Category Archives: Biology

Cerebrospinal Fluid Functions | Introduction| Composition

By | December 17, 2019

What is Cerebrospinal Fluid (CSF) Cerebrospinal Fluid one of the significant Body Fluid which is free from or Devoid of Red Blood Cells. Due to this characteristic CSF appear Colorless. While CSF is formed by the Choroid Plexus of Brain. It is basically an ultrafiltrate form of the plasma. In the central ventricles, spinal canal, and subarachnoid spaces Cerebrospinal… Read More »

Virus Structure | Definition | Classification & Characteristics

By | December 17, 2019

What is a Virus in Biology? Viruses Definition The word Virus comes from the Latin word means ” Slimy Liquid” or ” Poison”.  The viruses are basically small size infection-causing agents. Which multiply in only living cells of Plants, Animals or Bacteria as well. Virus Structure is described below: Virus Structure  Virus Structure and composition of viruses vary from… Read More »

Divergent Evolution | Definition, Types & Examples

By | December 4, 2019

Divergent Evolution Divergent Evolution Definition: The divergent evolution is defined as the process in which the groups having the same ancestor evolve and accumulate differences and the result comes as the formation of new species. The divergent evolution can from a response to change in Abiotic factors like a change in environmental conditions or when a new niche… Read More »

Chemiosmosis | Definition, Functions & Examples

By | November 27, 2019

Chemiosmosis Definition: What is Chemiosmosis: It is the movement of ions by diffusion across a semi-permeable membrane (the membrane inside the mitochondria). Molecule ions with net electric charge as Na+, Cl-, it generates energy H+. Ions move down an electrochemical gradient in it. It is the type of diffusion, in which ions move across a membrane from high concentration are… Read More »

Serous Membrane | Definition, Structure & Functions

By | November 23, 2019

Serous Membrane Serous Membrane Definition: The serous membrane is defined as a thin membrane that lines the internal body cavities and the organs including the heart, lungs and abdominal cavity. The thin membrane of the serous membranes is composed of mesothelium tissue that originates from mesoderm. The serous membranes permits for functionless movement lies in a number of… Read More »

Lysosomes Functions | Definition | Structure | Diagram

By | November 21, 2019

Lysosomes Definition Definition: Lysosomes are single-membrane vesicles, having an intermediate size between microsomes and mitochondria. These are surrounded by a lipoprotein membrane. Lysosomes contain hydrolytic enzymes like phosphatase and ribonuclease. Due to this, they are named as lysosomes (Lyso means lytic action). Lysosomes Functions are Described below: Lysosomes Location: Lysosomes are abundantly found in Eukaryotic Animal cells. They are present… Read More »

Proteins Functions | Definition | Types | Structure & Examples

By | November 21, 2019

Protein Definition: Proteins are basically biomolecules that high molecular weight polymers, polymers unruffled of α Amino acids.  α-Amino acids are joined to one another by Peptide linkage.  Peptide Linkage is represented as (-CO-NH-). Proteins are the most important elements of all living organisms. Proteins comprised of Carbon (C), Hydrogen (H), Nitrogen (N), Oxygen (O) and Sulphur (S). Proteins… Read More »

Smooth Muscle | Definition, Structure & Functions

By | November 21, 2019

Smooth Muscle Smooth Muscles Definition: Smooth muscle is defined as a form of muscle tissue that is used by various systems in order to apply pressure to vessels and the organs. The smooth muscles are made up of sheets or strands of smooth muscle cells. These cells contain fibers of actin and myosin that run though cells and… Read More »

Synapse | Definition, Types & Functions

By | November 18, 2019

Synapse Synapse Definition What is a Synapse: It is a small gap at the end of neurons in the central nervous system. The synapse permits a signal to pass from one neuron to the next neuron. The synapse is a region where two nerve cells connect with each other and exchange their signals. They are the complex organization… Read More »

Transitional Epithelium | Introduction, Types & Function

By | November 15, 2019

Transitional Epithelium Transitional Epithelium Definition: What is Transitional epithelium: It is defined as a stratified tissue composed of multiple cell layers, where cells constitute the tissue may change shape on the basis of distention on the organ. When an organ filled with fluid, the cells present on the topmost layer of the transitional epithelium may stretch and look… Read More »