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TNPSC General Science - Science and Technology - Biotechnology and Nano Technology Model Questions

TNPSC Science and Technology - Biotechnology and Nano Technology

Exam Duration: 45 Mins Total Questions : 30

1 )

The genetically engineered 'golden rice is rich in which of the following?

(a)
Vitamin-A and nicotinic acid
(b)
B-carotene, vitamin-A and folic acid
(c)
B-carotene and iron
(d)
Vitamin-A and niacin

2 )

Bt seed is associated with

(a)
Rice
(b)
Wheat
(c)
Cotton
(d)
oilseed

3 )

The American multinational company, 'Monsanto' has produced an insect resistant cotton variety that is undergoing field trials in India. A toxin gene from which one of the following bacteria has been transferred to this transgenic cotton?

(a)
Bacillus subtilis
(b)
Bacillus thuringiensis
(c)
Bacillus amyloliquifaciens
(d)
Bacillus globuli

4 )

Consider the following statements
1. The first transgenic cow is Rosie.
2. The milk of first transgenic cow contained the human alpha-lactalbumin.

(a)
Both 1 and 2
(b)
Only 1
(c)
Only 2
(d)
Neither 1 nor 2

5 )

Recombinant DNA Technology (Genetic Engineering) allows genes to be transferred
1. Across different species of plants.
2. From animals to plants.
3. From microorganisms to higher organisms.

(a)
Only 1
(b)
2 and 3
(c)
1 and 3
(d)
All of these

6 )

First transgenic mouse grew twice the normal size after drinking

(a)
Copper (Cu) Containing water
(b)
Iron (Fe) Containing water
(c)
Zinc (Zn) containing water
(d)
Radium (Ra) containing water

7 )

Consider the following statements
1. Restriction enzymes are used to cut double-stranded DNA.
2. The mobile genetic element is transposon.
3. Satellite DNA is a useful tool in forensic science.

(a)
Only 1
(b)
Only 2
(c)
1 and 2
(d)
1, 2 and 3

8 )

A transgenic food crop, which may help in solving the problem of night blindness in developing countries is

(a)
Flavr Savr tomatoes
(b)
Starlink maize
(c)
Bt soyabean
(d)
Golden rice

9 )

What is the purpose of the 'restriction enzymes' used in the genetic engineering?

(a)
Restricts the protein synthesis in cells
(b)
Cut DNA at specific base sequence
(c)
Degrade harmful protein
(d)
Join different DNA fragments

10 )

Study the flowing statements
1. The first transgenic crop was tobacco.
2. ADNA library constitutes a collection of all the DNA fragments of an organism inserted into the plasmid.
3. Restriction fragment length polymorphism method is used to distinguish DNA of one individual from another.
4. Agrobacterium tumefaciens is used extensively for genetic engineering in the plant.

(a)
2 and 3
(b)
1, 2 and 3
(c)
1 and 2
(d)
None of these

11 )

Consider the following statements
1.Monoclonal antibodies produced in the lab by hybridoma technology.
2. Hybridoma technology invented by Kohler and Milstein.
3. Hybridoma formed by mixing myeloma (cancerous) cells and B-lymphocytes.

(a)
1, 2 and 3
(b)
1 and 2
(c)
Only 2
(d)
Only 1

12 )

Plasminogen activator or enzyme TPA

(a)
Stimulating thromboplastin production
(b)
Clearing turbidity of juices
(c)
Maintaining plasma content
(d)
Dissolving blood clots

13 )

Which reference to 'stem cells' frequently in the news, which of the following statements is/are correct?
1. Stem cells can be derived from mammals only
2. Stem cells can be used for screening new drugs.
3. Stem cells can be used for medical therapies.

(a)
1 and 3
(b)
2 and 3
(c)
Only 3
(d)
1, 2 and 3

14 )

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants
1. Resist drought and increase absorptive area.
2. Tolerate extremes of pH.
3. Resist disease infestation.

(a)
Only 1
(b)
2 and 3
(c)
1 and 3
(d)
All of these

15 )

Consider about the Genetic Engineering
1. It is the indirect manipulation of an organism's genome using biotechnology.
2. An organism that is generated through genetic engineering is considered to be a genetically modified organism (GMO).
3. New DNA may be inserted into the host genome by first isolating and copying the genetic material of interest using molecular cloning methods to generate a DNA sequence, or by synthesising the DNA and then inserting this construct into the host organism.
4. Genetic engineering techniques have been applied in numerous, fields including research, agriculture, industrial biotechnology, and medicine.

