living cell
viruses form resistant spores
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18.
Amoebae belong to the class
(a)
(b)
(c)
(d)
19.
The fingerlike processes that flow out from an amoeba as it moves are called
(a)
(b)
(c)
(d)
20.
flagellate
amoeba
paramecium
slime mould
Archaebacteria and Eubacteria belong to the kingdom
(a)
(b)
(c)
(d)
22.
contractile vacuoles
flagella
pseudopodia
cilia
The organism shown above is a/n
(a)
(b)
(c)
(d)
21.
Ciliata
Sarcodena
Sporoza
Flagellata
Animalia
Plantae
Protista
Monera
Another term for rod shaped bacteria is
(a)
(b)
(c)
(d)
spirilla
bacilli
cocci
ovoid
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23.
Many monera are motile and so can move about actively. They do this by means of a
(a)
(b)
(c)
(d)
24.
The virus represented by the diagram above is a virus known as a
(a)
(b)
(c)
(d)
25.
retrovirus
bacteriophage
polymerase
viroid
The bacteria used to produce yoghurt do so by consuming some of the milk to produce
(a)
(b)
(c)
(d)
26.
microtubule
flagellum
capsule
phagocyte
hydrochloric acid
lactic acid
carbon dioxide
methane
Recombinant DNA technology makes use of
(a)
(b)
(c)
(d)
endonucleases
plasmids
viroids
retroviruses
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27.
The lifecycle drawn above is representative of
(a)
(b)
(c)
(d)
28.
a fungus
a true slime mould
a cellular slime mould
euglena
Some Biologists classify the bacteria ,rickettsias and the blue-green algae together in the
kingdom Procaryota. One feature they all have in common is that they
(a)
(b)
(c)
(d)
reproduce by spores
possess chlorophyll
are parasitic
have no distinct nucleus
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29.
In the diagram above the structure labelled X is a
(a)
(b)
(c)
(d)
30.
A germ killing substance produced by a bacterium or mould is a/n
(a)
(b)
(c)
(d)
31.
toxin
antibiotic
antibody
toxoid
Bacteriophages are
(a)
(b)
(c)
(d)
32.
hyphae
sporangium
rhizoid
stolon
viruses which attack bacteria
bacteria which attack other bacteria
bacteria which attack viruses
viruses which attack viruses
All bacteria have in common the fact that they
(a)
(b)
(c)
(d)
are parasites
reproduce only in moist surroundings
are the same shape
are able to form spores
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33.
One important property of cyanobacteria is that they
(a)
(b)
(c)
(d)
possess chlorophyll c
are obligate anaerobes
ferment
fix atmospheric nitrogen
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