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.
What is Sycon? Definition of Sycon Sycon is a genus of small, tube-shaped calcareous sponges from the family Sycettidae, commonly found attached to rocks, corals, and mollusc shells in shallow, temperate marine waters. Sycon Classification Sycon is a genus of calcareous sponges within the broader classification system of the animal kingdom. Understanding its classification helps … Read more
What is TaqMan Probe? Definition of TaqMan TaqMan probes are hydrolysis probes used in quantitative PCR (qPCR) to increase specificity by utilizing the 5´–3´ exonuclease activity of Taq polymerase to cleave a dual-labeled probe during hybridization, resulting in a fluorescence signal that allows for precise quantification of the target DNA. Principle of TaqMan TaqMan technology … Read more
Here is the list of Top 56 Pioneers in Microbiology and their Great Contribution Antonie van Leeuwenhoek (1632–1723): The First Microbiologist Antonie van Leeuwenhoek was a Dutch scientist who is often considered the father of microbiology. He was the first to observe bacteria and other microorganisms using a microscope that he designed and built himself. … Read more
What is Urethra? Definition of Urethra The urethra is a tube that carries urine from the bladder to the outside of the body. In males, it also transports semen during ejaculation. Structure of Urethra The urethra is a fibrous and muscular tube that serves as the conduit for urine from the urinary bladder to the … Read more
Proposed syllabus and Scheme of Examination for B.Sc. (Honors) Microbiology. The B. Sc. Honours Microbiology program under the Choice Based Credit System (CBCS) is meticulously designed to provide students with a comprehensive understanding of microbiology. This program includes a mix of core courses, discipline-specific electives, generic electives, ability enhancement courses, and skill enhancement courses. Below … Read more
What is Vertebra? Definition of Vertebra A vertebra is an individual bone that forms part of the vertebral column (spine) in vertebrate animals. It is an irregularly shaped bone composed of a central body, a vertebral arch, and various processes, providing structural support, flexibility, and protection for the spinal cord. Parts of Vertebrae 1. Vertebral … Read more
The Graduate Aptitude Test in Engineering (GATE) for Biotechnology (BT) 2024 encompasses a detailed and rigorous syllabus designed to evaluate the knowledge and understanding of candidates in various domains of biotechnology. The syllabus is segmented into three primary sections: General Aptitude, Engineering Mathematics, and Core Discipline, with the Core Discipline carrying the most significant weightage. … Read more
CSIR NET, or the Council of Scientific and Industrial Research National Eligibility Test, is a national-level exam conducted in India to determine eligibility for lecturership and for awarding Junior Research Fellowship (JRF) to Indian nationals in the field of science. The exam is conducted in five subjects, including Life Sciences, Physical Sciences, Chemical Sciences, Mathematical … Read more
What is a Zygote? A zygote is a crucial concept in biology, representing the very first stage of a new organism’s development following the fertilization event. The term “zygote” (pronounced /ˈzaɪˌɡoʊt/) originates from the Ancient Greek word ζυγωτός (zygōtós), meaning ‘joined’ or ‘yoked,’ derived from ζυγοῦν (zygoun), which means ‘to join’ or ‘to yoke’. This … Read more
What is Microbiology? Microbiology, derived from the Greek words μῑκρός (mīkros) meaning ‘small’, βίος (bíos) meaning ‘life’, and -λογία (-logía) meaning ‘study of’, is the scientific discipline focused on the study of microorganisms. These microorganisms can be unicellular (single-celled), multicellular (comprising multiple cells), or acellular (lacking cellular structure). The field encompasses several sub-disciplines, including virology, … Read more