From UPSC perspective, the following things are important :
Prelims level: Sonoluminescence
Why in the News?
Recent studies have provided deeper insights into the mechanics of Sonoluminescence, particularly the conditions under which light is emitted from collapsing bubbles in liquids.
What is Sonoluminescence?
Sonoluminescence is a phenomenon in which small gas bubblesin a liquid emit short bursts of light when exposed to intense sound waves.
The light is produced when thebubble undergoes rapid compression and expansion.
This is due to the alternating high- and low-pressure phasesof the sound waves, causing the gas inside to heat up and emit light.
This phenomenon was discovered in 1934 by two German engineers while they were studying sonar technology, which uses sound waves to detect objects underwater.
They noticed that when a tiny bubble in a liquid was hit by strong sound waves, it emitted a brief flash of light.
Mystery behind Sonoluminescence
Although the general mechanism is understood, the exact details of how the light is produced remain a mystery.
Scientists are still exploring the precise processes that cause the gases inside the bubble to ionize and emit light at such high temperatures.
Examples of Sonoluminescence
Controlled Experiments: In laboratory settings, scientists create sonoluminescence by trapping a bubble in a liquid and subjecting it to high-frequency sound waves.
Pistol Shrimp: When the shrimp (marine creature with a specialized claw) snaps its claw shut, it shoots out a jet of water that moves so fast it creates a low-pressure bubble. The bubble then collapses, producing a loud sound, intense heat, and sometimes a brief flash of light.
From UPSC perspective, the following things are important :
Prelims level: BHISHM Cube
Mains level: ‘Aarogya Maitri’ Diplomacy
Why in the News?
Prime Minister Modi has presented the BHISHM Cube, a state-of-the-art mobile hospital designed for rapid deployment in disaster zones to Ukraine.
What is the BHISHM Cube?
The BHISHM Cube is an advanced mobile hospital unit designed for rapid deployment in disaster zones and emergency situations.
It is developed under the “Project BHISHM” (Bharat Health Initiative for Sahyog, Hita, and Maitri), reflecting India’s commitment to providing swift medical assistance in crisis areas.
The unit is capable of treating up to 200 casualties.
Key Features:
It weighs 720 kg and is composed of 72 components that can be easily transported by hand, bicycle, or drone.
The unit can be fully operational within 12 minutes of deployment, a critical feature in emergencies where every second counts.
It includes an operating theatre, X-ray machines, ventilators, and facilities for treating a wide range of injuries.
It incorporates AI and data analytics for real-time monitoring and coordination of medical services.
It also uses RFID-tagged equipment for efficient tracking and management of medical supplies.
The unit is robust and waterproof, making it suitable for diverse environments and capable of withstanding various weather conditions.
Significance of the move
By providing the BHISHM Cube to countries in need, such as Ukraine, India demonstrates its commitment to global humanitarian efforts.
The project aligns with India’s broader initiatives like ‘Aarogya Maitri’, aimed at supporting developing countries affected by natural disasters or crises.
The deployment of the BHISHM Cube enhances disaster preparedness by ensuring that essential medical services are available when and where they are needed most.
The gifting serves as a tool of soft diplomacy, strengthening India’s international relations by contributing to global health and safety.
PYQ:
[2022] With reference to the Ayushman Bharat Digital Mission, consider the following statements:
Private and public hospitals must adopt it.
As it aims to achieve universal, health coverage, every citizen of India should be part of it ultimately.
It has seamless portability across the country.
Which of the statements given above is/are correct?
From UPSC perspective, the following things are important :
Prelims level: Polaris Dawn Mission
Why in the News?
Polaris Dawn is set to be the first privately-funded mission to conduct a spacewalk, aiming to reach an altitude of about 700 kilometers above Earth, the highest altitude for a human space mission to date.
What is Polaris Dawn Mission?
Polaris Dawn is a privately-funded space mission led by billionaire entrepreneur Jared Isaacman, in collaboration with SpaceX.
It is set to be the first non-government mission to conduct a spacewalk.
