WGU C785 Final Exam Q&A Latest Version 2023/24

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2023/24

,WGU C785 FINAL EXAM 2023 (100% CORRECT)



WGU C785 FINAL EXAM 2023 (100% CORRECT)
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What is the basic structure of an amino acid? What do they look like? - correct
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answer amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon
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(C), and variable group
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How do you identify the 3 different types of side chains: non-polar/hydrophobic,
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polar, and charged? - correct answer Non-polar/hydrophobic - end with CH or
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"can't have" water. Polar - end with OH, SH, or NH. Charged - end with a charge
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what kinds of bonds do each of the 3 different types of side chains make? - correct
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answer ionic, hydrophobic/non-polar, charged
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What are the 4 levels of protein structure? - correct answer Primary - linear
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structure, Secondary - Folded into helix or pleated sheet caused by hydrogen
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bonding, tertiary - 3D structure caused by side chain interactions, quaternary - 1+
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amino acid chains combine = multiple subunits MUST have 1+ subunit
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What enviormental change breaks each type of bond? - correct answer
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hydrophobic - temperature change, ionic - salt or decreased pH, hydrogen -
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temperature, change in pH, disulfide - reducing agents
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what type of amino acid side chain leads to protein aggregration? - correct answer
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hydrophobic bonds
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how do environmental changes affect protein folding? - correct answer Extreme
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temp can cause hydrogen bonds to break apart = malformation of protein
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folding
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how do mutations affect protein structure? - correct answer Can cause structure to
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change. Protein loses form = loses function. May form a different protein.
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What is an electron? - correct answer Negatively charged atom on outer ring for
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bonding
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What is energy: - correct answer Power derived fro chemical interaction
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what are covalent bonds? - correct answer chemical bond, atoms share 1+ valence
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electrons
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what is an ionic bond? - correct answer bond between positive and negative
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what is a hydrogen bond? - correct answer weak bond between positive and
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negative
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, WGU C785 FINAL EXAM 2023 (100% CORRECT)


with an amino? - correct answer piece of amino acid, NH2 or NH3
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what is a carboyxl? - correct answer piece of amino acid, COO or COOH
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What is hydrophobic? - correct answer
v v v v v Doesn't like water, end with CH v v v v v




what is hydrophilic? - correct answer Water loving, end with OH, NH, or SH
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what is disulfide bond? - correct answer strongest bond between reduction agents,
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formed between SH's.
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what are zwitterions? - correct answer amino with positive and negative charges =
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overall charge of zero
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what is a polypeptide - correct answer polymer of amino acids
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What is dehydration synthesis? - correct answer
v v v v v v Process of forming peptide bonds v v v v




what is hydrolysis? - correct answer adding water to destroy bonds
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what is an alpha helix? - correct answer twisted secondary structure, formed by
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hydrogen bonds
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what is a beta sheet? - correct answer folded second structure shape, formed by
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hydrogen bonds
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what is denaturation? - correct answer loss of shape duet o interruption of chemical
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bonds; occurs via extreme salt, temp, pH
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what is aggregation? - correct answer clumping of inner or outer cellular proteins
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caused by misfolded proteins leading to diseases such as Alzheimers, ALS,
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Parkinson's
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how do enzymes catalyze reactions? - correct answer bind with substrates to
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decrease activation energy required and decrease reaction rate
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how do enzymes affect reaction rate and activation energy? - correct answer
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decrease activation energy and decrease reaction rate
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what are the 4 steps of the enzymatic cycle? - correct answer enzyme recognizes
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substrate, substrate attracts the enzyme; enzyme-substrate complex is formed;
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enzyme-product complex formed; product is released, enzyme recycled
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how do environmental changes affect enzymes? - correct answer High heat, pH
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change, high salt concentration, and reducing agents can cause an enzyme to lose
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its form/lose function
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what is a competitive inhibitor? - correct answer Mimics substrate and takes its
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place on the active binding site
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