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Biochem Murphy - Exam 2 2024/2025 QUESTIONS WITH COMPLETED & VERIFIED SOLUTIONS.
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Biochem Murphy - Exam 2 2024/2025 QUESTIONS WITH COMPLETED & VERIFIED SOLUTIONS.
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Biochem Murphy - Exam 2 Sp 22The blood group antigens, type O, type A and type B, can be linked to protein through which of
the following amino acids?
a. N
b. T
c. Q
d. V
e. None of the above
b. T
Which of the following amino acids is capable of forming a O-linked glycoprotein (protein with a
sugar linked to it)?
a. T
b. N
c. Q
d. V
e. None of the above
a. T
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The bond that attaches an O-linked glycan's protein to the sugar is called
a. A carbonyl linkage
b. An amide linkage
c. A glycosidic linkage
d. A disulfide linkage
e. None of the above
c. A glycosidic linkage
An important role of glycosylation of proteins in the body is
a. To create a diversity of structural possibilities
b. Make proteins taste better
c. To facilitate extracellular recognition
d. Both A and C are correct
,e. All of the above are correct
d. Both A and C are correct
Fructose 1,6 bisphosphate is a substrate in which of the following processes?
a. Gluconeogenesis
b. Glycolysis
c. Photosynthesis
d. Glycogenolysis
e. Both A and B are correct
e. Both A and B are correct
The bifunctional enzyme, PFK-2 would have which of it's domains active in response to insulin?
a. The protein phosphatase domain
b. The kinase domain
c. The ATP binding domain
d. The redox domain
e. All of the above are correct
b. The kinase domain
Which of the following molecules will result in the most ATP generation (considering that you
have oxygen available and only one molecule of each of the below choices).
a. Coenzyme QH2
b. FADH2
c. Acetyl-Coenzyme A
d. Cytochrome C
e. NADH
c. Acetyl-Coenzyme A
Evidence supporting the chemiosmotic theory includes all of the following except
a. Inhibitors of ATP synthesis have been shown to dissipate the proton gradient
b. Mitochondria with disrupted membranes cannot synthesize ATP
c. ATP synthesis is depressed when mitochondrial swelling occurs as a result of osmotic
changes
d. The pH of a weakly buffered suspension of mitochondria rises when O2 added
e. Actively respiring mitochondria expel protons
d. The pH of a weakly buffered suspension of mitochondria rises when O2 added
, The rap video example that I showed in class as an exqample of how students can learn
through the arts was about ____.
a. Amino acids
b. Protein degradation
c. Energy production
d. DNA replication
e. pH
c. Energy production
What effect would inhibition of complex 1 of the elctron transport chain have on the regulation of
pyruvate dehydrogenase (PDH) complex?
a. The increase in FADH2 would cause the E3 portion of PDH to stop
b. The decrease of ATP would increase PDH activity
c. The increase of acetyl CoA would increase PDH activity
d. The increase in NADH would decrease PDH activity
e. None of the above
b. The decrease of ATP would increase PDH activity
What target does the molecule Fructose 2,6 bisphosphate allosterically regulate?
a. Hexokinase
b. PFK-1
c. Pyruvate kinase
d. Both A and C are correct
e. All of the above are correct
b. PFK-1
Which of the following enzymes will catalyze a committed step in glycolysis?
a. Phosphofructoisomerase
b. Aldolase
c. Triose phosphate isomerase
d. Phosphofructokinase 1
e. Phosphoglucooisomerase
d. Phosphofructokinase 1
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