Welcome to Biology Notes Online! We are the BNO Team, dedicated to providing high-quality, accessible biology study notes for students and teachers alike. Our goal is to simplify complex biological concepts and present them in an easy-to-understand format, entirely free of charge. Whether you're preparing for exams, teaching a class, or simply passionate about biology, our comprehensive notes are designed to support your learning and teaching journey.
Primary succession can be described as a kind of eco-succession that occurs in an area that is new and has no suitable soil, and is first colonized with living creatures.
Passive and active transport are two different methods to move molecules across cells’ membranes. The cell membrane is multi-tasking device that provides structure to the cell , while protecting the contents of the cytosol from the outside environment.
An autotroph is one of the groups of organisms that can produce their own food using diverse substances like sunlight, water and various other chemical compounds.
Phenotype is a term that is used in genetics to describe all traits that can be observed in living organisms that result of interactions of the genotype and the environment.
Vascular plants, often referred to as tracheophytes, are the plants on the land with cells that are lignified to conduct minerals and water all over the body.
The rough and smooth ERs are the two kinds of endoplasmic-reticulum that form an interconnected system made up of membrane-bound channels that are located in the cell’s cytoplasm. ER is an organelle that is enclosed by membranes found only in the eukaryotic cell.
Cilia and Flagella are tiny structures attached to eukaryotic and prokaryotic cells. They protrude from the surface of their cells. These structures help in the locomotion of unicellular organisms. Accordingly, they mainly contain proteins called microtubules or basal bodies. In the case of single-celled eukaryotic organisms, both cilia and flagella are vital for locomotion.
Transcription is the process by which the genetic information stored on DNA strands is transferred into an RNA-RNA strand via the polymerization process caused by enzymes known as DNA-dependent polymerases.
Mitochondria originates of the Greek word meaning’mitos’ thread and ‘chondrios’-granule. Mitochondria are also referred to as the “powerhouse of cells’ because their primary purpose is to generate energy through the process of ATP.
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