This 700km altitude will surpass the current record held by NASA’s Gemini 11 mission in 1966.
The mission will test new spacesuits designed by SpaceX to protect astronauts from high radiation levels encountered in the Van Allen Belts.
What are the Van Allen Belts?
The Van Allen Belts are two zonesof charged particles that surround Earth, held in the magnetosphere.
These belts were discovered in 1958 by American physicist James Van Allen.
Inner Belt: This belt is located approximately 680 to 3,000 km above Earth’s surface and is primarily composed of high-energy protons. It is formed by cosmic rays interacting with Earth’s atmosphere.
Outer Belt: Located about 15,000 to 20,000 km above Earth’s surface, the outer belt mainly consists of high-energy electrons captured from solar wind.
Why are the Van Allen Belts dangerous for Humans?
The Van Allen Belts are dangerous for humans because they contain high levels of radiation that can pose significant health risks to astronauts.
The belts are filled with charged particles that can cause radiation sickness, damage human tissues, and increase the risk of cancer.
PYQ:
[2011] What is the difference between asteroids and comets?
Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
From UPSC perspective, the following things are important :
Prelims level: National Human Rights Commission
Why in the News?
The NHRC India has taken suo motu cognizance of the two alleged incidents of food poisoning related deaths in an orphanage in Andhra Pradesh.
About National Human Rights Commission (NHRC)
Details
Establishment
As a Statutory Body and established under the Protection of Human Rights Act, 1993.
Functions
Inquire into any violation of human rights
Recommend immediate interim relief to victims or their families
Intervene in court proceedings involving human rights violations
Review constitutional and legal safeguards for human rights
Study international instruments on human rights
Support the efforts of NGOs working in the field of human rights
Powers
Regulate its own procedure
Possess all the powers of a civil court
Proceedings have a judicial character
May take any of the following steps upon the completion of an inquiry:
To recommend to the concerned government or authority to make payment of compensation or damages to the victim.
To recommend to the concerned government/authority the initiation of proceedings for prosecution or any other action against the guilty public servant.
To recommend to the concerned government/authority for the grant of immediate interim relief to the victim.
To approach the SC or the HC concerned for the necessary directions, orders, or writs.
Chairperson
Must be a former Justice of the Supreme Court or CJI(appointed by the President of India)
Members
Four full-time members;
Chairperson: former Supreme Court Justice or Chief Justice;
Other Member: former Judge of the Supreme Court;
Other Member: former Chief Justice of a High Court;
Three Members: with knowledge or experience in human rights, including at least one woman –
Seven ex-officio members: Chairpersons of National Commissions viz., National Commission for Scheduled Castes, National Commission for Scheduled Tribes, National Commission for Women , National Commission for Minorities, National Commission for Backward Classes, National Commission for Protection of Child Rights; and the Chief Commissioner for Persons with Disabilities.
Appointment
Appointed by the President based on a committee recommendation including the Prime Minister, Speaker of Lok Sabha, Home Minister, Leaders of the Opposition in Lok Sabha and Rajya Sabha, and others
Consultation with the Chief Justice of India for judicial appointments
Removal
By order of the President of India
Consultation with the Supreme Court before removal
Terms of Office
Hold office for a term of three years or until the age of 70
Ineligibility for further government employment after office
Eligible for reappointment
Salaries
Determined by the Central government
Reporting
Submits annual or special reports to the Central government and the concerned State government
Reports laid before the respective legislatures, along with a memorandum of action taken on the recommendations and reasons for non-acceptance of any recommendations
Limitations
The commission is not empowered to inquire into any matter after the expiry of one year from the date on which the act constituting the violation of human rights is alleged to have been committed
Functions are recommendatory in nature, with no power to punish or award relief to violators
Limited role concerning armed forces violations
PYQ:
[2011] Consider the following:
Right to education.
Right to equal access to public service.
Right to food.
Which of the above is/are Human Right/Rights under “Universal Declaration of Human Rights”?
