'Less oxygen atom' diaporamas de présentation

DNA

DNA. Nucleic Acids. In the 1860s, Swiss chemist Friedrich Miescher discovered that cell nuclei contained acids not found elsewhere. He called these nucleic acids. By 1900, biochemists had established that nucleic acids all contained: 4 nitrogenous bases, a five-carbon sugar, and

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Ionic Compounds

Ionic Compounds. Chapter 8. Forming Chemical Bonds. Section 8.1. The force that holds two atoms together is called a chemical bond. Chemical bonds may form by the attraction between a positive nucleus and negative electrons or the attraction between a positive ion and a negative ion.

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6.1 DNA and the Code of Life

6.1 DNA and the Code of Life. Pages 228-233. nuclein. A name given to DNA when it was discovered by Friedrich Miescher in 1869. Joachim Hammerling. performed experiments on Acetabularia to verify that the genetic material was in the nucleus .

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Polyatomic Ions and Naming

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