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Online Biotechnology Test - Biotechnology Test 2

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.
Conjugative plasmids
exhibit antibiotic resistance
do not exhibit antibiotic resistance
carry transfer genes called the tra genes
do not carry transfer genes
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Learn more problems on : Cloning Vectors
2.
Plasmid incompatibility is
inability of a plasmid to grow in the host
inability of two different plasmids to coexist in the same host cell in the absence of selection pressure.
both (a) and (b)
none of the above
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Learn more problems on : Cloning Vectors
3.
Which of the following is not true about phagemid?
Contain functional origin of replication of the plasmid and λ phage
May be propagated as a plasmid or as phage in appropriate strain
Contain λ att site
Can only be propagated as phage
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Learn more problems on : Cloning Vectors
4.
The fluid matrix of a cell is called the
nucleus
cytosol
cytoskeleton
endoplasmic reticulum
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Learn more problems on : Plant Structure
5.
Which cell type is likely to have the most mitochondria?
Fast-twitch muscle
Slow-twitch muscle
Liver cells
Adipose cells
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Learn more problems on : Plant Structure
6.
Which of the following statements about mitochondrial proteins is true?
All mitochondrial proteins are coded for and synthesized in the mitochondria
Some mitochondrial proteins are coded for and synthesized in the mitochondria and others
All mitochondrial proteins are imported from the cytoplasm
Mitochondrial proteins arise from other mitochondrial proteins
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Learn more problems on : Plant Structure
7.
What type of long chain alcohol is esterified to plant chlorophyll molecules?
Dolichol
Farnesol
Phytol
None of these
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Learn more problems on : Nitrogen Fixation and Photosynthesis
8.
Insect resistance in the transgenic plant has been achieved by
transferring genes for Bt toxins
transferring genes for protease inhibitors
transferring genes for other insecticidal secondary metabolities
all of the above
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Learn more problems on : Transgenic Plant
9.
Which of the following has been widely used to provide resistance against plant viruses?
Virus resistance genes from bacteria
Expression of virus coat protein genes in transgenic plants
Expression of anti-virus genes in vectors that transmit viruses
Expression of ribonuclease (RNase) genes in host plants
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Learn more problems on : Transgenic Plant
10.
Which of the following can be used for the removal of color from the effluents of pulp mill?
Coriolus versicolor entrapped in calcium alginate beads
Phanerochaete chrysosporium
Both (a) and (b)
Nitrosomonas europaen
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Learn more problems on : Environmental Protection
11.
Which of the following is correct about micro biosensors?
Implantation in human body and are suitable for in-vivo measurements
Can be integrated on one chip and are useful for measuring various substrates in a small amount of sample solution simultaneously
It is possible to develop disposable transducers for biosensors through mass production
All of these
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Learn more problems on : Biosensors and Biochips
12.
In an organism, the chromosome number is maintained constant because of
independent assortment
crossing over
DNA duplication
synapsis
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Learn more problems on : Animal Biotechnology Chromosomes
13.
The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
penetrance
expressivity
inheritance percent
environmental influence
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Learn more problems on : Animal Biotechnology Chromosomes
14.
Cells which no longer divide (such as certain specialized cells found in the human brain) remain in which phase of the cell cycle?
Prophase
S phase
G0 Phase
Gl Phase
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Learn more problems on : Cell Cycle
15.
The centromeres move toward the poles in __________ .
anaphase
interphase
metaphase
prophase
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Learn more problems on : Cell Cycle
16.
Wort is boiled with the hops
to help in protein coagulation
to provide bitter taste and flavour to the beer
to help in the coagulation of tannins
All of the above
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Learn more problems on : Beer and Wine
17.
The crystal-like material sometimes found in wine bottles is
residual diatomaceous earth
tannin
prevented by cold stabilizing
caused by excessive malic acid
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Learn more problems on : Beer and Wine
18.
Vinegar is typically produced in fed batch reactors because
a fed batch reactor can be used to maintain low acetic acid concentrations
a fed batch reactor can be used to maintain low ethanol concentrations
acetic acid bacteria tend to ferment at high ethanol concentrations
all of the above
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Learn more problems on : Vinegar and Citric Acid
19.
Which of the following changes occur during first phase of growth of Penicillium chrysogenum?
Growth of mycelia occurs
Ammonia is liberated in the medium
Lactic acid present in the corn steep liquor is utilized at the maximum rate
All of the above
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Learn more problems on : Antibiotics
20.
Fermentation medium for oxytetracyclin (terramycin) consist of
CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3
CSL, (NH4)2 SO4, sodium chloride and CaCO3
CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3
CSL,(NH4)2 SO4, ammonium chloride and CaCO3
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Learn more problems on : Antibiotics
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