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33 Cards in this Set
- Front
- Back
All amino acids have a common structure. True or False?
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True
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the carboxyl group is basic. True or False? why?
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False, acidic. it has two oxygen atoms that are highly electronegative
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How many functional groups are there in amino acids?
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4
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What are the functional groups?
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amino, carboxyl, hydrogen, R
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All amino acids have what kind of atom?
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carbon
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definition: does not interact with water
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hydrophobic
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definition: interacts readily with water
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hydrophilic
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polar amino acids are hydrophobic or hydrophilic?
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hydrophilic
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nonpolar amino acids are hydrophobic or hydrophilic?
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hydrophobic
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definition: molecular subunit
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monomer
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definition: process of linking monomers together
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polymerization
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amino acids polymerize to form...
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proteins
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definition: macromolecule
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polymer
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definition: a macromolecule that consists of linked amino acid monomers
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protein
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definition: C-N bond that results from a condensation reaction
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peptide bond
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in what type of reaction do monomers polymerize?
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condensation reaction
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in a condensation reaction, newly formed bonds lose....
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a water molecule
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definition: process where polymers break apart by adding water
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hydrolysis
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in order for monomers to link together, what is required?
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energy
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name 3 things proteins are crucial for
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structure, transport, defense, movement, catalysis, signaling
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name the order of protein structures
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primary, secondary, tertiary, quaternary
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combination of polypeptide subunits
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quaternary structure
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ionic bonding, covalent bonding, hydrogen bonding, hydrophobic interactions, and vaan der Waals interactions are important in which structure level of protein?
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tertiary structure
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alpha helix and beta pleated sheet are found in which level of structure?
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secondary
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primary protein structures are stabilized by
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peptide bonds
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secondary protein structures are stabilized by
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hydrogen bonds
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tertiary protein structures are stabilized by
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bonds and other interactions btw R-groups, or btw R-groups and the peptide-bonded backbone
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quaternary protein structures are stabilized by
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bonds and other interactions btw R-groups, and btw peptide backbones of different polypeptides
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most elements of protein structure are based on...
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folding of polypeptide chains
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occur when multiple polypeptides interact to form a single protein
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quaternary structure
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reactions take place when " " and " " happen
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reactants collide and have enough kinetic energy to overcome repulsion
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definition: amount of free energy required to reach the transition state
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activation energy
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definition: substance that lowers the activation energy of a reaction and increases the rate of reaction
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catalyst
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