Biology & Health
TNPSC - Group 1 Paper 1 — Science
2-min read·10 key concepts·10 facts
AI-Powered Analysis
32
PYQs Analyzed
2019–2025
Years Covered
Paper 1
TNPSC - Group 1
This subtopic covers fundamental biology and health concepts, including respiration, genetics, and environmental impacts. It is crucial for TNPSC exams due to frequent questions on biological processes and health-related topics.
Key Concepts
Anaerobic Respiration
End product is ethanol and CO2 in yeast.
Thalassemia
Genetic disorder affecting hemoglobin production.
Red Blood Cell Production
Tulsi plant boosts RBC production.
Eco-friendly Practices
Organic farming reduces environmental harm.
UV Protection
Ozone layer blocks harmful UV rays.
Mantoux Test
Diagnoses tuberculosis via skin reaction.
DNA Enzymes
Helicase unwinds DNA during replication.
Seed Germination
Imbibition of water resumes metabolic activities.
Whooping Cough
Caused by Bordetella pertussis.
Biodiversity
Includes species, genetic, and ecosystem diversity.
Must-Know Facts
- 1Anaerobic respiration ends with ethanol (2019).
- 2Thalassemia involves 1 and 2 (2019).
- 3Tulsi boosts RBCs (2019).
- 4Organic farming is eco-friendly (2021).
- 5Ozone layer protects from UV (2022).
- 6Mantoux test identifies TB (2024).
- 7Helicase unwinds DNA (2022).
- 8Imbibition resumes metabolism (2022).
- 9Whooping cough caused by B. pertussis (2024).
- 10Biodiversity includes species and ecosystems (2021).
Exam Patterns
Statement-based questions dominate.
Match the following questions are common.
Facts about diseases and their causes are tested.
Environmental impact questions are frequent.
Concept-based questions on biological processes.
Common Traps
Confusing anaerobic vs. aerobic respiration products.
Mixing up Thalassemia types (1 and 2).
Overlooking ozone layer's role in UV protection.
Confusing DNA enzymes (e.g., helicase vs. polymerase).
Misremembering causes of diseases like whooping cough.
Year Highlights
2024Questions on Rote learning, Mantoux test, and algae growth due to eutrophication were prominent.
2022Focus on DNA enzymes, seed germination, and ecesis in new habitats.
2021Emphasis on climate change effects and eco-friendly practices.
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