Definition of Antimicrobial Agent Antimicrobial agent refers to those chemical or physical agents which are used to kill microorganisms or prevent their growth. There are present several types of microorganism which are responsible for infection or disease in animal or human body such as fungi, bacteria, virus, etc. Similarly, there are present different types of … Read more
Definition of Pseudostratified columnar epithelium A pseudostratified columnar epithelium an epithelium made up of only one layer of cells which creates the appearance of multiple layers due to the nuclei in the cells are located at various levels. It is histologically an epithelium that is simple, even though when viewed from a cross-section it could … Read more
What is a Signal Transduction Pathway? Definition of Signal Transduction Pathway A signal transduction pathway is a series of molecular events inside a cell that converts an external signal into a specific cellular response. Components of signal transduction Signal transduction involves several key components that are common in both plants and animals. These components include: … Read more
Pathogenicity is the capacity of a microorganism to cause disease in a host. Virulence refers to the intensity or degree of pathogenicity. The virulence varies among different microorganisms and also among strains of same species. Virulence factors are the structures, substances or properties which help a pathogen to cause infection. These factors help the microorganism … Read more
The Davson Danielli model (or the paucimolecular model) was an illustration that depicts the membrane in cells. It was developed in the year 1935 by Hugh Davson and James Danielli The model is a bilayer of phospholipids which is located within two layers of protein globular. the model is trilaminar as well as lipoproteinous.
Mesosomes and chondrioids are foldable into invaginations of the plasma membranes of bacteria. They are made through chemical fixation techniques that are used to prepare samples for electron microscopy.
What are Inclusion Bodies? Inclusion bodies are thick in size, spherical and aggregated proteins typically found inside the cells of protokaryotes thanks to the overexpression of heterologous proteins. Inclusion bodies comprise small particles that are freely suspended and floating in the cell wall. This is why they are also known as inclusions of the cytoplasm. … Read more
The Nucleoid (meaning it’s like a nucleus) is an irregularly-shaped part of the prokaryotic cell which is home to all or most part of the gene material. The chromosome of a protokaryote is circular and its length is big in comparison to cell dimensions, which is why it has to be compressed to be able to fit. Contrary to the nucleus in a prokaryotic cell, it’s not protected by the nuclear membrane.
Chromosomes are a collection of tightly coiled DNA that are located in the nucleus of virtually every cell of our body. Humans possess 23 chromosome pairs.
A chromosome disorder, also known as Chromosome Abnormalities is caused by an alteration in the size or the structure of chromosomes.