From UPSC perspective, the following things are important :
Prelims level: Various space missions mentioned
Mains level: NA
Why in the News?
Since Chandrayaan 3’s successful moon landing on August 23, 2023 and its declaration of National Space Day, ISRO has remained highly active with several key missions, despite a quieter phase at Sriharikota.
From UPSC perspective, the following things are important :
Prelims level: World Audio Visual and Entertainment Summit (WAVES)
Why in the News?
Union Minister of Information and Broadcasting has launched 25 challenges as part of the ‘Create in India Challenge – Season 1’ for the World Audio Visual & Entertainment Summit (WAVES).
About WAVES
It is an international summit organized by the Ministry of Information & Broadcasting, Government of India.
The first edition will take place from 20-24 November 2024 in Goa.
The summit will be hosted in Goa in collaboration with the State Government of Goa.
The Entertainment Society of Goa will act as the Nodal Agency for the event, following an MOU with Ministry of Information & Broadcasting.
It is supported by industry partners like the Federation of Indian Chambers of Commerce & Industry (FICCI) and the Confederation of Indian Industry (CII).
Purpose:
WAVES aims to be a pivotal forum for fostering dialogue, trade collaboration, and innovation within the evolving media and entertainment industry.
The summit will showcase India as a hub for innovation and excellence in the media and entertainment sector, attract investments, and position India as a global leader in the entertainment business.
Location & Collaboration:
WAVES is designed to promote sustainable growth in the media and entertainment industry.
It will help attract global trade and investment to India, positioning the country as a key player in the global entertainment landscape.
The summit will bring together industry leaders, stakeholders, and innovators to explore new opportunities, tackle challenges, and shape the future of the sector.
PYQ:
[2014] Though 100 percent FDI is already allowed in non-news media like a trade publication and general entertainment channel, the government is mulling over the proposal for increased FDI in news media for quite some time. What difference would an increase in FDI make? Critically evaluate the pros and cons.
From UPSC perspective, the following things are important :
Prelims level: Orangutan Diplomacy
Why in the News?
Malaysia, after initially introducing its version of soft power called “Orangutan Diplomacy” following China’s successful “panda diplomacy,” has now reversed its decision.
What is Orangutan Diplomacy?
It is a Malaysian strategy that seeks to use orangutan conservation as a tool of soft power, inspired by China’s “panda diplomacy.”
It had first announced plans to gift orangutans (IUCN Status: Critically Endangered) to palm oil-buying countries.
It engages other countries in conservation efforts, focusing on symbolic adoptions rather than sending animals abroad.
Reasons behind:
Palm Oil Industry Criticism: Malaysia faces criticism for deforestation due to palm oil plantations, threatening orangutans.
Enhance Image: It aims to counter negative perceptions and showcase commitment to sustainability and position Malaysia as a leader in wildlife protection.
Global Cooperation: It seeks to strengthen ties with major palm oil importers like China, India, and the EU through conservation partnerships.
Criticisms:
Habitat Concerns: Critics argue real conservation requires protecting habitats, not just symbolic actions.
Comparisons to Panda Diplomacy: Malaysia’s effort lacks the infrastructure and commitment seen in China’s panda conservation.
PYQ:
[2021] With reference to ‘palm oil’, consider the following statements :
1. The palm oil tree is native to Southeast Asia.
2. The palm oil is a raw material for some industries producing lipstick and perfumes.
3. The palm oil can be used to produce biodiesel.
From UPSC perspective, the following things are important :
Prelims level: Biosimilar;
Mains level: Outdated Biosimilar Guidelines in India;
Why in the News?
The government has introduced two import-based initiatives to meet domestic needs, which could potentially dampen the growth of the domestic industry.
New medicines are generally under patent protection, preventing Indian companies from producing affordable generics/biosimilars.
Impact of two initiatives on Domestic Industry:
Global Tendering for 120 Medicines: The Department of Expenditure (DoE) allowed the Ministry of Health to buy 120 medicines, including popular anti-diabetes and anti-cancer drugs, through global tenders for government programs. This decision, which specifies certain brands for over 40 of these medicines, could increase the monopoly of foreign companies in India.
