Online Biotechnology Test - Biotechnology Test 5

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Total number of questions: 20.
Time allotted: 30 minutes.
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Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as

photoreactivation

gel electrophoresis

autoradiography

blotting

[#]

Charon 34 and Charon 35 are the examples of

plasmid vector

cosmid vector

phage vector

phagemid vector

[#]

The first therapeutic product formed by means of recombinant DNA technology is

human growth hormone

insulin

hepatitis B vaccine

vaccine for foot and mouth disease

[#]

Triticale is derived by crossing

wheat and rice

wheat and tapioca

rye (secale) and wheat

rye and rice

[#]

Which of the following is not an electron carrier class in the electron transport chain?

Flavoproteins

Cytochromes

Iron - sulfur proteins

Cytochrome c oxidase

[#]

Nitrogen in the plant cell culture media is provided by either ammonia or nitrate salt. In the media

utilization of ammonium cause culture pH to drop while utilization of nitrate cause culture pH to rise

utilization of nitrate cause culture pH to drop while utilization of ammonium cause culture pH to rise

utilization of both ammonium and nitrate result in rise in pH

utilization of both ammonium and nitrate result in drop in pH

[#]

Two genes from a bacterium (Alcaligenes eutrophus) and a cotton gene produce

a plastic

a vaccine against the bacterium

a pharmaceutical product

herbicide resistance

[#]

Human serum albumin in case of transgenic plant is secreted in

transgenic leaf tissues

transgenic root tissues

is not secreted out of plant

transgenic stem tissues

[#]

Which of the following microorganisms leach metals out of rock ores and can accumulate silver?

Pseudomonas aeruginosa

Thiobacillus

Pseudomonas putida

Zoogloea ramigera

[#]

10.

Single stranded circular RNA encapsidated with a larger RNA in a plant virus is

a virion

a viroid

a virusoid

none of these

[#]

11.

Which of the following is correct when a character shows continuous variation assuming a normal distribution?

It is governed by many genes with small cumulative effect

It is not controlled genetically

Many of the variation is due to fluctuation of climate

None of the above

[#]

12.

The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as

penetrance

expressivity

inheritance strength

environmental influence

[#]

13.

At which of the following check point, mitosis is controlled?

G₁

G₂

[#]

14.

Toxicity due to accumulation of ammonia can be overcome

by substituting glutamine by glutamate

by controlled addition of glutamine at low level

by removal of ammonia or ammonium from culture medium

all of the above

[#]

15.

Which of the following is correct?

ECL can be established in suspension cultures whereas it is exceptional for primary cell lines (PCL)

ECL and PCL can be established in suspension cultures

PCL can be established in suspension cultures

none of the above

[#]

16.

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

inhibiting the cells from their supporting matrix

disintegrating the cells from their supporting matrix

none of the above

[#]

17.

SV 40 vectors, in which late region replacements are done, require

COS cell line

SV 40 helper virus

pBR 322 vector

none of these

[#]

18.

Cloning genes in the yeast offer which of following advantage(s)?

Over production of proteins of commercial value

Ability to glycosylate proteins during secretion

Ability to clone large piece of DNA

All of the above

[#]

19.

The crushed grapes are known as

malt

must

wort

sonti

[#]

20.

What is the desirable sugar content of the grapes required for the wine production?

2-5%

5-10%

10-14%

14-20%

[#]

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Online Biotechnology Test - Biotechnology Test 5

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