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9 Cards in this Set
- Front
- Back
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4 organic molecules that make up cells
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proteins
nucleic acids carbohydrates lipids |
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7 biological functions performed by proteins and an example
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1. metabolic regulation
2.defense (antibodies) 3. coordination and control (hormones) 4.movement (actin, mysin) 5. support (collagen) 6. transport (HDL, LDL) 7.Buffering (pH) |
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what are the monomer units used to make up proteins
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amino acids, there are 20 different amino acids
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what two functional groups do all amino acids contain?
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amino group and carboxyl group
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what functional groups are found in the R groups?
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hydroxyl, sulfhydryl, carbonyl, amino, carboxyl
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what is a weak acid?
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it incompletely dissociates in water and becomes fully negative charged (ionized)
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3 classifications of amino acids based on R- groups
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nonpolar
polar electrically charged (either negative or positive) |
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What role do these R groups play in determining the solubility of an amino acid or protein?
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If it is nonpolar, it is hydrophobic.
if it is polar, it is hydorphilic |
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what is the primary structure of a protein? How is it formed? What holds it together?
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The unique sequence of amino acids formed by new bonds between carbon and nitrogen. held by peptide (covalent) bonds
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