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    Important Biology Chapters For AIIMS BSc Nursing Exam 2026

    Important Biology Chapters For AIIMS BSc Nursing Exam 2026

    Irshad AnwarUpdated on 18 May 2026, 10:13 AM IST

    The AIIMS BSc Nursing Exam 2026 is one of the most important exams for nursing aspirants. Questions are asked from Physics, Chemistry, Biology, and General Knowledge. Biology holds a weightage of 30 out of 100 marks. Learning the Important Biology Chapters for AIIMS BSc Nursing Exam 2026 will give a clear direction for preparation.

    This Story also Contains

    1. Important Biology Chapters for AIIMS BSc Nursing: Chapter-wise Overview
    2. Important Questions from Biology Chapters for AIIMS BSc Nursing 2026 exam
    3. Common Mistakes Students Make While Preparing Biology for AIIMS BSc Nursing 2026
    4. AIIMS BSc Nursing Biology Preparation Strategy
    5. How to Score 28+ Marks in Biology for AIIMS BSc Nursing 2026
    Important Biology Chapters For AIIMS BSc Nursing Exam 2026
    Important Biology Chapters for AIIMS BSc Nursing Exam

    Also read:

    The Biology syllabus is mainly based on NCERT Class 11 and 12 topics. Some chapters are asked more often in the exam. Human Physiology, Genetics, Cell Biology, Reproduction, and Ecology are considered very important because questions from these chapters are asked repeatedly in the exam. This article covers the important chapters, exam pattern, and a simple plan to prepare well for the AIIMS BSc nursing exam.

    Important Biology Chapters for AIIMS BSc Nursing: Chapter-wise Overview

    Some of the important Biology chapters and key topics for the AIIMS Nursing Exam:

    Chapter Name

    Key Topics

    Cell: Structure and Functions

    • Structure of Cells: Understand the differences between prokaryotic and eukaryotic cells.

    • Functions of Organelles: Study the roles of various organelles such as the nucleus, mitochondria, endoplasmic reticulum, and ribosomes.

    Cell Cycle and Cell Division

    • Mitosis: It is a type of cell division that produces two genetically identical daughter cells, helping in growth, repair, and maintenance of the body.

    • Meiosis: Meiosis is a cell division that reduces the chromosome number by half, forming four genetically unique haploid cells.

    Body Fluids and Circulation

    • Components: Blood transports gases, nutrients, and wastes, while the heart acts as a pump that circulates blood.

    • Homeostasis: Understand the mechanisms that maintain a stable internal environment.

    Exchange of Gases

    • Lung Volume and Lung Capacity: Lung volume is the quantity of air during breathing, while lung capacity is the combination of the volume.

    Principles of Inheritance and Variation

    • Mendelian Genetics: Study the principles of inheritance, including dominant and recessive traits.

    • Chromosomal Abnormalities: These abnormalities occur due to changes in chromosome number or structure, leading to disorders like Down, Turner, or Klinefelter syndromes.

    Molecular Basis of Inheritance

    • DNA Structure and Function: Understand the role of DNA in heredity and protein synthesis.

    • Central Dogma: The central dogma describes the flow of genetic information from DNA to RNA and RNA to protein.

    • Human Genome Project: The Human Genome Project mapped the entire human DNA sequence.

    Human Health and Diseases

    • Classification of Microorganisms: Understand the characteristics of bacteria, viruses, fungi, and protozoa.

    • Pathogenesis: Learn how microorganisms cause diseases and the body’s immune response.

    • Infection Control: Familiarise yourself with strategies for preventing infections in healthcare settings.

    Organisms and Population

    • Ecosystem Dynamics: Study the components of ecosystems and how energy flows through them.

    • Ecological Interactions: These are relationships between organisms such as predation, competition, and mutualism.

    Ecosystem

    • Ecological Pyramids: These are graphs that represent the flow of energy, biomass, or number of organisms at different trophic levels in an ecosystem.


    Apart from preparing with these important chapters from Biology, you should also check a complete list of Important Chapters for AIIMS BSc Nursing 2026 Exam: Subject-wise to know clearly which chapters should be prioritised for a balanced preparation in all the subjects.

