UNE Biochemistry

University Of New England (UNE )

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UNE Biochem Midterm Questions With Complete Solutions
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9

juli 2023

2022/2023

A+
primary structure of protein correct answer: linear sequence of amino acids in the polypeptide chain secondary structure of protein correct answer: alpha helix and beta pleated sheet alpha helix correct answer: formed when the carbonyl group of peptide bond forms a hydrogen bond with the amide nitrogen of another peptide 4 aa down the chain; proline is not commonly found among these structures beta sheets correct answer: can be parallel or antiparallel peptide chains forming rows or...
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UNE biochemistry midterm review questions and answers with complete solutions
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16

juli 2023

2022/2023

A+
Under low energy conditions, AMP will bind to phosphofructokinase I and glycogen phosphorylase at site unique to the active site. This enhances the activity of these enzymes. This is an example of which of the follow types of enzyme regulation? correct answer: Allosteric activation An example of enzyme activation by cleavage is best illustrated by which of the following? correct answer: Activation of chymotrypsinogen to chymotrypsin Children with cystinosis have growth delay and both ren...
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UNE Biochemistry Midterm Study (Questions from weekly evaluations) With Complete Solutions
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15

juli 2023

2022/2023

A+
A 19-year-old boy is diagnosed with Creutzfeldt-Jakob disease which is caused by the introduction of an amyloid fold in the disease-causing protein. The introduction of this fold causes the protein to transition from a primarily alpha helical structure to an aggregate of mostly beta sheets. This change in protein structure (leading to disease) is best attributed to changes in which of the following? correct answer: folding of the secondary structures Which of the following is the best descri...
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UNE Biochem MIDTERM Questions With Complete Solutions
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13

juli 2023

2022/2023

A+
α-helices and β-sheets are primarily stabilized by which of the following interactions? correct answer: hydrogen bonding Domains are common structural elements that retain a particular function within the protein. Which of the following is an example of a protein domain? correct answer: An arrangement of β-strands connected by α-helices (βαβαβ) How do most enzymes reduce the activation energy needed to move a reaction forward? correct answer: Providing an active site most compl...
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UNE Medical Biochemistry Midterm Questions With Complete Solutions
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14

juli 2023

2022/2023

A+
Which of the following proteins is likely to have quaternary structure? correct answer: 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? correct answer: Pyridoxal phosphate Which of t...
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UNE Medical Biochemistry Midterm Review| 88 Questions| With Complete Solutions
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15

juli 2023

2022/2023

A+
A family presents for genetic counseling. The couple has two female children who are alive and well; however, their infant son recently died in the nursery with severe hemolysis (lysis of red blood cells) and jaundice. The wife recalls she lost a brother in infancy with severe hemolysis, induced after a viral infection. The physician suspects a glucose-6-phosphate dehydrogenase deficiency, this would result in a deficiency in which of the following compounds in red blood cells? correct answer: ...
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UNE Biochemistry Midterm| 140 Questions| With Complete Solutions
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24

juli 2023

2022/2023

A+
How do most enzymes reduce the activation energy needed to move a reaction forward? correct answer: Providing an active site most complementary the transition state An enzyme has a mutation within the substrate binding of the coenzyme needed for covalent catalysis. Which of the following is likely to result as a consequence of this mutation? correct answer: The enzyme will not be able to form the transition state complex Hemoglobin has the ability to display cooperative binding while myo...
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UNE Biochemistry Midterm Study Bank Questions With Complete Solutions
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35

juli 2023

2022/2023

A+
Succinate is a substrate for which complex in the electron transport chain? a.) Complex 1 (NADH-1 oxidoreductase) b.) Complex IV (Cyt c oxidase) c.) Complex V (ATP synthase) d.) complex II (Succinate-Q reductase) correct answer: Complex II (succinate-Q reductase) (D) Which of the following would be consistent with an exergonic reaction? a.) ∆S would be negative b.) ∆G would be negative c.) ∆S would be positive d.)∆G would be positive correct answer: ∆G woul...
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