Biotechnology Test Preparation Set.5 also have 100 MCQs that helpful in preparing Biotechnology Job Tests also include previously asked MCQs.
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401 - The major problem associated with the isolation of free cells and cell aggregates from organs is that of
releasing the cells from their supporting matrix
402 - The major source of sugar in the world is
sugarcane
403 - The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that
mitochondria are surrounded by a semi permeable membrane
404 - The movement of most minerals, including potassium into root cells is by
active transport
405 - The nucleous of mature unfertilized ovum may be removed by
both (a) and (b)
406 - The number of follicles at any particular stage is governed by
all of the above
407 - The organism used for the preparation of sake is
Aspergillus oryzae
408 - The organism used for the preparation of sonti is
Rhizopus sonti
409 - The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
penetrance
410 - The phase of mitosis which is associated with the formation of the nuclear envelope, is
telophase
411 - The phenomenon of the reversion of mature cells to the meristematic state leading to the formation of callus is known as
dedifferentiation
412 - The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as
gene gun
413 - The preserved embryoids are termed as
synthetic seeds
414 - The primary B cell receptor is
IgD
415 - The process of making malt as soluble as possible by using enzymes adjuncts etc is known as
mashing
416 - The production of high quality and uniform embryos has been limited to only
both (a) and (b)
417 - The promoter used for cloning HBV surface antigen is
alcohol dehydrogenase 1
418 - The proteins that forms the walls of the microtubules are
tubulin
419 - The rate of degradation and microbes resistance to toxic pollutants remain better when the
mixed cell population is used
420 - The recombinant hGH lacks
terminal methionine
421 - The right segment of octopine T-DNA (TR) is necessary for
enzymes for agropine biosynthesis
422 - The roots of a plant are converted into drug-producing structures in a process called
rhizosecretion
423 - The shortest of mitotic phases is the
anaphase
424 - The size of the genome of SV 40 is
5.2 kb
425 - The size of the virulent plasmid of Agrobacterium tumefaciens is
140-235 kb
426 - The Southern blotting technique depends on
similarities between the sequences of probe DNA and experimental DNA
427 - The spindle forms in the
M phase
428 - The study of interaction between living organism and environment is called
ecology
429 - The success of embryo transplantation depends upon the ability to obtain an increased number of embryos from animals of superior genetic merit, which can be achieved by the use of
exogenous gonadatrophic hormones
430 - The technique of organ culture may be divided on the basis of employing
both (a) and (b)
431 - The technique, mainly used for the diagnosing birth defects in the fetus by means of needle, is called
amniocentesis
432 - The term homologous chromosomes
means a pair of chromosomes of the same kind, such as sex chromosomes
433 - The term Racking refers to
removing clear liquid from sediment
434 - The term, not related to mitosis is
gametes
435 - The transfer of intermediate vectors into Agrobacterium are brought about by
triparental mating
436 - The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the
T-DNA
437 - The two chains are joined together to constitute native insulin using
sodium dissulphonate and sodium sulphite
438 - The two chains of insulin can be separated by detaching it from ?-galactosidase using
cyanogen bromide
439 - The universe tends towards maximum disorder"" is stated by
second law of thermodynamics
440 - The volume of O2 liberated in photosynthesis has which of the following ratio to CO2?
0.042361111111
441 - The yeast generated during the fermentation of beer is generally separated by
centrifugation
442 - The yield of the antibiotic depends upon
all of these
443 - The Zygomonas has a merit over yeast because
all of the above
444 - To maintain aseptic conditions during fermentation which of the following is needed?
All of these
445 - To maintain the pH of the culture
both (a) and (b)
446 - To prevent the accumulation of lactate
low glucose concentration is required
447 - To qualify as a micro array the analytical device must be
all of these
448 - Tomatoes exhibiting delayed ripening express antisense RNA against
ACC deaminase
449 - Tonoplast is a membrane around
vacuole
450 - Toxicity due to accumulation of ammonia can be overcome
all of the above
451 - Transfection refers to which of the following?
Introduction of foreign gene in to a cell
452 - Transgenic goats have been used to produce which of the following protein that is used for dissolving blood clots?
