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UNE biochem Unit 4 exam Questions and Answers 100% Pass

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  • Module
  • UNE Biochemistry
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  • UNE Biochemistry

UNE biochem Unit 4 exam Questions and Answers 100% Pass Ubiquitination is a means of targeting a protein for which of the following cellular processes? - Proteasomal degradation The reaction of ammonia with a-ketoglutarate is catalyzed by_______ and requires ________ as a reactant? - Glutamate...

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  • January 8, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • UNE Biochemistry
  • UNE Biochemistry
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UNE biochem Unit 4 exam
Questions and Answers 100% Pass

Ubiquitination is a means of targeting a protein for which of the following cellular processes? -

✔✔Proteasomal degradation


The reaction of ammonia with a-ketoglutarate is catalyzed by_______ and requires ________ as a

reactant? - ✔✔Glutamate dehydrogenase; NADH or NADPH


Most enzymes involved in a protein digestion require cleavage for activation. These proteins are secreted

as inactive protein forms called: - ✔✔Zymogens


The urea cycle takes place in which of the following sub cellular locations? - ✔✔the cytosol and

mitochondria


Which of the following amino acids is considered non essential because its generated by the urea cycle? -

✔✔arginine


Which of the following enzymes is regulated by N-acteyl glutamate (NAGs)? - ✔✔CPS I


Which of the following enzymes is correctly paired with its activator? - ✔✔N-acetylglutamate synthase;

arginine


Which of the following enzymes will be active in both the fed and fasted state? - ✔✔Glutaminase


Which of the following compounds stimulates the synthesis of N-acetylglutamate? - ✔✔arginine




EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1

, Which of the following statements is consistent with nitrogen transport in the fasted state -

✔✔Glutaminase will be active


Which of the following is the primary role of glutaminase in the liver? - ✔✔to free an amine group from

glutamine


in the case of urea cycle deficiency, which of the following amino acids may become essential? -

✔✔arginine


When is the process of autophage most likely occurring in the cell? - ✔✔When there is low energy in the

cell; ratio of AMP/ATP >1


Unlike many of the other metabolic pathways, the urea cycle can be active under which of the following

conditions? - ✔✔Both the fed and fasted state


Pepsinogen is activated by which of the following mechanisms or enzymes? - ✔✔A change in pH

catalyzes the activation of pepsinogen to pepsin


The process of autophagy is defined as which of the following processes? - ✔✔Recycling of proteins

under conditions of cellular need or starvation


Which of the following enzymes is the regulatory step in the urea cycle? - ✔✔Carbamoyl phosphate

synthetase (CPSI)


The pancreatic zymogen trypsinogen is activated by which of the following enzymes or compounds? -

✔✔Enteropeptidase


Alanine can be shuttled from the skeletal muscle to the liver where it is deaminated by which of the

following enzymes? - ✔✔Alanine aminotransferase


The primary role of glutamine in the brain is to provide substrate for the synthesis of which of the

following compounds? - ✔✔Neurotransmitters




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