Science & Technology Current Affairs MCQs

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Scientists discovered a gene that may protect bananas from Panama disease. Panama disease is also called Fusarium wilt. It is caused by fungus Fusarium oxysporum f. sp. cubense living in soil for many years. It mainly affects Cavendish or G9 banana cultivar, most widely grown variety. Fungus infects through roots and blocks water and nutrient transport. Due to severe impact, it is called banana cancer. Symptoms include yellowing of older leaves, turning brown and dry. Stem becomes dark brown and plant finally dies. Dead leaves hang around lower stem forming skirt-like structure.

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An institute of the Department of Science and Technology (DST) in North East India has synthesised a novel biosurfactant effective against the bacterium Staphylococcus aureus. Staphylococcus aureus is a Gram-positive, non-motile, round-shaped bacterium from the family Staphylococcaceae. It occurs in grape-like clusters and is commonly found in the environment. It affects all mammalian species, including humans, and can be transmitted between species. Transmission occurs through air droplets, direct contact with contaminated objects, or bites from infected persons or animals. It causes minor skin infections, boils, cellulitis, abscesses, scalded skin syndrome, and may lead to pneumonia.

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An indigenously developed 30 kiloWatt Wide Band Gap based Integrated Drive System for Electric Vehicles was launched by Ministry of Electronics and Information Technology in Chennai. It was developed by Centre for Development of Advanced Computing Thiruvananthapuram with Indian Institute of Technology Madras and Lucas TVS under National Mission on Power Electronics Technology. It was launched by the Secretary of Ministry of Electronics and Information Technology at IIT Madras. The 30 kiloWatt system suits electric passenger vehicles like compact cars and fleet mobility. It reduces import dependence on semiconductor-based Electric Vehicle powertrain systems.

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The World Health Organization (WHO) and the Pan American Health Organization (PAHO) have officially verified that Chile has eliminated Leprosy, also known as Hansen’s disease. With this achievement, Chile has become the first country in the Americas and the second country globally to be officially verified as having eliminated the disease. Leprosy was first recorded in Chile in the late 19th century, primarily on Rapa Nui (also known as Easter Island). The disease remained largely confined to the island, while mainland Chile experienced only occasional sporadic cases.

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Under Swachh Bharat Mission–Urban 2.0, Thiruvananthapuram Municipal Corporation deployed the AI-powered G-SPIDER robot for safe, human-free canal cleaning in high-risk areas. The robot was commissioned at the Amayizhanchan Canal near Thampanoor Railway Station, a stretch with restricted vertical clearance, continuous water flow, and unsafe human entry points. G-SPIDER is developed by Genrobotic Innovations, based on Cable-Driven Parallel Robotics (CDPR) architecture with AI-enabled vision and sensor intelligence. It autonomously detects, assesses, and removes mixed and hazardous waste using a five-degrees-of-freedom robotic mechanism with a biomimetic claw-type grabber.

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Researchers found that Deinococcus radiodurans can survive extremely high pressures of 14,000–24,000 Earth atmospheres, similar to pressures during planetary impacts. It is a bacterium famous for its extreme resistance to ionizing radiation, earning the nickname “Conan the Bacterium.” The organism is gram-positive, non-motile, and reddish in colour. It was first discovered in 1956 in radiation-treated canned meat. It can survive radiation doses thousands of times higher than those fatal to humans, making it one of the most radiation-resistant organisms on Earth.

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Researchers recently identified an unusual iron sulfate ferric hydroxysulfate in layered deposits near Valles Marineris using laboratory experiments and orbital data. Valles Marineris, also called Mariner Valley, is a vast system of interconnected canyons on Mars. It was discovered during the Mariner 9 mission in 1971. It is one of the largest canyon systems in the Solar System. Some canyon walls are fault scarps formed due to crustal movement linked to Tharsis Rise. Erosion also shaped the canyon, seen in deep gullies along the walls.

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Indian Council of Agricultural Research–Indian Veterinary Research Institute produced Sahiwal calves using OPU–IVF–ET (Ovum Pick-Up–In Vitro Fertilization–Embryo Transfer). Sahiwal cattle is one of the best milk-producing indigenous breeds of India. It originates from Sahiwal region in Montgomery district of Punjab in Pakistan. It is also known as Lambi Bar, Lola, Montgomery, Multani and Teli. The cows are brownish-red in colour with shades from mahogany to greyish red, while bulls have darker extremities.

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Chief Minister N Chandrababu Naidu unveiled a plan to develop Amaravati as a global hub for quantum computing.
The initiative, Amaravati Quantum Valley (AQV), aims to place Andhra Pradesh among the top 5 global quantum hubs by 2030, leveraging the National Quantum Mission. The first quantum computer is set to be launched on April 14, marking a major milestone. The ecosystem will include hardware manufacturing, algorithm development, research, and innovation labs, supported by 8 dedicated research towers. The state plans to develop core technologies locally (cryogenics, photonics, advanced electronics) to reduce import dependence and achieve end-to-end capabilities.

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Scientists at the Bose Institute discovered a new gene regulation mechanism in Tuberculosis bacterium (Mycobacterium tuberculosis). Transcription is the process where DNA is copied into RNA by RNA Polymerase (RNAP) for protein synthesis. Earlier, bacteria were believed to follow the Sigma Cycle, where sigma factor binds RNAP to initiate transcription and then detaches. The study found that in TB bacteria, the sigma factor (σF) remains continuously attached to RNAP throughout transcription. This continuous binding helps activate survival genes, enabling bacteria to persist in hostile conditions inside the human body.