The enzyme ornithine transcarbamoylase is associated with the? A. synthesis of cholesterol, B. urea cycle, C....
The enzyme ornithine transcarbamoylase is associated with the?
| A. |
synthesis of cholesterol, |
|
| B. |
urea cycle, |
|
| C. |
synthesis of purines, |
|
| D. |
synthesis of pyrimidines, |
|
| E. |
all of the above, |
|
| F. |
none of the above. |
Homework Answers
The answer is option B
The enzyme ornithine transcarbamylase is the enzyme that is involved in the urea cycle.The enzyme catalyzes the reaction between ornithine and carbamoyl phosphate and forms citrulline and inorganic phosphate.This is a key reaction of urea cycle.
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The enzyme ornithine transcarbamoylase is associated with
the?
A.
synthesis of cholesterol,
B.
urea cycle,
C....
The enzyme carbamoyl phosphate synthase Il is associated with? ОА. gluconeogenesis, B. pyrimidine synthesis, Oglyoxylate cycle,...
The enzyme carbamoyl phosphate synthase Il is associated with? ОА. gluconeogenesis, B. pyrimidine synthesis, Oglyoxylate cycle, OD.purine synthesis, E. urea cycle, OF. all of the above. 5-Phosphoribosyl-1-pyrophosphate (PRPP) is required for which of the following processes? O A De novo synthesis of purine nucleotides, OB. Salvage of the purines, OC. New synthesis of pyrimidines, OD. Salvage of pyrimidines. O E. All of the above. OF. None of the above. The final purine degradation and excretion product in humans is? O...
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)
SERBP, SCAP, Insig and Sec are proteins associated with regulating the synthesis of HMG-CoA reductase and...
SERBP, SCAP, Insig and Sec are proteins associated with regulating the synthesis of HMG-CoA reductase and other enzymes of cholesterol synthesis and uptake. What compounds bind to SCAP and Insig to down-regulate HMG- CoA reductase and cholesterol synthesis? A. ammonia and urea, B. glutamate and glutamine, OC. sterols and oxysterols, OD IMP and OMP, O E. all of the above, OF none of the above, QUESTION 15 The synthesis of which of the following compounds requires the most ATP and...
5. Sulfanilamides are a class of antibiotics that inhibit an enzyme involved in the synthesis of...
5. Sulfanilamides are a class of antibiotics that inhibit an enzyme involved in the synthesis of folic acid, which is necessary for the synthesis of purines and pyrimidines. A) Explain why inhibiting this enzyme would lead to the death of bacterial cells. B) Sulfanilamides are competitive inhibitors. Do you think that sulfanilamides are likely to bind reversibly or irreversibly to the enzyme? Explain your answer.
QUESTION 4 The rate limiting enzyme for cholesterol synthesis is A Acyl-CoA-cholesterol acyl transferase (ACAT) B....
QUESTION 4 The rate limiting enzyme for cholesterol synthesis is A Acyl-CoA-cholesterol acyl transferase (ACAT) B. HMG-CoA Lyase C. HMG-CoA Reductase D. HMG-CoA Synthase
Statins work to inhibit cholesterol synthesis by competing for the active site of an enzyme involved...
Statins work to inhibit cholesterol synthesis by competing for the active site of an enzyme involved in this pathway. What is the normal product of this enzyme? a. Squalene b. Mevalonate c. HMG CoA d. Isopenetnyl pyrophosphate
Stage 2 of the urea cycle involves transport of citrulline to cytosol condensation reaction All of...
