Podcast
Questions and Answers
What is the fate of excess and unwanted proteins in the body?
What is the fate of excess and unwanted proteins in the body?
- They are degraded to amino acids (correct)
- They are excreted as urea
- They are stored for future use
- They are converted to glucose
Which amino acid is the major NH2-group donor for the synthesis of non-essential amino acids?
Which amino acid is the major NH2-group donor for the synthesis of non-essential amino acids?
- Alanine
- Glycine
- Glutamate (correct)
- Leucine
What is the first step in the catabolism of amino acids?
What is the first step in the catabolism of amino acids?
- Formation of ketone bodies
- Conversion to glucose
- Synthesis of body proteins
- Removal of the NH2 group (correct)
Which vitamin is needed for the transamination of amino acids?
Which vitamin is needed for the transamination of amino acids?
Which enzyme catalyzes the reaction of transferring NH2 from majority of the amino acids to α-ketoglutarate?
Which enzyme catalyzes the reaction of transferring NH2 from majority of the amino acids to α-ketoglutarate?
What activates glutamate dehydrogenase, the enzyme involved in the oxidative deamination of glutamate?
What activates glutamate dehydrogenase, the enzyme involved in the oxidative deamination of glutamate?
Which enzyme is the rate-limiting enzyme in the urea cycle?
Which enzyme is the rate-limiting enzyme in the urea cycle?
Where does the conversion of ammonia into urea take place?
Where does the conversion of ammonia into urea take place?
Which amino acids are classified as both glucogenic and ketogenic?
Which amino acids are classified as both glucogenic and ketogenic?
Which intermediates can the carbon skeleton of amino acids be converted into?
Which intermediates can the carbon skeleton of amino acids be converted into?
What are the genetic defects in amino acid metabolism caused by?
What are the genetic defects in amino acid metabolism caused by?
Which condition results from mutations in the genes of the enzymes involved in amino acid metabolism?
Which condition results from mutations in the genes of the enzymes involved in amino acid metabolism?
Which of the following amino acids are only ketogenic and not glucogenic?
Which of the following amino acids are only ketogenic and not glucogenic?
What is required in some places for the detection of genetic defects in amino acid metabolism in newborns?
What is required in some places for the detection of genetic defects in amino acid metabolism in newborns?
Which of the following is an important genetic defect in amino acid metabolism?
Which of the following is an important genetic defect in amino acid metabolism?
What is the major transaminase involved in transamination of amino acids?
What is the major transaminase involved in transamination of amino acids?
Which amino acid participates in transamination along with threonine?
Which amino acid participates in transamination along with threonine?
Which enzyme catalyzes the oxidative deamination of glutamate?
Which enzyme catalyzes the oxidative deamination of glutamate?
Which amino acid is only ketogenic and not glucogenic?
Which amino acid is only ketogenic and not glucogenic?
Which of the following is a precursor required for the urea cycle?
Which of the following is a precursor required for the urea cycle?
Which enzyme is the rate-limiting enzyme in the urea cycle?
Which enzyme is the rate-limiting enzyme in the urea cycle?
Which of the following amino acids can be converted into acetoacetate or acetyl CoA?
Which of the following amino acids can be converted into acetoacetate or acetyl CoA?
Which amino acid is classified as both glucogenic and ketogenic?
Which amino acid is classified as both glucogenic and ketogenic?
Which condition results from mutations in the genes of the enzymes involved in amino acid metabolism?
Which condition results from mutations in the genes of the enzymes involved in amino acid metabolism?
What activates glutamate dehydrogenase, the enzyme involved in the oxidative deamination of glutamate?
What activates glutamate dehydrogenase, the enzyme involved in the oxidative deamination of glutamate?
What is the fate of excess and unwanted proteins in the body?
What is the fate of excess and unwanted proteins in the body?
Which of the following is a common result of metabolic defects in amino acid metabolism?
Which of the following is a common result of metabolic defects in amino acid metabolism?
Which vitamin is needed for the transamination of amino acids?
Which vitamin is needed for the transamination of amino acids?
What is the first step in the catabolism of amino acids?
What is the first step in the catabolism of amino acids?
Which enzyme catalyzes the transfer of NH2 from amino acids to α-ketoglutarate?
Which enzyme catalyzes the transfer of NH2 from amino acids to α-ketoglutarate?
What is the major NH2-group donor for the synthesis of non-essential amino acids?
What is the major NH2-group donor for the synthesis of non-essential amino acids?
Which vitamin is needed in the form of pyridoxal phosphate for the transamination of amino acids?
Which vitamin is needed in the form of pyridoxal phosphate for the transamination of amino acids?
What is the major fate of excess and unwanted proteins in the body?
What is the major fate of excess and unwanted proteins in the body?
Which vitamin is required for transamination of amino acids?
Which vitamin is required for transamination of amino acids?
What is the first step in the catabolism of amino acids?
What is the first step in the catabolism of amino acids?
What is the major NH2-group donor for the synthesis of non-essential amino acids?
What is the major NH2-group donor for the synthesis of non-essential amino acids?
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