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Related Concept Videos

Microbial Growth Media01:27

Microbial Growth Media

1.9K
Microbial growth media are essential tools in microbiology, providing the nutrients and conditions necessary to cultivate and study microorganisms. These media are categorized by their composition, consistency, and functional roles, enabling researchers to investigate microbial physiology, behavior, and interactions.Types and Consistencies of Growth MediaGrowth media can be solid, liquid, or semisolid. Solid media, often agar-based, allow visible colony growth for isolation and enumeration.
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.1K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

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Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
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Measuring Caenorhabditis elegans Life Span on Solid Media
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Measuring Caenorhabditis elegans Life Span on Solid Media

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Growth of E. coli on Solid Media.

Karen L Elbing1, Roger Brent2

  • 1Clark & Elbing LLP, Boston, Massachusetts.

Current Protocols in Molecular Biology
|November 11, 2018
PubMed
Summary

This study details essential laboratory protocols for bacterial culture, including titering, isolation from single cells, and colony formation on agar plates. It also covers replica plating and methods for long-term bacterial strain preservation.

Keywords:
agar platespetri dishspreadingstab vialstreaking

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Biotechnology

Background:

  • Accurate bacterial culture and preservation are fundamental for reproducible research.
  • Standardized protocols ensure consistency in experimental outcomes.
  • Efficient methods for handling bacterial strains are crucial in various scientific disciplines.

Purpose of the Study:

  • To provide detailed, reproducible protocols for key bacterial manipulation techniques.
  • To establish best practices for isolating and maintaining bacterial cultures.
  • To offer guidance on long-term storage of bacterial strains.

Main Methods:

  • Serial dilutions for bacterial titering and isolation from single cells.
  • Agar plate streaking and suspension spreading techniques.
  • Replica plating for strain comparison and agar stab/frozen stock preparation for storage.

Main Results:

  • Established protocols for successful bacterial colony isolation and enumeration.
  • Demonstrated effective methods for replica plating.
  • Outlined reliable procedures for storing bacterial strains.

Conclusions:

  • The provided protocols facilitate accurate bacterial culture and isolation.
  • Standardized methods for replica plating and strain preservation are essential for microbiology.
  • These techniques support the advancement of research requiring consistent bacterial handling.