Avatar for Sourav Pan

Sourav Pan

Founder of Biology Notes Online, Biology & Microbiology Educator, M.Sc. in Microbiology
Expertise
Microbiology, Immunology, Cell Biology, Molecular Biology, Genetics, Biotechnology, Biochemistry, Botany, Zoology
Education
University of Calcutta
Profile Last Updated: August 10, 2026

Sourav Pan is the founder and sole author of Biology Notes Online. He holds a Bachelor of Science (B.Sc.) degree and an M.Sc. in Microbiology from the University of Calcutta. He creates educational resources covering microbiology, immunology, biotechnology, genetics, cell biology, botany, zoology, and other life-science subjects.

His goal is to make complex biological concepts easier to understand through well-structured, student-friendly articles based on academic textbooks, peer-reviewed research, and authoritative scientific sources. In addition to writing new content, he regularly reviews and updates articles to improve their accuracy, clarity, and educational value.

Taxonomic Evidences from Palynology, Cytology, Phytochemistry and Molecular Data

Taxonomic evidences from Palynology, Cytology, Phytochemistry and Molecular Data

In Taxonomy, evidence is the information used in context for a purpose such as identification or classification. The foundation of plant taxonomy was laid on a number of characters (attributes) of plants and plant groups studied from time to time. Such taxonomic information can be realised in many ways to prove a hypothesis, solve a … Read more

Sterilization – Physical and Chemical methods

Sterilization - Physical and Chemical methods

What is Sterilization? Important Definitions Methods of Sterilization A. Physical Methods of Sterilization Method Description Key Agents/Processes Applications Sunlight Utilizes ultraviolet rays for germicidal effects. Reduces microorganisms in natural bodies of water. Ultraviolet Rays Water sterilization Heat Involves dry heat and moist heat to kill microorganisms through protein denaturation and coagulation. Dry Heat, Moist Heat … Read more

Physical Methods of Sterilization

Physical Methods of Sterilization

What is Sterilization? Physical methods of sterilization Physical methods of sterilization involves the control of microbial growth by using Sunlight, Heat, Filtration, Radiation, etc. Physical methods of sterilization include the following: A. Heat Sterilization Heat sterilization is a fundamental technique in microbiology and medical sterilization, notable for its efficiency in destroying microorganisms through thermal means. … Read more

Methods For Maintenance and Preservation of Pure Cultures

Methods For Maintenance and Preservation of Pure Cultures

Discover essential techniques for the Maintenance and Preservation of Pure Cultures, focusing on bacterial and fungal preservation methods. This comprehensive guide covers best practices to ensure the longevity and purity of microbial cultures, making it an invaluable resource for researchers and laboratory professionals. The following points highlight the top 7 methods used for maintenance and … Read more

Archaea – Habitat, Structure, Characteristics, Importance, Examples

Archaea - Definition, Habitat, Characteristics, Importance, Examples

What is Archaea? Definition of Archaea Archaea are a domain of single-celled prokaryotic organisms distinct from bacteria, characterized by unique genetic, metabolic, and cellular features, and often found in extreme environments. Habitat of Archaea The habitat of Archaea is remarkably diverse, spanning from some of the most extreme environments on Earth to more common and … Read more

A-Z Zoology Terms With Definitions – Zoology Glossary

A-Z Zoology Terms With Definitions – Zoology Glossary

Zoology Terms Starting With A Zoology Terms Starting With B Zoology Terms Starting With C Zoology Terms Starting With D Zoology Terms Starting With E Zoology Terms Starting With F Zoology Terms Starting With G Zoology Terms Starting With H Zoology Terms Starting With I Zoology Terms Starting With J Zoology Terms Starting With K … Read more

Herbarium – Definition, Technique, Importance, Examples

Herbarium - Definition, Technique, Importance, Examples

Herbariums are fascinating repositories of plant life, offering a unique window into the diverse flora that populates our world. In this comprehensive article, we’ll delve into the definition, importance, and captivating examples of these botanical treasure troves, providing you with a deeper understanding of these remarkable institutions. What is a Herbarium? – Meaning of Herbarium … Read more

What is Plant Taxonomy? – Identification, Classification and Nomenclature

What is Plant Taxonomy? - Identification, Classification and Nomenclature

What is Plant Taxonomy? Plant taxonomy is the scientific discipline dedicated to finding, identifying, describing, classifying, and naming plants. Known also as systematic botany, it plays a crucial role in organizing the vast diversity of plant life on Earth. This field, a branch of biology, focuses on the similarities and differences among species to facilitate … Read more