Formation of Carbamoyl Phosphate in Mitochondria Quiz
30 Questions
0 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

In which part of the cell is carbamoyl phosphate generated?

  • Golgi apparatus
  • Mitochondria (correct)
  • Endoplasmic reticulum
  • Cytosol

What is the role of ornithine carbamoyl transferase?

  • To transfer the carbamoyl group to ornithine (correct)
  • To catalyze the urea cycle
  • To generate carbamoyl phosphate
  • To break down citrulline

What is the byproduct of the reaction catalyzed by carbamoyl phosphate synthetase I?

  • Pi
  • ADP
  • CO2
  • ATP (correct)

What is the end product of the reaction catalyzed by ornithine carbamoyl transferase?

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

Where does ornithine come from before entering the mitochondria?

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

What is the nature of the reaction catalyzed by carbamoyl phosphate synthetase I?

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

What is the result of the deficiency of homogentsatic oxygenase?

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

What is the effect of lack of melanin in albinos?

<p>Increased sensitivity to sunlight (D)</p> Signup and view all the answers

What is the age group most affected by Parkinson's disease?

<p>People over 60 years old (D)</p> Signup and view all the answers

What is the result of the deficiency of p-OH phenyl pyruvate oxygenase/ hydroxylase?

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

What is the effect of the lack of pigment in the eye in albinos?

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

What is the result of the oxidation of homogentisate?

<p>Formation of a dark pigment (D)</p> Signup and view all the answers

What is the primary reason behind the abnormal development of the foetus in pregnant women with high phenylalanine levels?

<p>Accumulation of phenylalanine (D)</p> Signup and view all the answers

What effect can dietary control of phenylalanine levels have on preventing mental retardation?

<p>Prevents mental retardation (D)</p> Signup and view all the answers

In the context of phenylalanine accumulation, what might happen to the transport of other amino acids to the brain?

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

Which amino acid disorder is specifically linked with poor psychomotor maturation, hypopigmentation, and seizures?

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

What is the key role of tyrosine transaminase deficiency in tyrosinaemia?

<p>Causes excessive accumulation of tyrosine and its metabolites (C)</p> Signup and view all the answers

What is the shared clinical manifestation between tyrosinaemia and phenylketonuria?

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

What is the enzyme responsible for catalyzing the synthesis of citrulline in the mitochondria?

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

Which molecule provides the second amino group needed for the formation of urea?

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

What from ATP is cleaved during the condensation of aspartate and citrulline to form arginino succinate?

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

Which of the following is formed during the hydrolysis of PPi by pyrophosphatase?

<p>Inorganic phosphate (B)</p> Signup and view all the answers

What is the final product from the condensation of aspartate and citrulline?

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

What is the driving factor for the condensation of aspartate and citrulline in the formation of arginino succinate?

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

Which enzyme is deficient in Maple Syrup Urine Disease?

<p>α-keto acid dehydrogenase (A)</p> Signup and view all the answers

What is the primary cause of brain dysfunction in Maple Syrup Disease?

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

Which amino acids are affected in Maple Syrup Urine Disease?

<p>Leucine, Isoleucine, Valine (A)</p> Signup and view all the answers

What symptoms might be observed in an individual with Maple Syrup Disease?

<p>Lethargy, Hypoglycemia, Convulsions (C)</p> Signup and view all the answers

What is found in the urine of individuals with Maple Syrup Urine Disease that contributes to its distinct odor?

<p>α-ketoisocaproic acid (C)</p> Signup and view all the answers

Which enzyme is affected in Isovaleric Acidemia?

<p>Isovaleryl-CoA dehydrogenase (B)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser