WGU C785 derailed Questions and
programmed Answers
,What is the basic structure of an amino acid? What do they look like? - CORRECT ANS: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 ANS: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 ANS:ionic,
hydrophobic/non-polar, charged
What are the 4 levels of protein structure? - CORRECT ANS: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 ANS: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 ANS:hydrophobic bonds
how do environmental changes affect protein folding? - CORRECT ANS:Extreme temp can cause
hydrogen bonds to break apart = malformation of protein folding
how do mutations affect protein structure? - CORRECT ANS:Can cause structure to change. Protein loses
form = loses function. May form a different protein.
What is an electron? - CORRECT ANS:Negatively charged atom on outer ring for bonding
What is energy: - CORRECT ANS:Power derived fro chemical interaction
, what are covalent bonds? - CORRECT ANS:chemical bond, atoms share 1+ valence electrons
what is an ionic bond? - CORRECT ANS:bond between positive and negative
what is a hydrogen bond? - CORRECT ANS:weak bond between positive and negative
with an amino? - CORRECT ANS:piece of amino acid, NH2 or NH3
what is a carboyxl? - CORRECT ANS:piece of amino acid, COO or COOH
What is hydrophobic? - CORRECT ANS:Doesn't like water, end with CH
what is hydrophilic? - CORRECT ANS:Water Lovering, end with OH, NH, or SH
what is disulfide bond? - CORRECT ANS:strongest bond between reduction agents, formed between
SH's.
what are zwitterions? - CORRECT ANS:amino with positive and negative charges = overall charge of zero
what is a polypeptide - CORRECT ANS:polymer of amino acids
What is dehydration synthesis? - CORRECT ANS:Process of forming peptide bonds
what is hydrolysis? - CORRECT ANS:adding water to destroy bonds
what is an alpha helix? - CORRECT ANS:twisted secondary structure, formed by hydrogen bonds
programmed Answers
,What is the basic structure of an amino acid? What do they look like? - CORRECT ANS: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 ANS: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 ANS:ionic,
hydrophobic/non-polar, charged
What are the 4 levels of protein structure? - CORRECT ANS: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 ANS: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 ANS:hydrophobic bonds
how do environmental changes affect protein folding? - CORRECT ANS:Extreme temp can cause
hydrogen bonds to break apart = malformation of protein folding
how do mutations affect protein structure? - CORRECT ANS:Can cause structure to change. Protein loses
form = loses function. May form a different protein.
What is an electron? - CORRECT ANS:Negatively charged atom on outer ring for bonding
What is energy: - CORRECT ANS:Power derived fro chemical interaction
, what are covalent bonds? - CORRECT ANS:chemical bond, atoms share 1+ valence electrons
what is an ionic bond? - CORRECT ANS:bond between positive and negative
what is a hydrogen bond? - CORRECT ANS:weak bond between positive and negative
with an amino? - CORRECT ANS:piece of amino acid, NH2 or NH3
what is a carboyxl? - CORRECT ANS:piece of amino acid, COO or COOH
What is hydrophobic? - CORRECT ANS:Doesn't like water, end with CH
what is hydrophilic? - CORRECT ANS:Water Lovering, end with OH, NH, or SH
what is disulfide bond? - CORRECT ANS:strongest bond between reduction agents, formed between
SH's.
what are zwitterions? - CORRECT ANS:amino with positive and negative charges = overall charge of zero
what is a polypeptide - CORRECT ANS:polymer of amino acids
What is dehydration synthesis? - CORRECT ANS:Process of forming peptide bonds
what is hydrolysis? - CORRECT ANS:adding water to destroy bonds
what is an alpha helix? - CORRECT ANS:twisted secondary structure, formed by hydrogen bonds