A variant of human tissue-type plasminogen activator
453 - Transgenic goats produce a variant of human tissue type plasminogen activator protein in
milk
454 - Transgenic plants
both (a) and (b)
455 - Transgenic plants with increased tolerance to aluminum have been produced by making plants that
secrete citrate into the soil
456 - Transmission of a gene from male parent to female child to male grand child is known as
criss-cross inheritance
457 - Transplastomics
targets genes in the chloroplast
458 - Triticale is derived by crossing
rye (secale) and wheat
459 - Triticale, the first man made cereal is an example of
artificial allopolyploidy
460 - Two genes from a bacterium (Alcaligenes eutrophus) and a cotton gene produce
a plastic
461 - Using bovine papilloma virus (BPV) derived vectors, permanent cell lines can be obtained carrying a recombinant DNA
either episomally or integrated at high copy number
462 - Vectors are
molecules that are able to covalently bond to and carry foreign DNA into cells
463 - Vegetable oil, (corn oil or soybean oil) added in the fermentation medium for penicillin, act as
antifoam agent
464 - Very high sugar concentration (40-100 g/l) have been used
Both (a) and (b)
465 - Vinegar is typically produced in fed batch reactors because
a fed batch reactor can be used to maintain low ethanol concentrations
466 - Vinegar production consists of
anaerobic fermentation followed by aerobic fermentation
467 - Vir genes required for the T-DNA transfer and processing are located
outside the T-DNA region
468 - Virulence trait of Agrobacterium tumefaciens is borne on
tumour inducing plasmid DNA
469 - Virulent strains of Agrobacterium contain large Ti-plasmids, which are responsible for the DNA transfer and subsequent disease symptoms. It has been shown that Ti-plasmids contain
two sets of sequence necessary for gene transfer
470 - Volatile acidity is
produced by acetobacter
471 - Water content of active protoplasm is
0.9
472 - Water moves into roots of plants by
osmosis
473 - What are different substrates used for ethanol production?
All of the above
474 - What are the fermentation conditions for the ethanol production?
pH 5; temperature 35°C
475 - What are the macronutrients used in plant cell culture medium?
N, P, K, S, Ca
476 - What are the main constituents of culture for animal cell growth?
Glucose and Glutamine
477 - What are the names of the two genders of haploid yeast cells?
A and Alpha
478 - What are the various disadvantages of cross protection?
All of the above
479 - What is meant by 'Organ culture' ?
Maintenance alive of a whole organ, after removal from the organism by partial immersion in a nutrient fluid
480 - What is 'nurse' or conditioned medium?
It is the liquid medium removed from the suspension of fast growing cells
481 - What is the approximate size (in kb) of the melon mitochondrial genome?
2400 kilobase
482 - What is the concentration of CO2 required for culturing animal cells?
1-10%
483 - What is the defective enzyme in the glycogen storage Von Gierke's disease?
Glucose-6-phosphatase
484 - What is the desirable sugar content of the grapes required for the wine production?
14-20%
485 - What is the effect of excess accumulation of metabolite products (lactate and ammonium) on cells?
Lactate helps in the growth while ammonium inhibits the growth
486 - What is the metal ligand in chlorophylls?
Magnesium (Mg)
487 - What is the normal role of restriction endonucleases in bacterial cells?
To degrade invading phage DNA
488 - What is the pH of the medium when molasses is used as substrate for the production of citric acid?
5
489 - What is the pH of the medium when sucrose is used as substrate for the production of citric acid?
3
490 - What is the size (in kb) of the tobacco chloroplast genome?
155 kilobase
491 - What is the source of free energy (?G) for moving protons out of mitochondria against their concentration and electrical gradients?
The redox reactions of electron transport
492 - What is/are the benefit(s) of micropropagation or clonal propagation?
All of the above
493 - What single feature is probably most responsible for the success of angiosperms?
Flowers
494 - What structure forms as a network of protein cables during cell division?
Spindle
495 - What temperature is maintained during anaerobic fermentation of red wine?
24-27 °C
496 - What temperature is maintained during anaerobic fermentation of white wine?
10-21 °C
497 - What type of long chain alcohol is esterified to plant chlorophyll molecules?
Phytol
498 - Wheat variety Rendezvous, with resistance to eye spot (Pseudo-cercosporella herpotrichoides) derived from Aegilops ventricosa, has a chloroplast genome derived from
Aegilops
499 - When a fertilized egg cell develops into an embryo, the entropy of the living system
decreases
500 - When a gardener takes a cutting from a plant, indicating that he has made a
clone
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