Customs Duty Removal on Cancer Medicines: The 2024-25 Union Budget proposed removing the 10-12% customs duty on three cancer medicines marketed by AstraZeneca. While intended to reduce prices, this measure is unlikely to significantly lower costs and may instead increase reliance on imports, further disadvantaging domestic producers.
Status of Indian Pharma
India is a leading manufacturer of vaccines, accounting for 60% of global production.
India supplies 70% of vaccines used by the WHO.
India is a major exporter of generic drugs, accounting for 20% of global exports.
The industry is expected to grow to over $130 billion by 2030.
What are Biosimilar guidelines?
Biosimilar guidelines in India are regulatory frameworks established by the Central Drugs Standard Control Organization (CDSCO) and theDepartment of Biotechnology (DBT) to govern the development, approval, and marketing of biosimilars.
Biosimilars are biologic medical products that are highly similar to an already approved original biologic (known as the reference product), with no clinically meaningful differences in terms of safety, purity, and potency.
Status Biosimilars:
Significant Market Size: The biosimilar market in India is valued at approximately $2.2 billion, and it is projected to reach $40 billion by 2030. This growth is driven by the expiration of patents for several key biologics, which opens the door for biosimilar development.
Product Approvals: As of now, over 70 biosimilars have been approved in India, covering a range of therapeutic areas, including oncology, diabetes, and autoimmune diseases. Notable examples include:
Adalimumab (for rheumatoid arthritis)
Trastuzumab (for breast cancer)
Filgrastim (for neutropenia)
Insulin glargine (for diabetes)
Outdated Biosimilar Guidelines in India:
Obsolete and Resource-Intensive:
India’s biosimilar guidelines are outdated, requiring mandatory animal studies, which are no longer necessary in developed countries like the U.S. and EU with stringent regulatory standards.
The guidelines also mandate clinical trials, while WHO and U.K. guidelines treat clinical trials as an exception rather than a rule.
Barrier for Domestic Producers:
The stringent requirements for animal studies and mandatory clinical trials create significant barriers for Indian producers, making it difficult for them to compete with their global counterparts.
Impact on Patient Access:
According to the International Generic and Biosimilar Medicines Association, eliminating these duplicative requirements could lead to significant savings in time and resources, ultimately improving patient access to affordable biosimilars.
Way forward:
Update Regulatory Guidelines: Modernize India’s biosimilar guidelines by removing unnecessary requirements like mandatory animal studies and clinical trials, aligning them with global standards to reduce barriers for domestic producers.
Support Local Production: Utilize provisions in the Patents Act to promote domestic manufacturing of affordable medicines, reducing reliance on imports and strengthening the local pharmaceutical industry.
From UPSC perspective, the following things are important :
Prelims level: Tera Hertz (THz) Spectrum
Why in the News?
The Telecom Regulatory Authority of India (TRAI) released its recommendations on the Tera Hertz Spectrum.
About Tera Hertz (THz) Spectrum
The THz Spectrum refers to a range of electromagnetic waves with frequencies between 100 GHz (gigahertz) and 10 THz (terahertz).
This spectrum lies betweenmicrowaves and infrared light.
It is known as the “THz gap” because it has been less explored compared to other parts of the electromagnetic spectrum.
Key Features:
Unique Properties: THz waves can pass through many materials like clothing, paper, and wood but are absorbed by water and metals.
Applications: Used for advanced technologies like imaging, communications, and spectroscopy.
Potential Uses: Security scanning, medical imaging, and high-speed wireless communication.
Impact of recent recommendation:
THEA will encourage innovation in Tera Hertz technologies, supporting the ‘Make in India’ initiative.
The opening of specific frequency bands will boost the development and deployment of next-generation wireless technologies and automotive safety systems in India.
PYQ:
[2020] With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
1. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.
