Online Microbiology Test - Microbiology Test 8

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.
  • DO NOT refresh the page.
  • 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.
For each pair of electrons passing from NADH located inside the mitochondria to oxygen, how many ATP molecules can be generated?
1
2
3
4
Your Answer: Option
(Not Answered)
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2.
Who was the inventor of the Petri dish?
R.J. Petri, an assistant of R. Koch
A famous French cook
Italian glass blower from Petri, Italy
None of the above
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(Not Answered)
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3.
Catalase production is negative in which of the following?
Streptococcus
Salmonella
Proteus
Staphylococcus
Your Answer: Option
(Not Answered)
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4.
Stringent anaerobes can be grown in a media by taking special measure as
boiling the media for several minutes
addition of cysteine
passing through oxygen-free nitrogen
any of these
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(Not Answered)
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5.
Which of the following does not produce oxygen as a product of photosynthesis?
Oak trees
Purple sulfur bacteria
Cyanobacteria
Phytoplankton
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6.
What is the range of minimum set of genes required for life?
50-100 genes
250-350 genes
1000-1500 genes
1500-2000 genes
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7.
Which is not an essential part of a two-component phosphorelay system?
Response regulator
Sensor kinase
Autoinducer
None of these
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(Not Answered)
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8.
F factor plasmids play a major role in
conjugation
replication
transduction
trasnscription
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(Not Answered)
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9.
In which of the following cell mediated immunity (CMI) participates?
Delayed hypersensitivity reaction
Graft versus host reaction
Allograft rejection
All of the above
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(Not Answered)
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10.
Gram-positive bacteria, responsible for food poisoning, is/are
Mycoplasmas
Pseudomonas
Clostridia
all of these
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(Not Answered)
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11.
The bacteria which can ferment mannitol anaerobically is
Staphylococcus aureus
S epidermidis
S saprophyticus
None of these
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(Not Answered)
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12.
Koch's postulates were satisfied for the first time with
Clostridium tetani
Corynebacterium diphtheriae
Bacillus anthracis
Salmonella typhi
Your Answer: Option
(Not Answered)
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13.
Why are slime molds considered to resemble plants?
They can photosynthesize
They have cell walls composed largely of cellulose
They form a threadlike structure
They form structures that resemble leaves
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(Not Answered)
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14.
Area of lysis on a bacterial lawn culture produced by a phage is known as
pock
plaque
pox
all of these
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(Not Answered)
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15.
Which type of interferon is produced by T lymphocytes?
α
β
γ
γ and β
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16.
Which of the following is bactericidal?
Membrane filtration
Ionizing radiation
Freeze-drying
Deep freezing
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17.
The time temperature combination for HTST paterurization of 71.1°C for 15 sec is selected on the basis of
Coxiella Burnetii
E. coli
B. subtilis
C. botulinum
Your Answer: Option
(Not Answered)
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18.
Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria?
Cloudiness and ropiness
Flat sour spoilage
Superficial fungal spoilage
Pin-spot molding
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(Not Answered)
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19.
The immediate precursor for glumatic acid production by Corynebacterium glutamicum is
lysine
oxoacetate
citrate
2-oxo-glutarate
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(Not Answered)
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20.
Which of the following is a cephalosporin?
Cephalosporin N
Synnematin
Cephalosporin C
All of these
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(Not Answered)
Correct Answer: Option

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