IASbaba's Daily Static Quiz
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DAILY STATIC QUIZ will cover all the topics of Static/Core subjects – Polity, History, Geography, Economics, Environment and Science and technology.
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UPSC Static Quiz - 2020: IASbaba's Daily Static Quiz - SCIENCE & TECHNOLOGY [Day 49]
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Question 1 of 10
1. Question
Consider the following statements:
- Endonucleases remove nucleotides from the ends of the DNA.
- Exonucleases make cuts at specific positions within the DNA.
Which of the statements given above is/are NOT CORRECT?
Correct
Solution (c)
Exonucleases remove nucleotides from the ends of the DNA.
Hence Statement 1 is incorrect.
Endonucleases make cuts at specific positions within the DNA.
Hence Statement 2 is incorrect.
Incorrect
Solution (c)
Exonucleases remove nucleotides from the ends of the DNA.
Hence Statement 1 is incorrect.
Endonucleases make cuts at specific positions within the DNA.
Hence Statement 2 is incorrect.
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Question 2 of 10
2. Question
Consider the following statements:
- A plasmid can be used as vector to deliver an alien piece of DNA into the host organism.
- The cutting of DNA at specific locations is not possible.
Which of the statements given above is/are correct?
Correct
Solution (a)
A plasmid can be used as vector to deliver an alien piece of DNA into the host organism.
Hence Statement 1 is correct.
The cutting of DNA at specific locations became possible with the discovery of the so-called ‘molecular scissors’– restriction enzymes.
Hence Statement 2 is incorrect.
Incorrect
Solution (a)
A plasmid can be used as vector to deliver an alien piece of DNA into the host organism.
Hence Statement 1 is correct.
The cutting of DNA at specific locations became possible with the discovery of the so-called ‘molecular scissors’– restriction enzymes.
Hence Statement 2 is incorrect.
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Question 3 of 10
3. Question
Consider the following statements regarding introduction of alien DNA into host cells:
- In a method known as biolistics, recombinant DNA is directly injected into the nucleus of an animal cell.
- In another method, suitable for plants, cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA in a method known as gene gun.
Which of the statements given above is/are correct?
Correct
Solution (b)
In a method known as micro-injection, recombinant DNA is directly injected into the nucleus of an animal cell.
Hence Statement 1 is incorrect.
In another method, suitable for plants, cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA in a method known as biolistics or gene gun.
Hence Statement 2 is correct.
Incorrect
Solution (b)
In a method known as micro-injection, recombinant DNA is directly injected into the nucleus of an animal cell.
Hence Statement 1 is incorrect.
In another method, suitable for plants, cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA in a method known as biolistics or gene gun.
Hence Statement 2 is correct.
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Question 4 of 10
4. Question
Consider the following statements:
- Asexual reproduction preserves the genetic information, while sexual reproduction permits variation.
- Traditional hybridisation procedures used in plant and animal breeding, very often lead to inclusion and multiplication of undesirable genes along with the desired genes.
Which of the statements given above is/are NOT CORRECT?
Correct
Solution (d)
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation.
Hence Statement 1 is correct.
Traditional hybridisation procedures used in plant and animal breeding, very often lead to inclusion and multiplication of undesirable genes along with the desired genes.
Hence Statement 2 is correct.
Incorrect
Solution (d)
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation.
Hence Statement 1 is correct.
Traditional hybridisation procedures used in plant and animal breeding, very often lead to inclusion and multiplication of undesirable genes along with the desired genes.
Hence Statement 2 is correct.
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Question 5 of 10
5. Question
Consider the following statements:
- In a chromosome there is a specific DNA sequence called the origin of replication, which is responsible for initiating replication.
- An alien DNA is linked with the origin of replication, so that, this alien piece of DNA can replicate and multiply itself in the host organism.
Which of the statements given above is/are correct?
Correct
Solution (c)
In a chromosome there is a specific DNA sequence called the origin of replication, which is responsible for initiating replication.
Hence Statement 1 is correct.
An alien DNA is linked with the origin of replication, so that, this alien piece of DNA can replicate and multiply itself in the host organism.
Hence Statement 2 is correct.
