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1. If the C-1 carbon of glucose were labelled with 14C, which of the carbon atoms...

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Biology

1. If the C-1 carbon of glucose were labelled with 14C, which ofthe carbon atoms in pyruvate would be labelled afterglycolysis?

a) the carboxylate carbon

b) the carbonyl carbon

c) the methyl carbon

*** the Answer is c) but I don't understand why, can u plzexplain why?

2. How many \"high energy\" bonds are required to convertoxaloacetate to glucose?

***answer is 4 but I don't understand why, can u plz exapain

3. Which of the following statements correctly describes whathappens whe acetyl CoA is abundant

a) Pyruvate carboxylase is activated

b) phosphoenolpyruvate carboxykinase is activated

c) phosphofructokinase is activated

d) If ATP levels are high, oxaloacetate is diverted togluconeogenesis

e) If ATP levels are low, oxaloacetate is diverted togluconeogenesis

*** Answer is a) and d), can u plz explain why thank you!

Last question, can liver cells do glycolysis, or do they only dogluconeogenesis?

Answer & Explanation Solved by verified expert
3.8 Ratings (465 Votes)
1 you will Get radioisotopes on methyl carbon because other carbons of glucose becomes modified and half is broken down into dihydroxyacetone phosphate and glyceraldehyde 3 phosphate And the 1 C of glucose become CH3 after various reduction step That why methyl carbon of pyruvate remain radiolaveled 2first oxaloacetate is transported out of    See Answer
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