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33 Cards in this Set

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