Important Biology Chapters for AIIMS BSc Nursing Exam 2025

Chapter Name

Overview

Key Topics

Cell Biology

Cell biology has described the basic principles of all living organisms. In some way, it deals with cellular structure and function, which primarily is concerned with the term 'living unit'.

Organizational differences between a prokaryotic and a eukaryotic cell.

Functions of the organelles, nucleus, mitochondria, etc.

Cell Division: Mitosis - Equational Division and Stages Of Meiosis

Human Anatomy and Physiology

The chapter centres on the structure and function of the human body in the practice of nursing.

Major human body systems are as follows: Circulatory System, Respiratory System, Digestive System, and nervous systems.

Homeostasis and its mechanisms

Anatomical Terminology and Body Organization

Genetics and Evolution

Genetics explains the distribution of characteristics, while evolution explains how species change over time.

Mendelian Patterns of Inheritance and the structure and function of DNA

Mechanism of evolution: natural selection

Microbiology

The study of micro-organisms and their roles in health and diseases can be very vital to the nursing field when it comes to infection control.

Classification: microorganisms include bacteria, viruses, and fungi.

Pathogenesis and the Immune Response

- Infection control measures

Ecology and Environment

"Ecology is the study of relations among organisms and their environment, focusing on environmental health.".

Ecosystem Dynamics and Energy Flow

• Biodiversity and its importance

A. The Environmental Impact on Health

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

Chapter Name

Weightage (%)

Cell Biology

20%

Human Anatomy and Physiology

25%

Genetics and Evolution

15%

Microbiology

20%

Ecology and Environment

20%

Chapter Name

Overview

Key Topics

Cell Biology

Cell biology is fundamental to understanding all living organisms. It covers the structure and function of cells, the basic unit of life.

- 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 Division: Learn about the processes of mitosis and meiosis, including their stages and significance.

Human Anatomy and Physiology

This chapter focuses on the structure and function of the human body, which is critical for nursing practice.

- Major Body Systems: Familiarize yourself with the circulatory, respiratory, digestive, and nervous systems.

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

- Anatomical Terminology: Learn the terms used to describe body orientation, planes, and regions.

Genetics and Evolution

Genetics explains how traits are inherited, while evolution describes how species adapt over time.

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

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

- Evolutionary Mechanisms: Learn about natural selection and how it contributes to species adaptation.

Microbiology

Microbiology studies microorganisms and their roles in health and disease, which is essential for infection control in nursing.

- 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: Familiarize yourself with strategies for preventing infections in healthcare settings.

Ecology and Environment

Ecology examines the interactions between organisms and their environments, highlighting the importance of environmental health.

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

- Biodiversity and Conservation: Understand the significance of biodiversity for ecosystem stability and human health.

- Environmental Factors: Learn about the impact of pollution, climate change, and other factors on health.

What Are The Three Laws Of Inheritance?

Difference between Gene and Chromosome

Difference Between Mitosis And Meiosis

Difference Between Karyokinesis And Cytokinesis

Central Nervous System

Generation,Conduction and Transmission of Nerve Impulse

Difference between Endocrine and Exocrine Glands

Difference between Thyroid and Parathyroid