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Chapter 2.pptx - CHAPTER 2 CHEMICAL PRINCIPLES Proteins Are...

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CHEMICAL PRINCIPLES CHAPTER 2
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Proteins Are organic molecules that contain C,H,O,N, and S. Are essential in cell structure and function Enzymes are proteins that speed chemical reactions Disruption of the secondary, tertiary, and quaternary structures is called denaturation
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Figure 2.12 Amino Acids Proteins consist of subunits called amino acids
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Figure 2.14 Peptide Bonds Peptide bonds between amino acids are formed by dehydration synthesis
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Nucleic Acids Consist of nucleotides Nucleotides consist of a Pentose sugar Phosphate group Nitrogen-containing ( purine or pyrimidine ) base They are of two kinds: DNA ( Deoxyribonucleic acid) RNA ( Ribonucleic acid)
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Figure 2-12a
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Figure 2-11 (2 of 3)
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Figure 2-12b
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Figure 2.16 (Key) The Structure of DNA. Phosphate Sugar Adenine (A) Thymine (T) Sugar Phosphate Adenine nucleotide The carbon atoms in the sugars are identified by adding a marker, ’ (for example, 5’, pronounced “5- prime”). This differentiates them from the carbon atoms in the nucleo-bases, such as
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