bio 2 protein Quiz
18 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary site where Type I oxidative deamination occurs?

  • Liver & Kidney (Mitochondria) (correct)
  • Heart
  • Liver & Kidney (Peroxisomes)
  • Brain

Which molecule is produced as a result of Type I oxidative deamination of Glutamate?

  • NADH
  • Ammonia
  • NADPH
  • -ketoglutarate (correct)

How is L-Glutamate dehydrogenase regulated in terms of energy levels?

  • Activated by high levels of glucose
  • Allosterically inhibited by low energy (ADP) (correct)
  • Inhibited by high levels of ammonia
  • Allosterically activated by high energy (GTP)

What drives the reaction towards Glutamate synthesis in Type I oxidative deamination?

<p>High ammonia levels (B)</p> Signup and view all the answers

Which amino acid undergoes rapid oxidative deamination due to its central role in nitrogen metabolism?

<p>Glutamate (D)</p> Signup and view all the answers

What type of reaction is Type II oxidative deamination, in terms of reversibility?

<p>Irreversible reaction (A)</p> Signup and view all the answers

What is the function of mitochondrial glutamine synthetase in the body?

<p>To synthesize glutamine by combining ammonia with glutamate (B)</p> Signup and view all the answers

Which enzyme releases ammonia from glutamine in the mitochondria?

<p>Glutaminase (C)</p> Signup and view all the answers

What role does liver-type glutaminase play in response to high protein intake?

<p>Converts ammonia to urea in the liver (B)</p> Signup and view all the answers

How is glutamine synthesized in the process involving ATP and ADP?

<p>By phosphorylating glutamate with ATP (C)</p> Signup and view all the answers

What outcome results from a rare deficiency in neonate glutamine synthetase?

<p>Multi-organ failure (C)</p> Signup and view all the answers

Which enzyme is analogized to glutaminase for a similar reaction catalyzed by L-Asparaginase?

<p>L-Asparaginase (B)</p> Signup and view all the answers

What is the process of removal of an amino group in the form of free ammonia known as?

<p>Deamination (A)</p> Signup and view all the answers

Which type of deamination involves oxidation by removal of hydrogen?

<p>Oxidative deamination (C)</p> Signup and view all the answers

Which enzyme catalyzes Type I Oxidative Deamination using glutamate as a substrate?

<p>Glutamate Dehydrogenase (B)</p> Signup and view all the answers

In Type I Oxidative Deamination, what coenzyme can Glutamate Dehydrogenase use for the deamination reaction?

<p>NAD+ or NADPH (A)</p> Signup and view all the answers

What is the source of nitrogen in hepatic urea synthesis provided by the process of deamination?

<p>-Amino group in the form of free ammonia (A)</p> Signup and view all the answers

Why is NAD+ used in oxidative deamination and NADPH used in reductive amination?

<p>NAD+ promotes oxidation reactions, while NADPH promotes reduction reactions. (D)</p> Signup and view all the answers

More Like This

Biochemistry Amino Acid Metabolism Quiz
45 questions
Biochemistry Chapter: Amino Acid Metabolism
45 questions
Use Quizgecko on...
Browser
Browser