Concept: Bacterial cellulose is a form of cellulose resulting from biosynthesis performed by bacteria from the genera Glucanacetobacter, Agrobacterium, Rhizobium, Sarcina, Alcaligenes, etc., from which the most efficient and, consequently, more thoroughly studied is Glucanacetobacter xylinus. It was in the culture medium of these gram-negative, anaerobic bacteria, often found in fruits, vegetables, vinegar and fermented […]

Cell Biology’s definition (Cytology) Cell Biology is the Biology’s branch which study the cell, focusing on its function, structure, physiological features, constituents, life cycle, division, death and interactions with other cells and surrounding environment. This branch of Biology covers both the study of single-cell organisms (bacteria and protozoa) as the study of more complex organisms, […]

Cell junctions definition Cell junctions refers to specialized regions through which cells adhere and communicate with each other or with the extracellular matrix. Cellular Communication Cells are small, with a thin, malleable plasma membrane and internally composed by liquid with suspended organelles. In addition to these characteristics, different types of cells are in line in […]

The cell lysis is the process of destruction or dissolution of the cell caused by the rupture in the plasma membrane (…)

Cholera toxin is a protein secreted by the bacterium Vibrio cholerae and responsible for the main symptom of cholera, an acute diarrhoea.

Chromatin Definition Chromatin refers to a complex formed by DNA, histones and other proteins, which makes it possible for the eukaryotic cell to condense and store all its DNA inside the nucleus. Chromatin forms chromosomes. Chromatin and Chromosomes For its cycle (growth, metabolism, differentiation, division and death), eukaryotic cell needs a lot of information, all […]

Chromosome definition Chromosome consists of a large, linear DNA molecule that is associated with proteins responsible for its packaging, forming chromatin (this structure is similar in eukaryotes, including fungi, plants and animals). The main function of chromosome is transportation of genes from parental cell to daughter cells. Chromosome constitution Due to its large size, the […]

Cytology derives from the Greek kytos (cell) and logos (study), concerns the study of the cell and aims the evaluation of their structure, function and generation as a single entity. The term “cell” was described for the first time in 1665 by the English scientist Robert Hooke. Cytology study areas Depending on the context and purpose of use, […]

Cytopathology (also known by cytology) is the branch of Pathology (medical specialty) that study the morphology of single cells with the aim of detecting morphological anomalies that aid in the diagnosis of diseases. Rudolf Virchow, a German physician, was responsible for the foundation of this discipline in 1858.   Exams ind Cytopathology The exams are […]

Genetic Code Definition Genetic Code refers to the correspondence system between a codon and an amino acid. This code is universal, i.e., it is used by (practically) all existing species, and it is redundant, which means that the same amino acid is encoded by different codons. From DNA to Protein Based on the Biology Central […]

Discription of the scientist concept, who are these people, what is there motivation and a small list with some famous scientists…

Although, at first, it may not seem that way, the seahorse is a fish. Its body has a peculiar shape and its head has resembles the head of a horse. Another curious feature is the way they swim, with the body almost upright, driven by quick movements of the dorsal fin. Its body is covered […]