2. VLC is known as long-range optical wireless communication.
3. VLC can transmit large amounts of data faster than Bluetooth.
4. VLC has no electromagnetic interference.
Select the correct answer using the code given below:
From UPSC perspective, the following things are important :
Prelims level: Polio and its eradication
Why in the News?
The World Health Organization (WHO) is investigating a suspected new strain of polio in a two-year-old child from Tikrikilla, Meghalaya.
What is Vaccine-Derived Polio?
The Oral Polio Vaccine (OPV) contains a weakened form of the poliovirus that activates an immune response in the body.
The vaccine-virus is excreted after vaccination and can circulate in the environment.
In rare cases, if the population is under-immunized, the excreted virus can mutate over time and revert to a form capable of causing paralysis.
This mutated virus is known as circulating vaccine-derived poliovirus (cVDPV).
About Polio:
Details
Nature of Disease
Crippling and potentially deadly viral infectious disease affecting the nervous system.
Types of Poliovirus
– WPV1 (Wild Poliovirus type 1)
– WPV2 (Wild Poliovirus type 2, eradicated globally)
– WPV3 (Wild Poliovirus type 3, eradicated globally)
Current Status
WPV1 remains in circulation in Afghanistan and Pakistan.
Transmission
Primarily through the faecal-oral route or contaminated water/food.
Affected Population
Largely affects children under 5 years of age.
Impact
Virus multiplies in the intestine, may invade the nervous system, causing paralysis.
Prevention
– No Cure: Preventable through immunization.
– Vaccines:
– OPV: Oral Polio Vaccine given at birth, with doses at 6, 10, 14 weeks, and a booster at 16-24 months.
– IPV: Injectable Polio Vaccine given with the 3rd dose of DPT under UIP.
India’s Status
Pulse Polio Immunization Initiative (1995)
Declaredpolio-free by WHO in 2014, with the last wild poliovirus case reported in 2011.
PYQ:
[2016] ‘Mission Indradhanush’ launched by the Government of India pertains to:
(a) immunization of children and pregnant women
(b) construction of smart cities across the country
(c) India’s own search for the Earth-like planets in outer space
From UPSC perspective, the following things are important :
Prelims level: JUICE Mission
Why in the News?
European scientists are preparing to execute a first-of-its-kind ‘Double Slingshot’ orbital maneuver to guide the JUICE probe towards Jupiter using a double slingshot technique.
About JUICE Mission:
Details
Launch
By European Space Agency (ESA) on April 14, 2023, Ariane 5 rocket
To study Jupiter’s Moons
Aim
Investigating the potential for life on Jupiter’s moons and understanding the Jovian system
Mission Duration
Approximately 12 years
Expected arrival at Jupiter in July 2031
Primary Objectives
Ganymede Exploration: Study its surface, subsurface, magnetic field, and potential subsurface ocean to assess habitability.
Europa Exploration: Investigate the surface, subsurface, and potential ocean beneath the ice; analyze interactions with Jupiter’s magnetosphere to assess its potential to support life.
Callisto Exploration: Study its surface, geological diversity, and possible subsurface ocean; understand its history of impacts and tectonic activity.
Jupiter System Exploration: Analyze Jupiter’s atmosphere, magnetosphere, and their interactions with the moons; study the dynamics of the magnetosphere and its influence on the surrounding environment.
Key Instruments
JANUS: Jovis, Amorum ac Natorum Undique Scrutator (Optical Camera)
RIME: Radar for Icy Moons Exploration
J-MAG: JUICE Magnetometer
MAJIS: Moons and Jupiter Imaging Spectrometer
Significance
First interplanetary spacecraft to the outer Solar System planets not launched by the United States
First mission set to orbit a moon other than Earth’s Moon
What is theDouble Slingshot Maneuver?
The JUICE probe will first use the moon’s gravity to set itself on the correct trajectory towards Earth.
Immediately after, it will useEarth’s gravity to slow down and redirect towards Venus and, eventually, Jupiter.
Significance of the Gravity Assist
This technique, used for decades in space exploration, involves using a planet or moon’s gravity to alter the speed or direction of a spacecraft.
