The pioneering German physician Robert Koch conducted his breakthrough microbiological work regarding which disease?
Show answer Hide answer
Answer: A. Tuberculosis
Explanation
Robert Koch conducted groundbreaking microbiological research that identified the bacterium causing tuberculosis. His meticulous isolation methods proved that specific microbes cause specific infectious diseases. This discovery marked a major milestone in medical bacteriology and infectious disease control. Robert Koch formulated a set of scientific postulates used to establish the causative link of diseases. Mycobacterium tuberculosis is the slow-growing pathogen responsible for chronic lung infections. Koch was awarded the Nobel Prize in Physiology or Medicine for his investigations into tuberculosis.
Understanding bacterial pathogens allowed scientists to develop effective antibiotics and public health sanitation. Tuberculosis remains a significant global health challenge requiring long-term antibiotic treatment regimens. Microbiological staining techniques pioneered by Koch are still foundational in clinical laboratories. Cholera was famously investigated by Filippo Pacini and John Snow rather than Koch alone. Malaria is caused by a parasitic protozoan rather than the bacterial agents studied by Koch. Diabetes is a metabolic endocrine disorder rather than an infectious bacterial disease.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
Related questions
Q1. The capillary phenomenon responsible for fuel rising up through the wick of an oil lamp is termed?
Show answer Hide answer
Answer: C. Capillary action
Capillary action allows liquids to flow through narrow spaces against gravity due to surface tension and adhesion. Adhesive forces between the oil and the wick fibers pull the liquid upward continuously as fuel burns. Co...
Q2. Liquid fuel ascends the wick of an operating lamp due to the physical property known as_____________?
Show answer Hide answer
Answer: D. Capillary action phenomenon
Capillary action drives liquid upward against the force of gravity. Adhesive forces between the oil and wick fibers create this movement. Cohesive forces within the liquid pull the continuous column higher. Capillarity o...
Q3. Myopia is a human ocular condition that can be successfully corrected with the application of which lens ?
Show answer Hide answer
Answer: B. Concave
Myopia is an ocular condition where light focuses in front of the retina instead of directly on it. Concave lenses are diverging optical devices that spread out incoming light rays before entering the eye. This divergenc...
Q4. Passing through food items, X-rays can eliminate___________?
Show answer Hide answer
Answer: C. Bacteria
Ionizing radiation such as X-rays damages cellular DNA and vital proteins within living microorganisms. Passing high-energy X-rays through food items effectively eliminates harmful bacteria and prevents spoilage. This pr...
Q5. Oncology is defined as the medical branch studying__________?
Show answer Hide answer
Answer: C. Cancer
Oncology is the specialized medical branch focused on malignant tumors. Oncologists study the development, diagnosis, and treatment of various cancers. This medical discipline integrates chemotherapy, surgery, and radiat...
Q6. What is the magnitude of the escape velocity on the surface of the Moon: __________?
Show answer Hide answer
Answer: A. Less than on Earth due to its lower mass and smaller radius
Escape velocity is lower on the Moon because its mass and radius are significantly smaller. Weak gravitational pull at the lunar surface requires less kinetic energy to escape into space. Smaller celestial bodies generat...