Daily Static MCQs Quiz for UPSC, IAS, UPPSC/UPPCS, MPPSC. BPSC, RPSC & All State PSC Exams
Subject : Science and Technology(8 December 2023)
1. With reference to stem cell therapy, consider the following statements:
1. It is a type of treatment that uses the patient's own stem cells to repair damaged tissue and injuries.
2. Stem cells are usually taken from bone marrow or fat tissue in the upper thigh or abdomen.
3. Bone marrow transplant is used in leukemia, tuberculosis and sickle cell anemia.
How many of the above statements are not correct?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (A)
Explanation: Stem cell therapy uses the patient's own stem cells to repair damaged tissues and injuries. It is used to treat many disorders including neuromuscular and degenerative disorders. Stem cells are usually taken from the bone marrow or fat tissue in their upper thighs or abdomen. Since it is common to remove stem cells from areas of stored body fat, some people refer to stem cell therapy as 'adipose stem cell therapy'. Hence statements 1 and 2 are correct.
Bone marrow transplantation is used in leukemia cell anemia and other immunodeficiency disorders and not tuberculosis. Hence statement 3 is not correct.
2. Consider the following:
1. Restriction Enzymes
2. Polymerase Enzyme
3. Ligase
4. Vector
5. Host
How many of the above are means of recombinant DNA technology?
(a) Only two
(b) Only three
(c) Only four
(d) All five
Answer: (D)
- Explanation: The instruments required for recombinant DNA technology are:
- Restriction enzymes: These enzymes cut DNA molecules at specific locations.
- Polymerase enzymes: These enzymes replicate DNA molecules.
- Ligases: These enzymes join DNA molecules together.
- Transporters: These are DNA molecules that can transfer DNA from one organism to another.
- Host: These are the organisms into which the vector DNA is inserted.
3. India has retained its status as a non-member of the ‘Budapest Convention’. It related to which of the following?
(a) Cyber crime
(b) Outer space
(c) Bio-remediation
(d) Global warming
Answer: (A)
Explanation: The Convention on Cyber Crime, also known as the Budapest Convention, is the first international treaty addressing Internet and computer crimes. Under the Budapest Convention, cyber crimes are considered extraditable offences.
The Budapest Convention on Cybercrime is a treaty of the Council of Europe. It came into force in 2001 and entered into force on July 1, 2004, and on November 23, 2001, Canada, Japan, the United States, and South Africa signed this convention.
India is a non-member of the Budapest Convention on Cyber Crime. India believes that sharing data with foreign law enforcement agencies is a violation of national sovereignty.
4. Consider the following pairs:
| (Missile) | (Projection) |
|---|---|
| 1. Agni | Surface to surface |
| 2. Trishul | Surface to air |
| 3. Nag | Surface to surface |
How many of the above pairs are correctly matched?
(a) Only one pair
(b) Only two pairs
(c) All three pairs
(d) None of the pairs
Answer: (B)
Explanation: Agni: It is a family of surface-to-surface medium to intercontinental range ballistic missiles. It is possible to control them due to the Global Positioning System (GPS) present in them. Agni-1 to 5 missiles have been designed and developed by Defense Research and Development Organization (DRDO). Range of Agni Missile:
- The range of Agni-1 is 700 km.
- The range of Agni-2 is 2000 km.
- The range of Agni-3 is 3000 km.
- The range of Agni-4 is 4000 km.
- The range of Agni-5 is 5000 km.
5. Consider the following statements regarding Goldilocks Zone:
1. It depends on the radiation produced by the concerned star.
2. The Earth revolves in the Goldilocks zone of the Sun.
Which of the above statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: (C)
Explanation: The Goldilocks Zone is the area around a star where a planet like Earth can contain liquid water on its surface and life is possible there. Thus, the size of the Goldilocks zone depends on the radiation generated by the respective star. Depending on the size and type of star, the distance to the Goldilocks Zone varies. Hence statement 1 is correct.
Earth's orbit is about 150 million kilometers from the Sun, which is within the Goldilocks Zone. At this distance, water exists in liquid form on Earth, which is essential for life. Hence statement 2 is correct.
