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.
Enzymes (or enzymes) are proteins that act like biological catalysts (biocatalysts). Catalysts speed up chemical reactions. Substrates are molecules on which enzymes can act. The enzyme then converts these substrates into other molecules called products. Enzyme catalysis is required for almost all metabolic processes within the cell to occur at sufficient rates to sustain life. 8.1 Metabolic pathways are dependent on enzymes to catalyze individual processes. Enzymology is the study of enzymes. The pseudoenzyme analysis field recognizes that some enzymes lost their ability to catalyze biological reactions during evolution. This is often evident in their amino acid sequences or unusual ‘pseudocatalytical’ properties.
DNA replication, in molecular biology is the biological process by which two identical copies of a DNA molecule are created. As the main part of biological inheritance, DNA replication is an essential component in all living organisms. This is necessary for cell division, growth, and repair of damaged tissue. It also ensures that each new cell receives its own copy DNA. Because cells possess the unique property of division, replication of DNA is essential.
Meningitis refers to inflammation of the meninges. Meninges refer to the three membranes covering the brain and spinal chord. When fluid around the meninges becomes contaminated, meningitis may occur.
In biology, absorption refers to the procedure of absorbing or assimilating substances within cells or across tissues through the process of diffusion or Osmosis.
The duration of time that is for acute diseases is dependent according to the nature of the disease and its context however it is more concise in comparison to chronic illnesses. The term “acute” can also be used to refer to conditions where the onset of symptoms is sudden and happens quickly. In the case of severe disease is usually fulminant when it’s not always true for acute rhinitis. It is commonly associated with the common cold.
Bacteria are single-celled microscopic species that are distinguished in the absence of an incipient nucleus as well as a few organelles that have no membranes.
Agglutination reactions help fragment test antigens, which are typically coupled to the carrier. The carrier could be made up of (such as charcoal or latex particles) or biological (such as red blood cells). The process of agglutination involving Red blood cells can be known as Hemagglutination. The process that involves the white blood cells can be referred to as leukoagglutination.
