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WGU C785 Exam Practice Questions and Answers

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  • WGU C785 Biochemistry
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  • WGU C785 Biochemistry

WGU C785 Exam Practice Questions and Answers What is the basic structure of an amino acid? What do they look like? - 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,...

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  • October 23, 2024
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  • 2024/2025
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  • WGU C785 Biochemistry
  • WGU C785 Biochemistry
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WGU C785 Exam Practice Questions
and Answers


What is the basic structure of an amino acid? What do they look like? - 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? -

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? - Ans:✔✔-ionic,

hydrophobic/non-polar, charged


What are the 4 levels of protein structure? - 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? - 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? - Ans:✔✔-hydrophobic bonds


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how do environmental changes affect protein folding? - Ans:✔✔-Extreme temp can cause hydrogen

bonds to break apart = malformation of protein folding


how do mutations affect protein structure? - Ans:✔✔-Can cause structure to change. Protein loses form

= loses function. May form a different protein.


What is an electron? - Ans:✔✔-Negatively charged atom on outer ring for bonding


What is energy: - Ans:✔✔-Power derived fro chemical interaction


what are covalent bonds? - Ans:✔✔-chemical bond, atoms share 1+ valence electrons


what is an ionic bond? - Ans:✔✔-bond between positive and negative


what is a hydrogen bond? - Ans:✔✔-weak bond between positive and negative


with an amino? - Ans:✔✔-piece of amino acid, NH2 or NH3


what is a carboyxl? - Ans:✔✔-piece of amino acid, COO or COOH


What is hydrophobic? - Ans:✔✔-Doesn't like water, end with CH


what is hydrophilic? - Ans:✔✔-Water Lovering, end with OH, NH, or SH


what is disulfide bond? - Ans:✔✔-strongest bond between reduction agents, formed between SH's.




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what are zwitterions? - Ans:✔✔-amino with positive and negative charges = overall charge of zero


what is a polypeptide - Ans:✔✔-polymer of amino acids


What is dehydration synthesis? - Ans:✔✔-Process of forming peptide bonds


what is hydrolysis? - Ans:✔✔-adding water to destroy bonds


what is an alpha helix? - Ans:✔✔-twisted secondary structure, formed by hydrogen bonds


what is a beta sheet? - Ans:✔✔-folded second structure shape, formed by hydrogen bonds


what is denaturation? - Ans:✔✔-loss of shape duet o interruption of chemical bonds; occurs via extreme

salt, temp, pH


what is aggregation? - Ans:✔✔-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? - Ans:✔✔-bind with substrates to decrease activation energy

required and decrease reaction rate


how do enzymes affect reaction rate and activation energy? - Ans:✔✔-decrease activation energy and

decrease reaction rate




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