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Related Concept Videos

Elements and Compounds01:27

Elements and Compounds

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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
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Periodic Classification of the Elements04:00

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The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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Classification of Elements and Compounds02:54

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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
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Plasmids01:28

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Plasmids are extrachromosomal DNA molecules found in bacteria, archaea, and some eukaryotic microbes like yeast. These small, circular DNA structures typically contain fewer than 30 genes, although some may exist linearly. Plasmids vary in their number within a cell, known as copy number. Single-copy plasmids are present in one copy per cell and multi-copy plasmids are present in multiple copies, reaching over 100 copies per cell.Plasmids usually replicate independently of the chromosomal DNA...
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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Elements: Chemical Symbols and Isotopes02:31

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A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common name)...
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Updated: Feb 1, 2026

Transposon Mediated Integration of Plasmid DNA into the Subventricular Zone of Neonatal Mice to Generate Novel Models of Glioblastoma
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Staphylococcal Plasmids, Transposable and Integrative Elements.

Neville Firth1, Slade O Jensen2, Stephen M Kwong1

  • 1School of Life and Environmental Sciences, University of Sydney, New South Wales 2006, Australia.

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Summary

Mobile genetic elements like plasmids and transposons drive antimicrobial resistance in Staphylococcus aureus. Understanding these elements is key to combating dangerous staphylococcal infections.

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Area of Science:

  • Microbiology
  • Genetics
  • Infectious Diseases

Background:

  • Staphylococcus aureus is a major cause of illness and death.
  • Antimicrobial resistance in staphylococci complicates treatment.
  • Mobile genetic elements are crucial for the spread of resistance.

Purpose of the Study:

  • To review mobile genetic elements in staphylococci.
  • To focus on elements spreading antimicrobial resistance genes.
  • To understand their role in gene mobility and expression.

Main Methods:

  • Literature review of identified mobile genetic elements in staphylococci.
  • Cataloguing plasmids, transposable elements (insertion sequences, transposons), and integrative elements (ICE, SCC).
  • Analysis of their roles in horizontal gene transfer and genome modulation.

Main Results:

  • Plasmids, insertion sequences, transposons, ICE, and SCC elements are prevalent in staphylococci.
  • These elements facilitate the acquisition and dissemination of antimicrobial resistance genes.
  • They also influence gene expression and genome rearrangement.

Conclusions:

  • Mobile genetic elements are central to the evolution and spread of antimicrobial resistance in staphylococci.
  • These elements contribute to staphylococcal pathogenicity and adaptability.
  • Targeting these elements may offer novel therapeutic strategies.