It is unique as it involves back-to-back gravity assists using both the moon and Earth’s gravity, which has never been attempted before.
PYQ:
[2020] The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to
From UPSC perspective, the following things are important :
Prelims level: Schedule IV of the Wild Life (Protection) Act, 1972
Why in the News?
Many individuals, organizations, and zoos in India currently possess living specimens of exotic animal species listed under Schedule IV of the Wild Life (Protection) Act, 1972.
These exotic species must be reported and registered as mandated by the Ministry of Environment, Forest and Climate Change in the PARIVESH 2.0 Portal.
Legal Framework for Reporting of Animals in Possession
The Living Animal Species (Reporting and Registration) Rules, 2024, were notified under Section 49 M of the Wild Life (Protection) Act via a Gazette Notification on February 28, 2024.
Who Must Register: Any person or entity in possession of a living specimen of species listed in Schedule IV of the Wild Life (Protection) Act, 1972.
Failure to report and register these species within the stipulated time frame may result in penal actions.
About Schedule IV of the WPA
Details
Protection Level
Provides legal protection to species, prohibiting their hunting, capture, or trade. Protection is less stringent compared to Schedules I & II.
Offenses and Penalties
Violations can lead to fines and imprisonment, but penalties are generally less severe than those for species in higher schedules.
New Amendment (2022)
The Wildlife (Protection) Amendment Act, 2022, inserted a new Schedule IV for specimens listed in the CITES Appendices.
Examples of Species
Flamingos, Hares, Falcons, Kingfishers, Magpie, and Horseshoe Crabs.
Purpose
Ensures legal protection to prevent exploitation and population decline of species that are not critically endangered but still need protection.
General Protection Role
Plays an important role in broader conservation efforts, offering safeguards to a wider range of species in India.
PYQ:
[2020] If a particular plant species is placed under Schedule VI of The Wildlife Protection Act, 1972, what is the implication?
(a) A licence in required to cultivate that plant.
(b) Such a plant cannot be cultivated under any circumstances.
(c) It is a Genetically Modified crop plant.
(d) Such a plant is invasive and harmful to the ecosystem.
From UPSC perspective, the following things are important :
Prelims level: Quantum Non-Locality
Why in the News?
A recent study published in Physical Review Letters by Indian researchers has revealed that a universal standard for measuring quantum non-locality is impossible.
What is Quantum Nonlocality?
Quantum Nonlocality is a mysterious connection between distant objects that challenges the classical idea of local realism, where no faster-than-light communication is allowed.
It’s crucial for technologies like secure communication, random number generation, and cryptographic key creation.
Easy Explanation:
Imagine two particles that are created together and then move far apart, even to opposite ends of the universe.
In classical physics, any effect on one particle would need a signal to travel to the other, taking time.
But in quantum physics, Quantum Nonlocality means these particles are instantly connected, affecting each other no matter the distance, as if linked by an invisible thread that works faster than light.
Historical Background: Bell’s Theorem (1964)
Physicist John Stewart Bell introduced a theorem that challenged the classical idea of ‘local realism’ in quantum systems.
Local Realism: In classical physics, objects are believed to have definite properties independent of observation and are only influenced by their immediate surroundings.
Quantum Challenge: Bell demonstrated that in quantum systems with multiple, distant parts, correlations appear that cannot be explained by local realism.
Bell’s theorem was confirmed through experiments, leading to the recognition of quantum nonlocality, which was honored with the 2022 Physics Nobel Prize.
Recent Research and Findings
The research demonstrates that a universal standard for measuring and comparing quantum nonlocality is impossible.
It shows that the nature of nonlocality varies based on the type of correlation, with infinite unique points on the correlation boundary.
There is no single, universal resource in the realm of quantum nonlocality; instead, each nonlocal resource is unique, capable of performing specific tasks that others cannot.
This observation plays a key role in secure communication, random number certification, and cryptographic key generation.
PYQ:
[2022] Which one of the following is the context in which the term “qubit” is mentioned?
