Biology & Health
UPPSC - PCS Paper 1 — Science
2-min read·10 key concepts·10 facts
AI-Powered Analysis
88
PYQs Analyzed
2018–2025
Years Covered
Paper 1
UPPSC - PCS
This subtopic covers fundamental biology, health, and environmental science concepts. It is crucial for UPPSC exams as it tests knowledge on human health, ecosystems, and biological processes.
Key Concepts
DNA Structure
Double-helix model by Watson and Crick.
Vitamin Deficiencies
Link between vitamins and diseases (e.g., riboflavin → cheilosis).
Ecosystems
Types (lotic, lentic) and biodiversity factors.
In-situ Conservation
Protected areas like national parks vs. ex-situ (botanical gardens).
Plant/Animal Adaptations
Examples like xerophytes, vulture extinction due to Diclofenac.
Blood Components
Pulmonary vein carries oxygenated blood; methemoglobin causes blue baby syndrome.
Enzymes
Pepsin digests proteins in the stomach.
Global Warming Impacts
Increased cyclones, storms, and hurricanes.
Biodegradable Pollutants
Pesticides are non-biodegradable.
Ecological Niche
Resource availability affects species diversity.
Must-Know Facts
- 1Myoglobin contains iron (Q1).
- 2Riboflavin deficiency causes cheilosis (Q2).
- 3Sleeping sickness is not mosquito-borne (Q3).
- 4Double-helix DNA by Watson and Crick (Q5).
- 5Beriberi caused by polished rice (Q7).
- 6Retinol is essential for vision (Q10).
- 7Diclofenac led to vulture extinction (Q13).
- 8Methemoglobin causes blue baby syndrome (Q14).
- 9Blood glucose is measured in mg/dL (Q15).
- 10Echidna is an egg-laying mammal (Q16).
Exam Patterns
Statement-based questions dominate (e.g., Q6, Q30).
Matching lists for concepts like ecosystems (Q27, Q72).
Focus on definitions (e.g., in-situ vs. ex-situ conservation).
Questions on vitamin-deficiency diseases (Q2, Q25).
Numerical data on blood parameters (Q15).
Common Traps
Confusing in-situ (national parks) with ex-situ (botanical gardens) (Q11).
Mistaking mosquito-borne diseases (Q3: sleeping sickness is not).
Mixing up vitamin sources (Q25: B2 in cod-liver oil is incorrect).
Overlooking that pulmonary vein carries oxygenated blood (Q36).
Confusing DNA structure (Q5: Watson and Crick vs. others).
Year Highlights
2020Questions on DNA structure, vitamin deficiencies, and global warming impacts.
2021Focus on ecosystem terms, diseases, and plant/animal biology.
2023Includes modern vaccines (Moderna mRNA) and environmental pollutants.
2024Emphasized ecological niche, CPR, and blood components.
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