BSN Entry Test Biology Most Important Topics 2026
The top 4 BSN Entry Test Biology chapters (Biodiversity and Variety of Life, Cell Structure and Function, Coordination and Control and Biological Molecules) carry about 45 percent of the 40 Biology MCQs on the BSN Entry Test paper. All 21 chapters BSN Entry Test examines are ranked below, with the method stated in full under the table.
Mapped from 48 solved past papers (2005 to 2025).
BSN Entry Test Biology chapter frequency table
All 21 Biology chapters on the BSN Entry Test syllabus, heaviest first. The subtopics under each chapter name are the ones it is most often examined on.
| # | Chapter | Expected MCQs | Share of Biology | Priority |
|---|---|---|---|---|
| 1 | Biodiversity and Variety of LifeKingdom Animalia, Kingdom Prokaryotae, Kingdom Plantae | 6.2 | 15.6% | Critical |
| 2 | Cell Structure and FunctionChromosomes, Cytoplasmic Organelles, Animal and Plant Cell | 4.5 | 11.3% | Critical |
| 3 | Coordination and ControlChemical Coordination and Hormones, Brain, Neurons and Nerve Impulse | 3.8 | 9.5% | Critical |
| 4 | Biological MoleculesCarbohydrates, Proteins, Ribonucleic Acid (RNA) | 3.3 | 8.3% | Critical |
| 5 | InheritanceMendel's Laws of Inheritance, X-linked Recessive Inheritance, Gene Linkage and Crossing Over | 2.0 | 5.0% | Important |
| 6 | Support and MovementHuman Skeleton, Muscles, Muscle Contraction | 2.0 | 5.0% | Important |
| 7 | CirculationBlood Vessels, Human Heart, Lymphatic System | 1.9 | 4.7% | Important |
| 8 | Forms and Functions of PlantsPlant Nutrition and Transport, Plant Growth Regulators | 1.8 | 4.5% | Important |
| 9 | HomeostasisKidney and Urinary System, Excretion, Thermoregulation | 1.8 | 4.5% | Important |
| 10 | DigestionHuman Digestive System | 1.7 | 4.3% | Important |
| 11 | ReproductionHuman Reproductive System, Menstrual Cycle, Sexually Transmitted Diseases | 1.6 | 4.1% | Important |
| 12 | BioenergeticsCellular Respiration | 1.6 | 4.0% | Standard |
| 13 | EnzymesCharacteristics of Enzymes, Factors Affecting Enzyme Action, Enzyme Inhibitors | 1.3 | 3.3% | Standard |
| 14 | BiotechnologyBiotechnology and Health Care | 1.3 | 3.3% | Standard |
| 15 | EvolutionConcept of Evolution, Darwinism, Lamarckism | 1.1 | 2.7% | Standard |
| 16 | Man and His EnvironmentEcosystems, Pollution and Conservation | 1.0 | 2.5% | Standard |
| 17 | RespirationHuman Respiratory System, Gaseous Exchange in Lungs, Effects of Smoking | 0.9 | 2.2% | Standard |
| 18 | Acellular LifeViruses, AIDS and HIV Infection | 0.8 | 2.0% | Standard |
| 19 | ImmunitySpecific Defense Mechanism | 0.6 | 1.6% | Standard |
| 20 | Growth and DevelopmentEmbryonic Development, Regeneration and Ageing | 0.6 | 1.5% | Standard |
| 21 | Introduction to BiologyMajor Fields of Specialization, Levels of Biological Organization | 0.1 | 0.3% | Standard |
How this was worked out: We do not hold solved BSN Entry Test papers yet. Biology on BSN Entry Test examines the same chapters as ETEA MDCAT, MDCAT, NUMS, so the chapter shares measured across those 48 papers (2005 to 2025) are applied to the 40 Biology MCQs BSN Entry Test actually carries. The ranking is measured; the totals are BSN Entry Test's own. Once BSN Entry Test papers are added here, this table is recomputed from them.
Top 10 most important Biology topics for BSN Entry Test 2026
Biodiversity and Variety of Life
CriticalBiodiversity and Variety of Life is 15.6 percent of the BSN Entry Test Biology paper and works out at about 6.2 MCQs on the current paper. It is examined mostly on Kingdom Animalia, Kingdom Prokaryotae and Kingdom Plantae.
