If the C-2 carbon of glucose were labeled with 14C, which if the carbons atoms in...
Homework Answers
2nd carbon will be
radiolabelled
From the above image, we can see that 2nd carbon of glucose goes into DHAP which is than isomerized into G3P. G3P than forms 3PGA and hence, the second carbon goes into it.
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If
the C-2 carbon of glucose were labeled with 14C, which if the
carbons atoms in...
If glucose labeled with 14C at C-2 were metabolized in the liver, the first radioactive pyruvate...
If glucose labeled with 14C at C-2 were metabolized in the liver, the first radioactive pyruvate formed would be labeled in (pick from list given below) i) all three carbons ii) its carbonyl carbon iii) its carboxyl carbon iv) its methyl carbon Ali B) ii C) iii D) iv E) A and C
.) (3pts) If radioactive glucose labeled at carbon #6 with 14C, were incubated in a cell-free liv...
.) (3pts) If radioactive glucose labeled at carbon #6 with 14C, were incubated in a cell-free liver homogenate under anaerobic conditions, which carbon in the lactate produced would be labeled with 1℃ (refer to the carboxyl carbon of lactate as C1, the central carbon as C2, and the methyl carbon as C3)? What if theglucose were labeled at carbon #3 instead? In both cases, explain your answer.
.) (3pts) If radioactive glucose labeled at carbon #6 with 14C, were incubated...
If glucose were radiolabeled with 14C in C-2, what carbon would you find the radiolabel in...
If glucose were radiolabeled with 14C in C-2, what carbon would you find the radiolabel in phosphoenolpyruvate? a. 1 b. 2 c. 3 d. all carbons e. cannot be determined please provide the mechanism
21. Glucose labeled with 14C in C-1 and C-4 gives rise in glycolysis to pyruvate labeled...
21. Glucose labeled with 14C in C-1 and C-4 gives rise in glycolysis to pyruvate labeled in: A) its methyl carbon B) all three carbons C) its carbonyl carbon D) its carboxyl carbon E) A and D
Answer any one and only one of the following: a. If glucose labeled with 14C in...
Answer any one and only one of the following: a. If glucose labeled with 14C in C-1 were fed to yeast cells carrying out anaerobic metabolism, what carbon atom would be tagged with 14C in what compound? b.If palmitic acid (16:0) labeled in C-1 were metabolized under anaerobic metabolism in mammalian tissues, what carbon atom would be tagged with 14C in what compound?
Q4. Compound A is labeled at the methyl carbon with 14C (*). Under fasting conditions, the...
Q4. Compound A is labeled at the methyl carbon with 14C (*). Under fasting conditions, the 14C label ends up in compound C during steady-state metabolism in liver. COO- çoo- FO +H COO- H *CH3 a. What is the metabolic pathway involved? Write the reaction including all reactants and products, no structures required (1) b. Which carbons in compound C will become labeled, and to what percent? Briefly explain. (3) c. What is the physiological basis and the molecular mechanism...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with 14C, and in which position of the acetyl moiety will the 14C label be found? Select the correct answer and explain your reasoning 100% of the acetyl-CoA will be labeled at C-1 (carboxyl). 100% of the acetyl-CoA will be labeled at C-2. 50% of the acetyl-CoA will...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with 14C, and in which position of the acetyl moiety will the 14C label be found? Select the correct answer and explain your reasoning 100% of the acetyl-CoA will be labeled at C-1 (carboxyl). 100% of the acetyl-CoA will be labeled at C-2. 50% of the acetyl-CoA will...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with 14C, and in which position of the acetyl moiety will the 14C label be found? Select the correct answer and explain your reasoning 100% of the acetyl-CoA will be labeled at C-1 (carboxyl). 100% of the acetyl-CoA will be labeled at C-2. 50% of the acetyl-CoA will...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via...
Question 3 Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase complex. What percentage of the acetyl-CoA molecules formed will be labeled with 14C, and in which position of the acetyl moiety will the 14C label be found? Select the correct answer and explain your reasoning 100% of the acetyl-CoA will be labeled at C-1 (carboxyl). 100% of the acetyl-CoA will be labeled at C-2. 50% of the acetyl-CoA will...
If glucose labeled with 14C at C-2 were metabolized in the liver, the first radioactive pyruvate formed would be labeled in (pick from list given below) i) all three carbons ii) its carbonyl carbon iii) its carboxyl carbon iv) its methyl carbon Ali B) ii C) iii D) iv E) A and C
.) (3pts) If radioactive glucose labeled at carbon #6 with 14C, were incubated in a cell-free liver homogenate under anaerobic conditions, which carbon in the lactate produced would be labeled with 1℃ (refer to the carboxyl carbon of lactate as C1, the central carbon as C2, and the methyl carbon as C3)? What if theglucose were labeled at carbon #3 instead? In both cases, explain your answer.
.) (3pts) If radioactive glucose labeled at carbon #6 with 14C, were incubated...
21. Glucose labeled with 14C in C-1 and C-4 gives rise in glycolysis to pyruvate labeled in: A) its methyl carbon B) all three carbons C) its carbonyl carbon D) its carboxyl carbon E) A and D
Answer any one and only one of the following: a. If glucose labeled with 14C in C-1 were fed to yeast cells carrying out anaerobic metabolism, what carbon atom would be tagged with 14C in what compound? b.If palmitic acid (16:0) labeled in C-1 were metabolized under anaerobic metabolism in mammalian tissues, what carbon atom would be tagged with 14C in what compound?
Q4. Compound A is labeled at the methyl carbon with 14C (*). Under fasting conditions, the 14C label ends up in compound C during steady-state metabolism in liver. COO- çoo- FO +H COO- H *CH3 a. What is the metabolic pathway involved? Write the reaction including all reactants and products, no structures required (1) b. Which carbons in compound C will become labeled, and to what percent? Briefly explain. (3) c. What is the physiological basis and the molecular mechanism...
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