Bio-Chem C785 Study Guide PA All exam revision questions and Verified answers. Latest 2024 Update.
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Course
Biochemistry
Institution
Biochemistry
Bio-Chem C785 Study Guide PA All exam revision questions and Verified answers. Latest 2024 Update. The Latest Revision Questions and correct answers. Latest 2024 Update. Verified and Graded A+.
Bio-Chem C785 Study Guide PA
What portion of the amino acid is located inside the red box? - Carboxyl group
Which of the following pairs of amino acids would form a hydrophobic interaction? -
Option 1-both of the amino acids are hydrophobic (their side-chains end with -CH2).
Which level of protein structure is composed only of peptide bonds? - Primary
The protein alpha-synuclein contains two cysteine amino acids at positions 38 and 112, which
form a disulfide bond with each other. Which level of protein structure does this disulfide
bond help to stabilize? - Tertiary
The secondary level of protein structure is stabilized by which of the following? -
Hydrogen bonds between carboxyl and amino groups in the backbone of the protein
An inborn error of metabolism is caused when a metabolic enzyme, which normally contains
an Asparagine at position 115, is mutated to Valine. Which amino acid below can replace
Valine to restore the function of the metabolic enzyme? - Option 2-This amino acid R
group of glutamine is similar in structure to asparagine and would be expected to restore the
function of the enzyme.
Which statement describes a disease state caused by altered protein structure? - A
mutation in cyclin-dependent kinase results in cancer
An elderly patient is diagnosed with Alzheimer's Disease. Which of the following is most
likely the cause this neurological disorder? - Aggregation of hydrophobic amino acids
When a protein is denatured by heat, which of the following tertiary structure
interactions/bonds is affected most? - Hydrophobic Interactions
A toddler decides to have fun by pouring a bottle of lemon juice into your glass of milk. The
lemon juice is significantly more acidic than the milk. Which interactions in the protein(s) of
the milk will be disrupted? Select all that apply. - Hydrogen bonds
Ionic bonds
In a common form of protein characterization known as gel electrophoresis, proteins are
completely denatured before analysis. A reducing agent called dithiothreitol is often added
, during sample preparation. Which interaction(s) in the proteins of a sample will be disrupted
by dithiothreitol? - Disulfide bonds
Which of the following will be the most likely to be unaffected by protein denaturation? -
The sequence of amino acids in trypsin
Which of the following statements is true? - Hemoglobin at pH 7.2 has a lower affinity
for oxygen than hemoglobin at pH 7.6.
Which one of these statements about the similarities between hemoglobin and myoglobin is
true? - Both hemoglobin and myoglobin have similar secondary and tertiary structures.
In which of the following situations would the planar conformation of the heme group of
hemoglobin be favored? - When the H+/proton concentration is low and hemoglobin is
in the R-state.
Which of the following best describe the property of 'cooperativity'? - O2 binding to
hemoglobin and changing the shape of other heme groups in the protein
Which situation would induce the T state of hemoglobin? * - High blood CO2 levels
after working out.
Using the graph below, which of the following is true? * - Low concentration of CO2
and low concentration of H+/protons will shift the curve to the left.
Which of the following is NOT carried by hemoglobin in the blood stream? - CO2
In the following enzyme pathway, assume that Enzyme 2 is inhibited. Which of the
compounds will begin to accumulate as a result of this inhibition? - A- Enzyme 2
In the following pathway, the red line with a T at the end represents inhibition. In this
pathway, which of the following would occur? (Select all that apply) - As the levels of
E increase, the levels of D decrease.
If enzyme 2 is inhibited, the levels of B will build up.
If enzyme 1 is inhibited, the levels of B will decrease.
Drug X is used to treat LUTSS (Leaving Up Toilet Seat Syndrome) in men. The drug is
extremely expensive to make, but fortunately is required only in small doses, since it works
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