Cell Structure and Function
CriticalCell Structure and Function is 11.3 percent of the BSN Entry Test Biology paper and works out at about 4.5 MCQs on the current paper. It is examined mostly on Chromosomes, Cytoplasmic Organelles and Animal and Plant Cell.
Coordination and Control
CriticalCoordination and Control is 9.5 percent of the BSN Entry Test Biology paper and works out at about 3.8 MCQs on the current paper. It is examined mostly on Chemical Coordination and Hormones, Brain and Neurons and Nerve Impulse.
Biological Molecules
CriticalBiological Molecules is 8.3 percent of the BSN Entry Test Biology paper and works out at about 3.3 MCQs on the current paper. It is examined mostly on Carbohydrates, Proteins and Ribonucleic Acid (RNA).
Inheritance
ImportantInheritance is 5.0 percent of the BSN Entry Test Biology paper and works out at about 2.0 MCQs on the current paper. It is examined mostly on Mendel's Laws of Inheritance, X-linked Recessive Inheritance and Gene Linkage and Crossing Over.
Support and Movement
ImportantSupport and Movement is 5.0 percent of the BSN Entry Test Biology paper and works out at about 2.0 MCQs on the current paper. It is examined mostly on Human Skeleton, Muscles and Muscle Contraction.
Circulation
ImportantCirculation is 4.7 percent of the BSN Entry Test Biology paper and works out at about 1.9 MCQs on the current paper. It is examined mostly on Blood Vessels, Human Heart and Lymphatic System.
Forms and Functions of Plants
ImportantForms and Functions of Plants is 4.5 percent of the BSN Entry Test Biology paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Plant Nutrition and Transport and Plant Growth Regulators.
Homeostasis
ImportantHomeostasis is 4.5 percent of the BSN Entry Test Biology paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Kidney and Urinary System, Excretion and Thermoregulation.
Digestion
ImportantDigestion is 4.3 percent of the BSN Entry Test Biology paper and works out at about 1.7 MCQs on the current paper. It is examined mostly on Human Digestive System.
Every Biology chapter on the BSN Entry Test syllabus
19,844 free Biology MCQs across 21 chapters, every answer explained.
BSN Entry Test Biology most important topics: frequently asked questions
What are the most important Biology topics for BSN Entry Test 2026?
The highest-value BSN Entry Test Biology chapters are Biodiversity and Variety of Life (about 6.2 MCQs), Cell Structure and Function (about 4.5 MCQs), Coordination and Control (about 3.8 MCQs), Biological Molecules (about 3.3 MCQs) and Inheritance (about 2.0 MCQs). Together they account for 50 percent of the 40 Biology MCQs on the BSN Entry Test paper. The ranking is derived rather than counted from BSN Entry Test papers; the method is stated in full on this page.
How many Biology MCQs are on the BSN Entry Test paper?
Biology is worth 40 MCQs on the BSN Entry Test paper as set by Nursing Colleges and Universities, spread across 21 chapters. This page ranks all 21 of them by how many of those MCQs each chapter is worth.
Are these BSN Entry Test Biology numbers counted from past papers?
Not from BSN Entry Test papers, and this page does not claim they are. TestUstad does not hold solved BSN Entry Test papers yet. Biology on BSN Entry Test examines the same chapters as ETEA MDCAT, MDCAT and NUMS, so the chapter distribution measured across those 48 papers is rescaled to the 40 Biology MCQs BSN Entry Test carries. The order is measured, the totals are BSN Entry Test's own.
Should I skip the low-priority Biology chapters for BSN Entry Test?
No. Every chapter in this table appears on the BSN Entry Test paper, and BSN Entry Test is decided by a handful of marks. A chapter marked Standard still costs you the marks you drop on it. Use this ranking to decide the order you study in and how long you spend on each chapter, not to cut chapters out.
Where can I practise these BSN Entry Test Biology chapters?
Every chapter on this page links to its own free Biology MCQs on TestUstad, 19,844 questions across the 21 chapters BSN Entry Test examines. Practice is free and unlimited with no account, and every question carries a written explanation of why the correct option is correct.