UNE Medical Biochemistry Midterm
Exam Questions and Answers 100%
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Which of the following proteins is likely to have quaternary structure? -
✔✔A multimeric protein that contains multiple peptide chains
Prosthetic groups are complex nonprotein molecules that participate in
catalysis by providing functional groups that form a covalent intermediate
between the enzyme and the substrate. Which of the following is an
example of a coenzyme or cofactor that participates in a covalent catalysis
reaction? - ✔✔Pyridoxal phosphate
Which of the following best describes a protein domain? - ✔✔A section of a
protein structure sufficient to perform a particular chemical or physical task
Cleavage of fructose 1,6 bisphosphate to dihydroxyacetone and
Glyceraldehyde 3-phosphate involves the breaking of a carbon-carbon
bond through a process other than oxidation or hydrolysis. This is achieved
by what class of enzymes? - ✔✔Lyase
, A 55-year old man is brought to the emergency room with a chief complaint
of chest pain and tingling in his left arm. Elevation of which of the following
enzymes in circulation would be most indicative of myocardial infarction? -
✔✔Troponin
Allosteric activators of hemoglobin will increase substrate binding through
which of the following mechanisms? - ✔✔Binding the protein, and keeping
it in the "R" conformation
Which of the following best describes tertiary structure? - ✔✔Interactions
between alpha helices and beta sheets to form a domain
How do most enzymes reduce the activation energy needed to move a
reaction forward? - ✔✔providing an active site most complementary to the
transition state
Domains are common structural elements that retain a particular function
within the protein. Which of the following is an example of a protein
domain? - ✔✔An arrangement of beta-strands connected by alpha-helices
(beta-alpha-beta-alpha)
Which amino acid would not be commonly found in the middle of an alpha-
helical domain? - ✔✔Proline
Exam Questions and Answers 100%
Pass
Which of the following proteins is likely to have quaternary structure? -
✔✔A multimeric protein that contains multiple peptide chains
Prosthetic groups are complex nonprotein molecules that participate in
catalysis by providing functional groups that form a covalent intermediate
between the enzyme and the substrate. Which of the following is an
example of a coenzyme or cofactor that participates in a covalent catalysis
reaction? - ✔✔Pyridoxal phosphate
Which of the following best describes a protein domain? - ✔✔A section of a
protein structure sufficient to perform a particular chemical or physical task
Cleavage of fructose 1,6 bisphosphate to dihydroxyacetone and
Glyceraldehyde 3-phosphate involves the breaking of a carbon-carbon
bond through a process other than oxidation or hydrolysis. This is achieved
by what class of enzymes? - ✔✔Lyase
, A 55-year old man is brought to the emergency room with a chief complaint
of chest pain and tingling in his left arm. Elevation of which of the following
enzymes in circulation would be most indicative of myocardial infarction? -
✔✔Troponin
Allosteric activators of hemoglobin will increase substrate binding through
which of the following mechanisms? - ✔✔Binding the protein, and keeping
it in the "R" conformation
Which of the following best describes tertiary structure? - ✔✔Interactions
between alpha helices and beta sheets to form a domain
How do most enzymes reduce the activation energy needed to move a
reaction forward? - ✔✔providing an active site most complementary to the
transition state
Domains are common structural elements that retain a particular function
within the protein. Which of the following is an example of a protein
domain? - ✔✔An arrangement of beta-strands connected by alpha-helices
(beta-alpha-beta-alpha)
Which amino acid would not be commonly found in the middle of an alpha-
helical domain? - ✔✔Proline
