Podcast
Questions and Answers
What is the primary role of transamination in amino acid metabolism?
What is the primary role of transamination in amino acid metabolism?
- It is the sole mechanism for catabolism of all amino acids.
- It is responsible for the synthesis of all essential amino acids.
- It facilitates the conversion of one amino acid to another by transferring an amino group. (correct)
- It is the initial step in the deamination process for all amino acids.
Which of the following statements about the enzyme glutamate dehydrogenase is correct?
Which of the following statements about the enzyme glutamate dehydrogenase is correct?
- It is responsible for the transamination of glutamate and pyruvate.
- It is involved in the oxidative deamination of glutamate, liberating ammonia. (correct)
- It catalyzes the non-oxidative deamination of glutamate.
- It is a PLP-dependent enzyme involved in the deamination of serine and threonine.
Which of the following statements about the role of transamination in amino acid metabolism is incorrect?
Which of the following statements about the role of transamination in amino acid metabolism is incorrect?
- It produces substrates for gluconeogenesis.
- It is the first step in the catabolism of amino acids.
- It is involved in the synthesis of essential amino acids. (correct)
- It facilitates the synthesis of non-essential amino acids.
Which of the following enzymes is responsible for the deamination of serine, threonine, and homoserine?
Which of the following enzymes is responsible for the deamination of serine, threonine, and homoserine?
What is the significance of glutamate acting as a 'collection center' for amino groups from other amino acids?
What is the significance of glutamate acting as a 'collection center' for amino groups from other amino acids?
Which of the following enzymes is responsible for the deamination of histidine?
Which of the following enzymes is responsible for the deamination of histidine?
What is the main pathway by which the body can get rid of ammonia?
What is the main pathway by which the body can get rid of ammonia?
Where does the urea biosynthesis occur?
Where does the urea biosynthesis occur?
What is the source of the two nitrogen atoms in urea?
What is the source of the two nitrogen atoms in urea?
Which of the following is a source of ammonia in the body?
Which of the following is a source of ammonia in the body?
What is the significance of the urea cycle?
What is the significance of the urea cycle?
How is the ammonia formed in the kidneys used?
How is the ammonia formed in the kidneys used?
What is the primary function of converting ammonia to nontoxic metabolites?
What is the primary function of converting ammonia to nontoxic metabolites?
Which form is ammonia transported in from peripheral tissues to the liver?
Which form is ammonia transported in from peripheral tissues to the liver?
What is the role of the enzyme glutaminase in the transport of ammonia?
What is the role of the enzyme glutaminase in the transport of ammonia?
What is the significance of the glucose-alanine cycle in the transport of ammonia?
What is the significance of the glucose-alanine cycle in the transport of ammonia?
What is the role of the enzyme glutamine synthetase in the transport of ammonia?
What is the role of the enzyme glutamine synthetase in the transport of ammonia?
What is the final fate of ammonia transported to the liver?
What is the final fate of ammonia transported to the liver?
