Definition of Microtubules (What are Microtubules?) Microtubules are located within the cytoplasm of every eukaryotic cells, with the exception of human erythrocytes. Microtubules are small, empty, bead-like tubular structures that aid in cell shape maintenance. These are small hollow tubes present within cells that also serve as the cell’s motor. Figure: Diagram of Microtubules Image … Read more
Morphology of Bacteria Bacteria are a sort of unicellular prokaryotic biological cell. Since they lack a membrane-bound nucleus, they are simpler than other forms of living creatures. Even though simply a few can be seen with the human eye and the rest are minuscule, they come in a variety of shapes, sizes, and architectures. Bacterial … Read more
Primary and Secondary Immune Responses: What’s the Difference? During an initial immune response, antigen activates naive B cells, which then develop into antibody-secreting cells which make antibodies unique for the antigen that triggered the response. While the same antigen stimulates memory B cells, a secondary immunological response is induced, resulting in the generation of more specific … Read more
Definition of Facilitated Diffusion Facilitated diffusion is a type of biological transport in which certain structural components of biological membranes work with specific solutes or groups of solutes to assist them to flow across the membrane much more quickly. It’s a type of passive-mediated transport in which a transport protein transports particles or molecules from … Read more
Opsonization Definition Opsonization means the ability of antibodies as well as complement components (and other proteins) to cover potentially harmful antigens, which can subsequently be detected by antibodies or complement receptors on phagocytic cells. Opsonization is The molecular process by which bacteria, apoptotic cells, or molecules are chemically changed to have greater connections with phagocyte … Read more
Definition of Stratified Columnar Epithelium The stratified columnar epithelium contains several cell layers, with the apical layer composed of columnar cells and the lower layer composed of cuboidal or columnar cells. The cells with in deeper layers may differ from those in the top layer, like in other stratified epithelium. The position and role of … Read more
Chromosome Definition The DNA molecule is bundled into thread-like structures known as chromosomes inside the nucleus of every cell. DNA is firmly enclosed numerous times just about the proteins known as histones which maintain the shape of every chromosome. Strasburger (1815) was the first to define chromosomes, while Waldeyer (1888) was the first to adopt … Read more
Membrane Carbohydrate Individual cells as well as cellular compartments remain separated by cell membranes, which are selected boundaries. Membranes are made up of binding forces that hold carbohydrates, proteins, and lipids together. Carbohydrates are covalently bonded to proteins or lipids (glycolipids) and are a major constituent of cell membranes, where they serve as cell adhesion … Read more
Definition of Monocot Flower Monocot flowers are compressed shoot areas with particular sexual reproductive functions. The greatest distinguishing feature of monocot flowers is that their flower parts are frequently arranged in threes or multiples of threes. The analysis of flowers and their components can therefore be used to distinguish among monocot and dicot plants. Despite … Read more
Definition of Binary Fission (What is binary fission?) Binary fission is a method of asexual reproduction in which a single living cell or organelle doubles in size before splitting into two similar daughter cells, each of which has the potential to expand to the size of the original cell or organelle. Binary fission is distinguished … Read more