From UPSC perspective, the following things are important :
Prelims level: Hayflick Limit
Why in the News?
Leonard Hayflick, the renowned biomedical researcher who made a discovery about the limits of cell division in somatic cells (Hayflick Limit) has passed away at 98.
What is the Hayflick Limit?
In the early 1960s, Hayflick discovered that somatic (non-reproductive) cells have a finite number of divisions, typically between 40-60 times.
This phenomenon, the ‘Hayflick limit’ suggests that aging occurs because cells eventually stop dividing.
This leads to the accumulation of senescent cells that contribute to the aging process.
The “ultimate Hayflick limit” for humans is estimated to be around 125 years.
Beyond this, no amount of lifestyle changes or medical interventions can extend the human lifespan.
Hayflick’s discovery has been applied to cells from various animals, revealing different Hayflick limits based on species’ lifespans.
Ex. Galapagos turtles, have cells that can divide approximately 110 times, whereas laboratory mice have a much lower limit of around 15 divisions.
Broader Implications and Research
Hayflick’s discovery led to the discovery of telomeres in the 1970s.
Telomeres are protective DNA sequences at the ends of chromosomes, which shorten with each cell division.
When telomeres reach a critical length, cell division stops, which correlates with the Hayflick limit.
In the 1980s, scientists discovered telomerase, a protein capable of replenishing telomeres, which is naturally active in cancer cells, allowing them to bypass the Hayflick limit.
PYQ:
[2011] Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?
(a) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency
(b) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
(c) They neutralize the free radicals produced in the body during metabolism
(d) They activate certain genes in the cells of the body and help delay the ageing process
From UPSC perspective, the following things are important :
Prelims level: Waterspout
Why in the News?
A yacht sank off the coast of Sicily, Italy after being hit by a Waterspout.
What are Waterspouts?
A waterspout is a rotating column of air and mist over a water body.
It is a weaker relative of tornadoes and typically lasts for about five minutes, although it can occasionally last up to 10 minutes.
Size and Strength:
Average diameter: Around 165 feet.
Wind speeds: Can reach up to 100 km/hr.
Waterspouts are more common in tropical waters but can form anywhere with high humidity and relatively warm water temperatures compared to the overlying air.
Types of Waterspouts:
Tornadic Waterspouts
These are actual tornadoes that either form over water or move from land to water.
They are associated with severe thunderstorms and can be accompanied by high winds, large hail, and dangerous lightning.
Fair-Weather Waterspouts:
These are more common and form only over water during fair weather.
They are generally smaller and less dangerous than tornadic waterspouts.
PYQ:
[2020] Consider the following statements:
1. Jet streams occur in the Northern Hemisphere only.
2. Only some cyclones develop an eye.
3. The temperature inside the eye of a cyclone is nearly 10ºC lesser than that of the surroundings.
Which of the statements given above is/are correct?
From UPSC perspective, the following things are important :
Prelims level: Himalayan Yaks
Why in the News?
Around 40 Chinese yaks ventured into Indian Territory in the “Demchok” area of eastern Ladakh and are currently under the control of the local villagers.
Grazing land issue at LAC:
Nomads from both sides traditionally access grazing grounds across the LAC.
Indian nomads have been stopped by Chinese soldiers when crossing to the Chinese side.
Demchok nomads lost access to Lungkar Valley in 2022 and Nilung Valley in 2017.
Loss of these areas has negatively impacted the livelihoods of border residents.
China expanded its presence on the Indian side of Charding nala (adjacent to Demchok) since 2020 stand-off.
About Himalayan Yaks in India:
Details
Species
Belongs to the Bovini tribe, including bison, buffaloes, and cattle.
Adaptation
Can tolerate extreme cold, down to -40°C; adapted for high altitudes with long, insulating hair.
Cultural Significance
Valued by Himalayan peoples;
Linked to Tibetan Buddhism legend of Rinpoche.
Raising Method
Traditionally reared under a transhumance system; involves significant hardship.
Habitat
Endemic to the Tibetan Plateau and high-altitude regions.
