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19 Cards in this Set
- Front
- Back
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What are the micromolecules of Protien?
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Amino Acids
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Can amino acids be basic?
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Yes, because of the NH2
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Technically, how many amino acids are possible?
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An infinite amount, but there are actually only 20 are actually used in nature
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What is the simplest AA?
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Glycine
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Only AA with 2 ligands connected?
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Proline
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Cysteine and Methionine are special because?
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They are the only AA that have sulfur in them.
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What are polypeptide chains joined together by?
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Condensation Rxn's
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What kind of bonds does the condensation reaction cause?
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Peptide Bonds
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What are the two functional groups involved in condensation reactions?
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carboxyl and amino
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What does zwitter mean?
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"Hybrid" (in German)
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What physical properties of salt does an amino acid gain when it acts as a Bronsted-Lowry base or acid?
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It becomes a crystalline solid, has a high melting point, is very soluble in water, and is not very soluble in hydrocarbon solvents.
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Changing what changes the amount of zwitterion present?
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the pH
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What happens to zwitterions at low pH values(acidic)
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They gain an H+ on their carboxyl end
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What is the isoelectric point?
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The pH value when 50% of the AA is in zwitterionic form.
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What are three ways you can group amino acids?
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By the isoelectric points, by the polarity, and by if your body makes them or not.
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What are the 8 amino acids that you do not make in your body called?
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Essential amino acids
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Where must you get the 8 amino acids you do not make from?
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Your diet
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What amino acid is made by bacteria in the GI tract?
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His, and it is not considered essential.
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What are 2 amino acids that are very hard to get in a vegetarian diet?
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Lysine and Isoleucine
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