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    Important Questions from Biology Chapters for AIIMS BSc Nursing 2026 exam

    Here’s a table of important questions related to important biology chapters for the AIIMS BSc Nursing Exam, along with their answers:

    S. No

    Question

    Answer

    Chapter Name

    1

    What is the basic unit of life?

    Cell

    Cell Biology

    2

    What are the main components of the circulatory system?

    Human Heart, blood vessels, blood

    Human Anatomy and Physiology

    3

    What is Mendel's law of segregation?

    Alleles separate during gamete formation

    Genetics and Evolution

    4

    What is the role of bacteria in the nitrogen cycle?

    Nitrogen fixation

    Microbiology

    5

    What is an ecosystem?

    A community of living organisms interacting with their environment

    Ecology and Environment

    Common Mistakes Students Make While Preparing Biology for AIIMS BSc Nursing 2026

    Many students spend hours reading Biology repeatedly, but still struggle to improve accuracy while solving MCS. Avoid these common mistakes to improve overall performance in the AIIMS BSc Nursing entrance exam.

    • Spending too much time on reading the low-weightage chapters while skipping the ones asked repeatedly in the exam. To understand which topics should be prioritised, refer to AIIMS BSc Nursing Subject-Wise Weightage 2026: Physics, Chemistry & Biology
    • Revising chapters only once or twice and not following a regular revision schedule.
    • Using too many books rather than focusing on limited but reliable resources.
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    AIIMS BSc Nursing Biology Preparation Strategy

    Preparing for AIIMS Nursing Biology requires clear understanding of the syllabus, regular question practise and focused study plan. Here are some tips to help you increase your overall score in the exam:

    • Focus on NCERT: Study NCERT line-by-line as most of the questions are directly or indirectly asked from it. Make notes from the chapters and revise them regularly. Students can also refer to the best books for AIIMS BSc Nursing 2026 preparation to strengthen the concepts of Biology deeply and revise important chapters with more efficiency.

    • Prepare with the help of PYQs: Preparing by taking help from AIIMS BSc Nursing Previous Year's Papers allows you to get familiar with the exam pattern and the types of questions which are asked frequently.

    • Practice chapter-wise MCQs: After completing each unit practise questions of the same unit. This not only strengthens your memory but also helps you know the type of questions asked in the exams.

    • Revise diagrams: Most of the students leave diagrams and tables given in the NCERT textbook. Do not forget to revise them as questions are asked from them as well.

    • Weekly mixed-chapter test: After you have completed a few chapters, take a test consisting of questions from all the chapters. This will help you find your strengths and weaknesses. Regular practice of the AIIMS BSc Nursing Mock test also helps improve time management and accuracy.

    • Note-making using charts & tables: Charts & tables are concise and help you revise quickly during the last few days of the exams.

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    How to Score 28+ Marks in Biology for AIIMS BSc Nursing 2026

    Many students lose marks in Biology not because the questions are difficult, but because direct lines from NCERT, diagrams, and statement-based concepts are often revised superficially. Read the points given below to understand what needs to be done to score 28+ in the AIIMS Nursing exam.

    • Learn elimination techniques for statement-based questions to reduce negative marking.
    • Revise at least one unit daily instead of studying the same chapter continuously for many hours.
    • Prepare a mistake notebook to record all the mistakes you've made while solving mock and PYQs. Revise those mistakes and improve for the final exam.
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    Questions related to AIIMS Nursing

    On Question asked by student community

    Have a question related to AIIMS Nursing ?

    Hello Rubenu Katta,

    You can access the AIIMS Nursing Officer Previous Year Question Papers PDF with Solutions through the link provided below:

    https://medicine.careers360.com/articles/aiims-nursing-officer-previous-year-question-papers

    Hope this Helps!

    Yes, you can upload the state SC certificate for AIIMS BSc Nursing  during registration if the exam form allows it. However, it is strongly recommend to use the central govt format for the application process.

    Thanks,