Homework Answers
Q31. The correct option is: C (oxaloacetate + glutamate → α-ketogluteric acid + aspartate)
Explanation: Citrulline gets converted to Arginosuccinate in presence of an enzyme Arginosuccinate synthetase and the amino acid Aspartate.
Q32.The correct option is: D (Glutamate → α-ketogluteric acid + ammonia)
Explanation: the breakdown of amino acid glutamate produces ammonia which combines with carbon dioxide to produce Carbamoyl phosphate in the presence of an enzyme Carbamoyl phosphate synthetase.
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31. Which of the following reactions produces a molecule that is directly part of the urea...
Can someone please check my answers and aid in #12? 1. The amide nitrogen of glutamine:...
Can someone please check my answers and aid in #12? 1. The amide nitrogen of glutamine: A. represents a nontoxic transport form of ammonia. B. is a major source of ammonia for urinary excretion. C. is used in the synthesis of asparagine, purines, and pynimidines. D. can be recovered as ammonia by the action of glutaminase. E. all of the above are correct. 2- Which of the following statements about glutamate is NOT true: a It can be synthesized in...
In the urea cycle; A. Carbamoyl phosphate is derived directly from glutamine and carbon dioxide B....
In the urea cycle; A. Carbamoyl phosphate is derived directly from glutamine and carbon dioxide B. Ornithine reacts with aspartate to generate argininosuccinate C. The amino group of arginine forms one of the nitrogens of urea D. Ornithine directly reacts with carbamoyl phosphate to form citrulline E. N-acetylglutamate is a positive allosteric effector of Ornithine transcarbamoylase (OTC)
The "missing" molecule that allowed Krebs to work out the urea cycle pathway is_____________. fumarate carbamoyl...
The "missing" molecule that allowed Krebs to work out the urea cycle pathway is_____________. fumarate carbamoyl phosphate ornithine citrulline arginosuccinate The first nitrogen in the citric acid cycle is introduced by what molecule? glutamic acid carbamoyl phosphate glutamine directly from ammonia please answer both of them
Amino acid metabolism produces that is directly link to the formation of O CO2, urea Oxaloacetate,...
Amino acid metabolism produces that is directly link to the formation of O CO2, urea Oxaloacetate, ATP ammonia, urea NH3, Fats
Threonine is converted to succinyl CoA through a process that produces 1 molecule of ammonia and...
Threonine is converted to succinyl CoA through a process that produces 1 molecule of ammonia and 1 NADH while requiring 1 ATP. Consider that the resulting succinyl CoA can use a portion of the citric acid cycle to be converted to oxaloacetate. 1. (2 points) How many molecules of threonine would be required to produce one molecule of glucose? 2. (6 points) What is the net consumption or production of NADH, FADH2, and ATP for the synthesis of one molecule...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric acid b. Pyruvate C. carboxylic acid 2. Process of breakdown of amino acids to a keto acids is called... a. Amination b. transamination c. deamination 3. Function of proteins is to ........ A. catalyze biochemical reactions. c. synthesis of nucleoproteins. b. regulates reactions d. all of above. 4.Transamination is catalyzed by.......... a. hydrogenases. b. glutamate transaminase. c.dehydrogenases. 5. the source of amino acid pool...
Which of the following amino acids transports and releases two equivalents of ammonia to the mitochondrial...
Which of the following amino acids transports and releases two equivalents of ammonia to the mitochondrial matrix by hydrolytic and oxidative deamination? A) Aspartate B) Alanine C) Glutamate D) Glutamine E) Both C and D
Which of the following is correct and most accurately describes the complete urea cycle of the eu...
Which of the following is correct and most accurately describes
the complete urea cycle of the eukaryotic cell?
Choose one:A. The urea cycle occurs completely
within the cytoplasm of the eukaryotic cell.B. The urea cycle
occurs between the inner mitochondrial membrane and the matrix of
the eukaryotic cell.C. The urea cycle occurs between the
mitochondrial matrix and the cytoplasm of the eukaryotic cell.D.
The urea cycle occurs completely within the mitochondrial matrix of
the eukaryotic cell.
Part 2 (1 point)...
Amino acids can be categorized according to the body's ability to synthesize them. Both essential and...
Amino acids can be categorized according to the body's ability to synthesize them. Both essential and nonessential amino acids are necessary for life, but the human body is unable to synthesize some amino acids. Different pathways enable synthesis of nonessential amino acids from five precursors: pyruvate, 3-phosphoglycerate, oxaloacetate, a-ketoglutarate, and phenylalanine. Many of these pathways include a process called transamination, which is a reaction between an amino acid and an alpha-keto acid. Some non essential amino acids are synthesized in...
Alanine is an allosteric inhibitor of liver pyruvate kinase. What might be the reason? In choosing...
Alanine is an allosteric inhibitor of liver pyruvate kinase. What might be the reason? In choosing your answer consider the role of alanine in the glucose-alanine cycle. Select one: a. It reduces the amount of ATP available for the urea cycle. b. It reduces the availability of pyruvate as an acceptor for the amino-groups derived from alanine. c. It reduces the use of phosphenolpyruvate in glycolysis. d. It increases the synthesis of glycerol-3-phosphate for fat biosynthesis. e. It reduces the...
Amino acid metabolism produces that is directly link to the formation of O CO2, urea Oxaloacetate, ATP ammonia, urea NH3, Fats
Threonine is converted to succinyl CoA through a process that produces 1 molecule of ammonia and 1 NADH while requiring 1 ATP. Consider that the resulting succinyl CoA can use a portion of the citric acid cycle to be converted to oxaloacetate. 1. (2 points) How many molecules of threonine would be required to produce one molecule of glucose? 2. (6 points) What is the net consumption or production of NADH, FADH2, and ATP for the synthesis of one molecule...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric acid b. Pyruvate C. carboxylic acid 2. Process of breakdown of amino acids to a keto acids is called... a. Amination b. transamination c. deamination 3. Function of proteins is to ........ A. catalyze biochemical reactions. c. synthesis of nucleoproteins. b. regulates reactions d. all of above. 4.Transamination is catalyzed by.......... a. hydrogenases. b. glutamate transaminase. c.dehydrogenases. 5. the source of amino acid pool...
Which of the following is correct and most accurately describes
the complete urea cycle of the eukaryotic cell?
Choose one:A. The urea cycle occurs completely
within the cytoplasm of the eukaryotic cell.B. The urea cycle
occurs between the inner mitochondrial membrane and the matrix of
the eukaryotic cell.C. The urea cycle occurs between the
mitochondrial matrix and the cytoplasm of the eukaryotic cell.D.
The urea cycle occurs completely within the mitochondrial matrix of
the eukaryotic cell.
Part 2 (1 point)...
Amino acids can be categorized according to the body's ability to synthesize them. Both essential and nonessential amino acids are necessary for life, but the human body is unable to synthesize some amino acids. Different pathways enable synthesis of nonessential amino acids from five precursors: pyruvate, 3-phosphoglycerate, oxaloacetate, a-ketoglutarate, and phenylalanine. Many of these pathways include a process called transamination, which is a reaction between an amino acid and an alpha-keto acid. Some non essential amino acids are synthesized in...
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