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2023/24
,WGU |C785 |FINAL |EXAM |2023 |(100% |CORRECT)
WGU |C785 |FINAL |EXAM |2023 |(100% |CORRECT)
What |is |the |basic |structure |of |an |amino |acid? |What |do |they |look |like? |- |correct
|answer |amino |group |(NH2 |or |NH3), |carboxyl |group |(COO |or |COOH), |alpha |carbon
|(C), |and |variable |group
How |do |you |identify |the |3 |different |types |of |side |chains: |non-polar/hydrophobic,
|polar, |and |charged? |- |correct |answer |Non-polar/hydrophobic |- |end |with |CH |or |"can't
|have" |water. |Polar |- |end |with |OH, |SH, |or |NH. |Charged |- |end |with |a |charge
what |kinds |of |bonds |do |each |of |the |3 |different |types |of |side |chains |make? |- |correct
|answer ionic, |hydrophobic/non-polar, |charged
What |are |the |4 |levels |of |protein |structure? |- |correct |answer |Primary |- |linear |structure,
|Secondary |- |Folded |into |helix |or |pleated |sheet |caused |by |hydrogen |bonding, |tertiary
|- |3D |structure |caused |by |side |chain |interactions, |quaternary |- |1+ |amino |acid |chains
|combine |= |multiple |subunits |MUST |have |1+ |subunit
What |enviormental |change |breaks |each |type |of |bond? |- |correct |answer
|hydrophobic |- |temperature |change, |ionic |- |salt |or |decreased |pH, |hydrogen |-
|temperature, |change |in |pH, |disulfide |- |reducing |agents
what |type |of |amino |acid |side |chain |leads |to |protein |aggregration? |- |correct |answer
|hydrophobic |bonds
how |do |environmental |changes |affect |protein |folding? |- |correct |answer Extreme
|temp |can |cause |hydrogen |bonds |to |break |apart |= |malformation |of |protein |folding
how |do |mutations |affect |protein |structure? |- |correct |answer |Can |cause |structure |to
|change. |Protein |loses |form |= |loses |function. |May |form |a |different |protein.
What |is |an |electron? |- |correct |answer |Negatively |charged |atom |on |outer |ring |for
|bonding
What |is |energy: |- |correct |answer | Power |derived |fro |chemical |interaction
what |are |covalent |bonds? |- |correct |answer |chemical |bond, |atoms |share |1+ |valence
|electrons
what |is |an |ionic |bond? |- |correct |answer | bond |between |positive |and |negative
what |is |a |hydrogen |bond? |- |correct |answer |weak |bond |between |positive |and |negative
, WGU |C785 |FINAL |EXAM |2023 |(100% |CORRECT)
with |an |amino? |- |correct |answer | piece |of |amino |acid, |NH2 |or |NH3
what |is |a |carboyxl? |- |correct |answer | piece |of |amino |acid, |COO |or |COOH
What |is |hydrophobic? |- |correct |answer Doesn't |like |water, |end |with |CH
what |is |hydrophilic? |- |correct |answer | Water |loving, |end |with |OH, |NH, |or |SH
what |is |disulfide |bond? |- |correct |answer strongest |bond |between |reduction |agents,
|formed |between |SH's.
what |are |zwitterions? |- |correct |answer amino |with |positive |and |negative |charges |=
|overall |charge |of |zero
what |is |a |polypeptide |- |correct |answer | polymer |of |amino |acids
What |is |dehydration |synthesis? |- |correct |answer Process |of |forming |peptide |bonds
what |is |hydrolysis? |- |correct |answer | adding |water |to |destroy |bonds
what |is |an |alpha |helix? |- |correct |answer twisted |secondary |structure, |formed |by
|hydrogen |bonds
what |is |a |beta |sheet? |- |correct |answer folded |second |structure |shape, |formed |by
|hydrogen |bonds
what |is |denaturation? |- |correct |answer loss |of |shape |duet |o |interruption |of |chemical
|bonds; |occurs |via |extreme |salt, |temp, |pH
what |is |aggregation? |- |correct |answer |clumping |of |inner |or |outer |cellular |proteins
|caused |by |misfolded |proteins |leading |to |diseases |such |as |Alzheimers, |ALS,
|Parkinson's
how |do |enzymes |catalyze |reactions? |- |correct |answer |bind |with |substrates |to |decrease
|activation |energy |required |and |decrease |reaction |rate
how |do |enzymes |affect |reaction |rate |and |activation |energy? |- |correct |answer
|decrease |activation |energy |and |decrease |reaction |rate
what |are |the |4 |steps |of |the |enzymatic |cycle? |- |correct |answer enzyme |recognizes
|substrate, |substrate |attracts |the |enzyme; |enzyme-substrate |complex |is |formed;
|enzyme-product |complex |formed; |product |is |released, |enzyme |recycled
how |do |environmental |changes |affect |enzymes? |- |correct |answer |High |heat, |pH
|change, |high |salt |concentration, |and |reducing |agents |can |cause |an |enzyme |to |lose
|its |form/lose |function
what |is |a |competitive |inhibitor? |- |correct |answer Mimics |substrate |and |takes |its
|place |on |the |active |binding |site