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Related Concept Videos

Binary Fission01:26

Binary Fission

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Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
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Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
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Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in bacteria led to the change of this opinion. Bacterial cytoskeletal filaments regulate the cell shape, cell polarity, cell division, and partitioning of plasmids during cell division. It was later discovered that bacterial cytoskeletal proteins, mainly actin and tubulin homologs, are diverse compared to their eukaryotic counterparts. On the...
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Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
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DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
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Why do bacteria divide?

Vic Norris1

  • 1Laboratory of Microbiology Signals and Microenvironment, Theoretical Biology Unit, University of Rouen, Mont Saint Aignan France.

Frontiers in Microbiology
|May 2, 2015
PubMed
Summary
This summary is machine-generated.

Cells divide to maintain their identity and adapt to environments. This process involves sensing cellular connectivity, balancing survival and growth through specialized structures, and selecting active components for coherent function.

Keywords:
FtsZcompetitive coherenceconnectivitydualismheterogeneityhyperstructuremolecular assemblyneural net

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Area of Science:

  • Cell Biology
  • Origins of Life
  • Artificial Intelligence

Background:

  • Cell division is fundamental to life, yet the underlying 'why' remains complex.
  • Existing models struggle to fully explain the integration of survival and growth strategies.
  • Understanding cellular decision-making in dynamic environments is crucial.

Purpose of the Study:

  • To propose a unified framework for understanding the 'why' and 'how' of cell division.
  • To integrate concepts from origins of life, phenotypic diversity, and artificial intelligence.
  • To explain cell division as a mechanism for maintaining cellular identity and adaptability.

Main Methods:

  • Conceptual integration of three key ideas: connectivity, phenotypic diversity, and competitive coherence.
  • Analysis of cell division as a response to decreasing cellular connectivity.
  • Examination of the cell cycle's role in generating diverse phenotypes via equilibrium and non-equilibrium structures ('hyperstructures').

Main Results:

  • Cell division is triggered by sensing decreased cellular connectivity, preserving cell identity.
  • The cell cycle generates daughter cells with varied phenotypes, balancing survival (equilibrium structures) and growth (non-equilibrium structures).
  • Competitive coherence mechanisms ensure a selected subset of cellular elements maintains cell state coherence and environmental adaptability.

Conclusions:

  • Cell division is a sophisticated process ensuring cellular identity, adaptability, and survival.
  • The framework integrates diverse biological and computational concepts to explain cell division.
  • Cells actively manage their internal states and environmental interactions through division and regulated component selection.