Stage 2 of the urea cycle involves transport of citrulline to cytosol condensation reaction All of the listed answers argininocuccinate sythetase In the forth stage of the urea cycle O urea produced ornithine regenerated all answers provided water is the source of the oxygen atom How much energy is used or produced during the urea cycle? equivalent of 4 ATP made 4 APT made and 4 ATP used None of the provided answers o equivalent of 4 ATP used The...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characterizin...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characterizing a possible new inhibitor and want to determine its mode of binding to HMG-CoA reductase. Equilibrium dialysis measurements at 25°C, 30°C, and 37°C yielded dissociation constants (Ks) of 2.5 x 10* M, 1.5 x 10*, and 1.0 x 10* M, respectively, for the HMG- CoA reductase-inhibitor complex a. Is the binding becoming better or worse with increasing temperature? Explain. b. Using Excel or...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characteri...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characterizing a possible new inhibitor and want to determine its mode of binding to HMG-CoA reductase. Equilibrium dialysis measurements at 25 C, 30°C, and 37 C yielded dissociation constants (K.) of 2.5 x 10" М, 1.5 x 10", and 1.0 x 103 M, respectively, for the HMG-CoA reductase-inhibitor complex. a. Is the binding becoming better or worse with increasing temperature? Explain. b. Using Excel...
The synthesis of which of the following compounds requires the most ATP and NADPH? A. Palmitate...
The synthesis of which of the following compounds requires the most ATP and NADPH? A. Palmitate (16:0) B. GTP C. Urea D. CTP E. Lysine F. Cholesterol
The enzyme carbamoyl phosphate synthase Il is associated with? ОА. gluconeogenesis, B. pyrimidine synthesis, Oglyoxylate cycle, OD.purine synthesis, E. urea cycle, OF. all of the above. 5-Phosphoribosyl-1-pyrophosphate (PRPP) is required for which of the following processes? O A De novo synthesis of purine nucleotides, OB. Salvage of the purines, OC. New synthesis of pyrimidines, OD. Salvage of pyrimidines. O E. All of the above. OF. None of the above. The final purine degradation and excretion product in humans is? O...
SERBP, SCAP, Insig and Sec are proteins associated with regulating the synthesis of HMG-CoA reductase and other enzymes of cholesterol synthesis and uptake. What compounds bind to SCAP and Insig to down-regulate HMG- CoA reductase and cholesterol synthesis? A. ammonia and urea, B. glutamate and glutamine, OC. sterols and oxysterols, OD IMP and OMP, O E. all of the above, OF none of the above, QUESTION 15 The synthesis of which of the following compounds requires the most ATP and...
5. Sulfanilamides are a class of antibiotics that inhibit an enzyme involved in the synthesis of folic acid, which is necessary for the synthesis of purines and pyrimidines. A) Explain why inhibiting this enzyme would lead to the death of bacterial cells. B) Sulfanilamides are competitive inhibitors. Do you think that sulfanilamides are likely to bind reversibly or irreversibly to the enzyme? Explain your answer.
QUESTION 4 The rate limiting enzyme for cholesterol synthesis is A Acyl-CoA-cholesterol acyl transferase (ACAT) B. HMG-CoA Lyase C. HMG-CoA Reductase D. HMG-CoA Synthase
Stage 2 of the urea cycle involves transport of citrulline to cytosol condensation reaction All of the listed answers argininocuccinate sythetase In the forth stage of the urea cycle O urea produced ornithine regenerated all answers provided water is the source of the oxygen atom How much energy is used or produced during the urea cycle? equivalent of 4 ATP made 4 APT made and 4 ATP used None of the provided answers o equivalent of 4 ATP used The...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characterizing a possible new inhibitor and want to determine its mode of binding to HMG-CoA reductase. Equilibrium dialysis measurements at 25°C, 30°C, and 37°C yielded dissociation constants (Ks) of 2.5 x 10* M, 1.5 x 10*, and 1.0 x 10* M, respectively, for the HMG- CoA reductase-inhibitor complex a. Is the binding becoming better or worse with increasing temperature? Explain. b. Using Excel or...
HMG-CoA reductase, a critical enzyme in cholesterol synthesis is the target or statin inhibitors. You are characterizing a possible new inhibitor and want to determine its mode of binding to HMG-CoA reductase. Equilibrium dialysis measurements at 25 C, 30°C, and 37 C yielded dissociation constants (K.) of 2.5 x 10" М, 1.5 x 10", and 1.0 x 103 M, respectively, for the HMG-CoA reductase-inhibitor complex. a. Is the binding becoming better or worse with increasing temperature? Explain. b. Using Excel...
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