(a)
1, 2 and 3
(b)
2, 3 and 4
(c)
1, 3 and 4
(d)
3 and 4

16 )

Which one of these condiments is unique due to the nanoscale interactions between its ingredients?

(a)
Ketchup
(b)
Mustard
(c)
Mayonnaise
(d)
All of these

17 )

"There is a plenty of room at the bottom." This was stated by

(a)
Issac Newton
(b)
Albert Einstein
(c)
Richard Feynman
(d)
Eric Drexler

18 )

Consider the following items
1. Bone plates
2. Bone cement
3. Contact lenses
4. Breast implants
5. Artificial ligaments and tendons
6. Dental implants for tooth fixation
7. Joint replacements
8. Skin repair devices (artificial tissue)

(a)
1, 3, 4, 5 and 7
(b)
2,3,5, 7 and 8
(c)
1, 4, 5, 6, 7 and 8
(d)
1, 2, 2, 4, 5, 6, 7 and 8

19 )

Nanorobots (nanobots)

(a)
do not exist yet
(b)
exist in experimental form in laboratories
(c)
are already used in nanomedicine to remove plaque from the walls of arteries
(d)
will be used by NASA in the next unmanned mission to Mars

20 )

What does the term ' Worm-like chain ' signify?

(a)
The worm-like chain (WLC) model in polymer physics is used to describe the behaviour of semi-flexible polymers; it is the continuous version of the Kratky-Porod model
(b)
A kind of protein chains that have the capability to tolerate very low as well as very high temperature which is present in very least marine animals
(c)
Using the tools of biotechnology, one can synthesise the artificial secondary structure of proteins which are deficient in vegetarians
(d)
A newly developed food supplements for astronauts

21 )

The size of a quantum dot is ..............m.

(a)
5
(b)
5 x 10^(-9)
(c)
5 x 10^(-10)
(d)
5 x 10^(-11)

22 )

The diameter of human hair is ...........

(a)
75000
(b)
75
(c)
7.5 x 10^(-5)
(d)
7.5 x 10^(-9)

23 )

Consider the following statements about biofuel
1. Biofuels are generally obtained from starch plants.
2. Scientists are engaged in producing Genetically Modified (GM) fungi to break down long cellulose chain to yield cheaper biofuel.
3. Manufacturing biofuel from lignocellulose may be a preferable option.

(a)
1 and 2
(b)
2 and 3
(c)
1 and 3
(d)
All of the above

24 )

Which of the following is/are correct?
1. Southern blotting technique: DNA
2. Northern blotting technique: RNA
3. Western blotting technique: Protein
4. Eastern blotting technique: Enzyme

(a)
1 and 2
(b)
2 nad 4
(c)
1, 2 and 3
(d)
All of these

25 )

What is Pig 26?

(a)
An insulin obtained from the Indian pig using the genetic engineering methods
(b)
An energy capsule being used by astronauts as food supplements
(c)
Firs animal to be created by gene editing
(d)
A new patent law enforced in the USA

26 )

Scientists have developed the peptide-based platforms to cure cancer, How?
1. They used bacterial fermentation to bind DNA or small interfering RNA and delivering them into cells to target tumours.
2. These ae helpful in silencing the targeted genes.
3. These chimeric peptides have the capabilities to degenerate the tumours.

(a)
Only 1
(b)
Only 2
(c)
1 and 3
(d)
All of these

27 )

'Srinidhi" is a new developed variety of

(a)
Chicken
(b)
Pig
(c)
Rice
(d)
Maize

28 )

The process involved in bionic chip is

(a)
Cleaving at microcellular level
(b)
Silicon microfabrication
(c)
Perfect combination of acellular and cellular mechanisms
(d)
Artificial intelligence

29 )

Consider about the golden rice
1. It is a variety of Oryza Glauber rima.
2. It is grown where there is a shortage of dietary vitamin-A
3. Carotene gives carrots their orange colour and is the reason why genetically modified rice is golden.
4. It contains two bacterium and one daffodils genes.

(a)
1, 2and 3
(b)
2, 3 and 4
(c)
2 and 3
(d)
1, 2, 3 and 4

30 )

Which of the following is not true regarding biometrics?

(a)
It is used in computer science as a form of identification and access control of humans by their characteristics or traits
(b)
Biometric identifiers are often categorised as physiological versus behavioural characteristics
(c)
It is not possible to use this technology to identify individuals in groups that are under surveillance
(d)
All of the above