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    Important Biology Chapters For AIIMS BSc Nursing Exam 2027

    Important Biology Chapters For AIIMS BSc Nursing Exam 2027

    #AIIMS Nursing
    Irshad AnwarUpdated on 22 Sep 2026, 09:33 AM IST

    Important Chapters of Biology for AIIMS BSc Nursing 2027 must be taken into consideration seriously during preparation for the entrance test. Biology is an important subject of the AIIMS BSc Nursing test, and preparation would require careful revision of NCERT Class 11 and 12 subjects. Candidates must focus on topics like Human Physiology, Cell Biology, Genetics, Molecular Biology, Reproduction, Human Health and Diseases, Plant Physiology and Ecology. However, there is no official weightage of Biology chapters by AIIMS for the BSc Nursing test.

    This Story also Contains

    1. AIIMS BSc Nursing Biology Chapter-wise Weightage
    2. Important Biology Chapters for AIIMS BSc Nursing: Chapter-wise Overview
    3. Important Questions from Biology Chapters for AIIMS BSc Nursing 2027 Exam
    4. Common Mistakes Students Make While Preparing Biology for AIIMS BSc Nursing 2027
    5. AIIMS BSc Nursing Biology Preparation Strategy
    6. How to Score Better in Biology for AIIMS BSc Nursing 2027?
    Important Biology Chapters For AIIMS BSc Nursing Exam 2027
    Important Biology Chapters for AIIMS BSc Nursing Exam

    A good preparation strategy would include NCERT study along with regular practice of MCQs, previous year questions and mock tests. Important diagrams, tables, biological processes and concepts need to be revised by candidates, and candidates need to identify their weak areas in this process. Chapters that are not considered to be a priority cannot be left out totally since questions can come from all over the syllabus. This article includes important Biology chapters, key topics, preparation strategy, and mistakes to be avoided in AIIMS BSc Nursing 2027.

    Also read:

    AIIMS BSc Nursing Biology Chapter-wise Weightage

    No chapter-wise weightage is given officially by AIIMS for Biology. Hence, the aspirants must not depend on getting a fixed number of questions from each chapter. The chapter-wise preference can be made based on the syllabus, previous year papers, current trend of the paper, and importance of NCERT concepts.

    Human Physiology, Cell Biology, Genetics, Molecular Biology, Reproduction, Human Health and Diseases, Plant Physiology and Ecology are a few of the chapters which need to be prioritised because these chapters cover a lot of concepts and questions can be framed from them.

    The aspirants also need to keep in mind that the chapters marked as low priority must not be totally neglected because questions can be asked from various topics of the Class 11 & 12 Biology syllabus.

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    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 Exam: Subject-wise to know clearly which chapters should be prioritised for a balanced preparation in all the subjects.

    Important Questions from Biology Chapters for AIIMS BSc Nursing 2027 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 2027

    Candidates often spend a great deal of time just reading Biology but neglect the aspect of practising questions and recalling information.

    • Wasting too much time on less important topics, while not completing important NCERT chapters as per AIIMS BSc Nursing chapter-wise weightage.

    • Studying NCERT just once rather than revising important information from NCERT several times.

    • Using many other books rather than mastering NCERT.

    • Solving MCQs without analysing wrong answers and guessing.

    • Answering questions without careful thinking, despite having negative marking in the examination.

    • Memorising information but not understanding biological mechanisms and their interconnection.

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    AIIMS BSc Nursing Biology Preparation Strategy

    In order to prepare for AIIMS BSc Nursing Biology, one should know about the syllabus, practice questions regularly, and prepare accordingly. Below are some tips that can help you enhance your overall performance in the exam:

    • Study NCERT Line by Line: This is because most of the questions are either directly or indirectly based on NCERT. Make notes from the chapters and revise them regularly. Students can also refer to it to strengthen the concepts of Biology deeply and revise important chapters with more efficiency.

    • Prepare Using Previous Year Questions: Preparation with the help of AIIMS BSc Nursing Previous Year's Papers will help you know about the pattern of the exam and questions that are asked regularly.

    • 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 make you aware of your strong and weak points. Practising the AIIMS BSc Nursing Mock test is also helpful for time management.

    • Making notes with the help of charts and tables: Making notes with the help of charts & tables is beneficial for quick revision during the last few days of the exam.

    AIIMS Nursing Question Papers PDF (2020–2025)
    Download AIIMS BSc Nursing previous year question papers with detailed solutions in PDF. Practise past papers, understand exam patterns and improve your preparation
    Download EBook

    How to Score Better in Biology for AIIMS BSc Nursing 2027?

    A good score in Biology requires proper memory retention and understanding, along with proper selection of questions.

    • Revisit NCERT many times rather than reading it once.

    • Pay attention to high-importance chapters while not leaving other subjects completely.

    • Practice questions from each chapter and mixed MCQs.

    • Regularly solve questions from previous years.

    • Keep a mistake book.

    • Revise diagrams, charts, and examples.

    • Never guess answers when you are not sure, since there is negative marking in the examination.

    • Attempt time-based practice tests.

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    AIIMS BSc Nursing entrance exam question papers are not available in Hindi medium. You can access the previous year's question papers and solutions from the link below:
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