Altitude Preference
Thrives above 14,000 feet; typically climbs to 20,000 feet and rarely descends below 12,000 feet.
From UPSC perspective, the following things are important :
Prelims level: Maharaja Bir Bikram Kishore Manikya Bahadur
Why in the News?
The Prime Minister has paid homage to the great Maharaja of Tripura Bir Bikram Kishore Manikya Bahadur on his birth anniversary.
Who wasMaharaja Bir Bikram Kishore Manikya Bahadur?
Details
Reign
1923 – 1947
Birth
August 19, 1908
Contributions to Tripura
– Modernized Tripura with infrastructure and educational reforms.
– Planned and designed the city of Agartala, earning the title “Architect of Modern Tripura.”-He took initiatives to explore tea cultivation and established several tea estates in Tripura.
Education and Infrastructure
– Established schools, colleges, and hospitals.
– He was instrumental in establishing the first airport in Tripura, the Maharaja Bir Bikram Airport, which greatly improved connectivity and facilitated economic growth
Social Reforms
Introduced land reforms, granted land rights to indigenous people, and worked to abolish untouchability.
Maharaja Bir Bikram was a patron of the arts and culture, supporting various cultural activities and institutions.
Military Role
Supported the British during World War II.
Legacy
Died on May 17, 1947
Remembered as a visionary ruler who played a crucial role in shaping modern Tripura.
PYQ:
[2022] The political and administrative reorganization of states and territories has been a continuous ongoing process since the mid-nineteenth century. Discuss with examples. (250 words, 15 marks)
[2007] Which one of the following is the correct chronological order of the formation of the following states as full states of the Indian Union?
From UPSC perspective, the following things are important :
Prelims level: Banni Grasslands of Kachchh
Why in the News?
A study conducted by researchers at Kachchh University assessed the suitability of different areas in Banni for sustainable grassland restoration, with ecological value being the primary criterion.
Restoration of Banni Grasslands: Highlights of the Study
Recent Study:
Objective: A study conducted by researchers at KSKV Kachchh University assessed the suitability of different areas in Banni for sustainable grassland restoration, with ecological value being the primary criterion.
Need for restoration: Originally covering about 3,800 sq. km, the Banni grasslands have shrunk to about 2,600 sq. km.
Categories of Restoration Zones: The researchers divided the grassland into five categories based on restoration suitability:
Highly Suitable: 937 sq. km (36%)
Suitable: 728 sq. km (28%)
Moderately Suitable: 714 sq. km (27%)
Marginally Suitable: 182 sq. km (7%)
Not Suitable: 61 sq. km (2%)
Restoration Potential: The “highly suitable” and “suitable” zones, making up nearly two-thirds of the Banni grasslands, can be restored easily by providing adequate water sources.
About Banni Grasslands:
The Banni Grassland is a salt-tolerant ecosystem located in the Kutch district of Gujarat, covering around 3,847 square km.
The climate is arid and semi-arid, with extremely hot summers (temperatures above 45°C) and mild winters (12°C to 25°C), receiving 300-400 mm of annual rainfall mainly during the monsoon.
It is inhabited by pastoral communities like the Maldharis, who rely on livestock grazing (cattle, buffalo, and sheep) for their livelihood.
Agriculture is limited due to arid conditions, with some areas used for salt production.
Flora: Grasses such as Dichanthium, Sporobolus, and Cenchrus species, with salt-tolerant plants, shrubs, and trees like Acacia and the invasive Prosopis juliflora.
Fauna: Indian wolf, hyena, chinkara, Great Indian Bustard, flamingos, and various raptors, reptiles, and invertebrates.
PYQ:
[2021] The vegetation of Savannah consists of grassland with scattered small trees, but extensive areas have no trees. The forest development in such areas is generally kept in check by one or more or a combination of some conditions. Which of the following are such conditions?
1. Burrowing animals and termites
2. Fire
3. Grazing herbivores
4. Seasonal rainfall
5. Soil properties
Select the correct answer using the code given below.