Incorrect
Solution (c)
In a chromosome there is a specific DNA sequence called the origin of replication, which is responsible for initiating replication.
Hence Statement 1 is correct.
An alien DNA is linked with the origin of replication, so that, this alien piece of DNA can replicate and multiply itself in the host organism.
Hence Statement 2 is correct.
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Question 6 of 10
6. Question
In which of the parts of a cell, DNA is found?
Correct
Solution (a)
Deoxyribonucleic acid DNA is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. DNA and RNA are nucleic acid (Found in the nucleus of a cell) ; alongside proteins, lipids and complex carbohydrates (polysaccharides), they are one of the four major types of macromolecules that are essential for all known forms of life.
A small amount of DNA can also be found in Mitochondria.
Incorrect
Solution (a)
Deoxyribonucleic acid DNA is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. DNA and RNA are nucleic acid (Found in the nucleus of a cell) ; alongside proteins, lipids and complex carbohydrates (polysaccharides), they are one of the four major types of macromolecules that are essential for all known forms of life.
A small amount of DNA can also be found in Mitochondria.
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Question 7 of 10
7. Question
Consider the following statements regarding IndiGen initiative:
- The initiative was undertaken by Indian Council of Medical Research.
- Under the initiative the whole genome sequencing of the whole population of Kerala, Bihar was conducted.
Which of the statements given above is/are correct?
Correct
Solution (d)
The initiative was undertaken by The Council of Scientific & Industrial Research (CSIR).
Hence Statement 1 is incorrect.
CSIR has conducted Whole Genome Sequencing of 1,008 Indians from different populations across the country
Hence Statement 2 is incorrect.
Incorrect
Solution (d)
The initiative was undertaken by The Council of Scientific & Industrial Research (CSIR).
Hence Statement 1 is incorrect.
CSIR has conducted Whole Genome Sequencing of 1,008 Indians from different populations across the country
Hence Statement 2 is incorrect.
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Question 8 of 10
8. Question
Consider the following statements.
- Cloning of organisms is not possible through asexual reproduction.
- Cloning does not occur naturally.
Which of the above statements is/are correct?
Correct
Solution (d)
Cloning of organisms is possible through asexual reproduction.
Hence Statement 1 is incorrect.
In some cases, cloning do occur naturally.
Hence Statement 2 is incorrect.
Incorrect
Solution (d)
Cloning of organisms is possible through asexual reproduction.
Hence Statement 1 is incorrect.
In some cases, cloning do occur naturally.
Hence Statement 2 is incorrect.
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Question 9 of 10
9. Question
Which among the following are examples of biotechnology?
- Beer brewing
- Cloning
- Gene Therapy
Select the correct answer using the code given below:
Correct
Solution (d)
Biotechnology is the use of an organism, or a component of an organism or other biological system, to make a product or process for a specific use.
Incorrect
Solution (d)
Biotechnology is the use of an organism, or a component of an organism or other biological system, to make a product or process for a specific use.
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Question 10 of 10
10. Question
Which of the following statements are correct about DNA and RNA?
- All four Bases present in DNA and RNA are same, but their combination is different.
- Both DNA and RNA are double stranded.
Select the correct answer using the code given below:
Correct
Solution (d)
Base pairing in case of DNA: A-T (Adenine-Thymine), G-C (Guanine-Cytosine)
Base pairing in case of RNA: A-U (Adenine-Uracil), G-C (Guanine-Cytosine)
Hence Statement 1 is incorrect.
DNA is typically a double- stranded molecule with a long chain of nucleotides. RNA is typically a single-stranded molecule in most of its biological roles and has a shorter chain of nucleotides.
Hence Statement 2 is incorrect.
Incorrect
Solution (d)
Base pairing in case of DNA: A-T (Adenine-Thymine), G-C (Guanine-Cytosine)
Base pairing in case of RNA: A-U (Adenine-Uracil), G-C (Guanine-Cytosine)
Hence Statement 1 is incorrect.
DNA is typically a double- stranded molecule with a long chain of nucleotides. RNA is typically a single-stranded molecule in most of its biological roles and has a shorter chain of nucleotides.
Hence Statement 2 is incorrect.
