Daily Current Affairs Quiz: February 07, 2026

Statement 1 is correct: CRISPR is a gene-editing tool that can precisely modify DNA, including in human embryos (though this raises major ethical and regulatory concerns).

Statement 2 is correct: CRISPR is widely used in agriculture to create disease-resistant, stress-tolerant, and high-yield crops by editing specific plant genes.

Statement 3 is incorrect: CRISPR works on biological DNA; it has no role in designing electronic hardware like computer processors.

Statement 1 is correct: Nanomaterials enable targeted drug delivery, allowing medicines to act specifically at disease sites, improving therapeutic efficiency while minimizing systemic side effects.

Statement 2 is correct: Nanomaterial-based biosensors offer very high sensitivity and specificity, helping in early disease detection through rapid identification of biomarkers.

Statement 3 is correct: In tissue engineering, nanomaterials provide scaffolds that mimic natural extracellular matrices, supporting cell growth and aiding regeneration of tissues and organs.

Statement 4 is incorrect: Although toxicity and environmental concerns exist, nanomaterials are not discontinued; instead, safer designs and regulations are being developed to expand medical applications.

• Communicable diseases are caused by external infectious agents (bacteria, viruses, fungi, parasites) and can spread from person to person.
• Non-infectious (non-communicable) diseases arise from internal or non-infectious factors like genetics, lifestyle, or environmental exposure (e.g., diabetes, cancer).

Fast Breeder Reactors use liquid sodium as a coolant because it has excellent heat-transfer properties and does not slow down (moderate) neutrons, which is essential for fast-neutron operation.

Statement 1 is correct: Fusion is the same nuclear process that powers the Sun and stars, where light nuclei combine to release enormous amounts of energy.

Statement 2 is incorrect: Fusion on Earth is still experimental and not commercially viable; it is far less efficient than mature renewable technologies like solar power.

Statement 3 is correct: Current fusion research primarily uses deuterium and tritium (hydrogen isotopes) because they fuse at comparatively lower temperatures.