Bacterial Cell: Structure and its Composition

Bacterial cell structure

Bacteriology is the study of bacteria. Bacteria are minute, microscopic, simple, unicellular prokaryotic organisms occurring as saprophytes and parasites on a wide range of habitats. Structurally a bacteria cell consists of three categories of structurally namely, Structures of the External side of the cell wall.Cell wallStructures of the Internal side …

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Microbial growth and its Basics

Microbial or Bacterial Growth

Microbial growth may be described as occurring in different ways under different circumstances. Microbial growth is usually studied as a population, not an individual. Individual cells divide in a process called binary fission where two daughter cells arise from a single cell. The daughter cells are identical except for the …

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Cell Cycle : Sequential events in Cell Division

Cell Cycle : Sequential events in Cell Division

What is Cell Cycle ? The sequence of events which occurs between one cell division and the next¬† is called the Cell cycle. The cell cycle comprises the period between the release of a cell as one of the progeny of a division and its own subsequent division into two …

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Transposons: Jumping Genes at Cellular levels

Transposons Jumping Genes at Cellular levels

Transposons are segments of DNA that can move around to different positions in the genome of a single cell. In the process, they may cause mutations increase (or decrease) the amount of DNA in the genome of the cell, and if the cell is the precursor of a gamete, in …

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Euchromatin: The Packed form of Chromatin

euchromatin - packed form of chromatin

Euchromatin is a lightly packed form of chromatin (DNA, RNA, and protein) that is rich in gene concentration and is often (but not always) under active transcription. Unlike heterochromatin, it is found in both cells with nuclei (eukaryotes) and cells without nuclei (prokaryotes). It comprises the most active portion of …

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Heterochromatin: From Chromosome to Protein

Heterochromatin From Chromosome to Protein

The definition of chromatin in eukaryotes, on the contrary of prokaryotes, the DNA is packaged in the form of a nucleoprotein complex called “Chromatin“, which carries the hereditary message. It is located in a nucleus and is organized in several separate entities, the chromosomes. The Concept of Heterochromatin In 1928, …

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