WGU C785 COMPREHENSIVE FINAL
PAPER FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ Secondary, tertiary, and quaternary levels of protein structure
can all be impacted by exposing a protein to which treatment?
Change of a hydrophobic amino acid to a different hydrophobic
amino acid
Addition of a reducing agent
Placement of the protein in a solution with a low pH
Increase in the concentration of the protein in solution
Answer: Placement of the protein in a solution with a low pH
Changes in pH affect hydrogen bonds and ionic bonds. Hydrogen
bonds in the backbone of amino acids occur in secondary
structure, and both hydrogen bonds and ionic bonds occur in the
side chains of amino acids in tertiary structure.
,◉ An increase in beta-pleated sheet structure in some brain
proteins can lead to an increase in amyloid deposit formation,
characteristic of some neurodegenerative diseases. What is the
primary biochemical process that follows the increase in beta-
pleated sheet structure that leads to the development of the
amyloid deposits?
An increase in glycogen formation in the brain cells
Aggregation of the proteins in the brain
Secretion of glucagon, leading to excessive ketogenesis
An increase in anaerobic metabolism of glucose in the brain
Answer: Aggregation of the proteins in the brain
This question is describing changes in protein structure.
Aggregation occurs when proteins clump together
inappropriately, causing plaques like amyloid deposits to
accumulate.
◉ Which level of protein structure is determined by the sequence
of amino acids?
Secondary structure
,Quaternary structure
Tertiary structure
Primary structure
Answer: Primary structure
The primary structure of a protein is simply the sequence of
amino acids held together by peptide bonds.
◉ Which force is most influential in determining the secondary
structure of a protein?
Hydrophobic effect
Disulfide bonding
Hydrogen bonding
Electrostatic interactions
Answer: Hydrogen bonding
, The secondary structure of a protein is built by hydrogen bonds
between the carboxyl groups and amino groups on the backbones
of the amino acids.
◉ Which amino acid would most likely participate in hydrogen
bonds?
Answer: Amino Acid structure 4
This is a polar, uncharged amino acid due to the OH group on the
side chain. Polar, uncharged amino acids containing oxygen or NH
groups make hydrogen bonds.
◉ Which portion of the amino acid is inside the box?
The box is surrounding the section below the Alpha Carbon
Answer: Side Chain
The side chain is the variable group of the amino acid, also called
the R group. Every amino acid has the same amino group,
carboxylic acid group, and an alpha carbon, but the side chain is
different.
◉ Which pair of amino acids will most likely interact through
hydrophobic forces between their side chains?
Answer: Both of these amino acids are non-polar and therefore
can interact together with a hydrophobic interaction. Please note
PAPER FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ Secondary, tertiary, and quaternary levels of protein structure
can all be impacted by exposing a protein to which treatment?
Change of a hydrophobic amino acid to a different hydrophobic
amino acid
Addition of a reducing agent
Placement of the protein in a solution with a low pH
Increase in the concentration of the protein in solution
Answer: Placement of the protein in a solution with a low pH
Changes in pH affect hydrogen bonds and ionic bonds. Hydrogen
bonds in the backbone of amino acids occur in secondary
structure, and both hydrogen bonds and ionic bonds occur in the
side chains of amino acids in tertiary structure.
,◉ An increase in beta-pleated sheet structure in some brain
proteins can lead to an increase in amyloid deposit formation,
characteristic of some neurodegenerative diseases. What is the
primary biochemical process that follows the increase in beta-
pleated sheet structure that leads to the development of the
amyloid deposits?
An increase in glycogen formation in the brain cells
Aggregation of the proteins in the brain
Secretion of glucagon, leading to excessive ketogenesis
An increase in anaerobic metabolism of glucose in the brain
Answer: Aggregation of the proteins in the brain
This question is describing changes in protein structure.
Aggregation occurs when proteins clump together
inappropriately, causing plaques like amyloid deposits to
accumulate.
◉ Which level of protein structure is determined by the sequence
of amino acids?
Secondary structure
,Quaternary structure
Tertiary structure
Primary structure
Answer: Primary structure
The primary structure of a protein is simply the sequence of
amino acids held together by peptide bonds.
◉ Which force is most influential in determining the secondary
structure of a protein?
Hydrophobic effect
Disulfide bonding
Hydrogen bonding
Electrostatic interactions
Answer: Hydrogen bonding
, The secondary structure of a protein is built by hydrogen bonds
between the carboxyl groups and amino groups on the backbones
of the amino acids.
◉ Which amino acid would most likely participate in hydrogen
bonds?
Answer: Amino Acid structure 4
This is a polar, uncharged amino acid due to the OH group on the
side chain. Polar, uncharged amino acids containing oxygen or NH
groups make hydrogen bonds.
◉ Which portion of the amino acid is inside the box?
The box is surrounding the section below the Alpha Carbon
Answer: Side Chain
The side chain is the variable group of the amino acid, also called
the R group. Every amino acid has the same amino group,
carboxylic acid group, and an alpha carbon, but the side chain is
different.
◉ Which pair of amino acids will most likely interact through
hydrophobic forces between their side chains?
Answer: Both of these amino acids are non-polar and therefore
can interact together with a hydrophobic interaction. Please note
