Online Microbiology Test - Microbiology Test 5

Instruction:

  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
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  • All the best!

Marks : 2/20


Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.

1.
Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?
Homeostasis
Tissues
Reproduction
Molecules
Your Answer: Option
(Not Answered)
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2.
Which of the following is not found in the kingdom Monera?
Organelles
Organized cell structure
Ability to reproduce
Ability to use energy
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(Not Answered)
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3.
For most bacteria, the optimum pH for growth lies between
6.5-7.5
3.5-4.5
4.5-5.5
5.5-6.5
Your Answer: Option
(Not Answered)
Correct Answer: Option

4.
Treponema species from human oral cavity can be selected by using
pH of the medium
incubation temperature
cell size and motility
all of these
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(Not Answered)
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5.
During exponential growth, the growth rate is
number of generations per unit time
reciprocal of generation time
both (a) and (b)
none of these
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(Not Answered)
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6.
Quantitative measurement of bacterial growth can be carried out by measuring
cell count
cell mass
cell activity
all of these
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7.
Implicit factors
depend on developing microflora
can be synergistic
both (a) and (b)
none of the above
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8.
Main function of an enzyme is to
increase the activation energy
decrease the activation energy
maintain constant activation energy
none of these
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9.
Entner-Doudoroff pathway is found in
aerobic prokaryotes
anaerobic prokaryotes
both (a) and (b)
aerobic eukaryotes
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(Not Answered)
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10.
Which of the termination codon is called amber?
UAA
UAG
UGA
AUG
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(Not Answered)
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11.
Induction of tolerance mechanism(s) is/are
suppression
clonal deletion
clonal anergy
all of these
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12.
The bacteria which is predominant flora of the human gut is
Escherichia coli
Clostridium perfringens
Bacteroides
Actinomyces
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13.
Number of flagella produced by motile cells in
members of the phaeophyta is greater than members of the Oomycota
members of the Oomycota is greater than members of the Phaeophyta
members of the Phaeophyta is approximately equal to members of the Oomycota
none of the above
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14.
In the simplest capsid, there is a capsomere at each of the 12 vertices; this capsomere, which is surrounded by five other capsomeres, is termed a
penton
polyhedra
icosahedral
helical
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15.
What does the positive strand in double stranded RNA viruses stands for?
rRNA
tRNA
mRNA
None of these
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16.
A viral load test detects the
provirus of HIV in infected cells
total amount of virus in the infected host
number of viruses being released by each infected cell
amount of bacteriophage being produced by E. coli cells
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17.
If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?
1
5
10
50
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18.
Which of the following organism is utilized for the production of D-L-alanine?
Microbacterium ammoniaphilum
Brevibacterium flavum
Arthrobacter paraffineus
C. glutamicum
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(Not Answered)
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19.
Most important species of vinegar bacteria causing sliminess is
Acetobacter aceti
Saccharomyces carlsbergiensis
Lactobacillus lactis
None of the above
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(Not Answered)
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20.
Microbial rennet, which is used in cheese manufacture is produced by
Mucor spp
Aspergillus spp
Bacillus spp
Saccharomyces spp
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(Not Answered)
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