Which of the following is not an intermediate in the glycolytic pathway by which glucose is oxidized to pyruvate

Question

BlackTom AI · Accepted Answer

Framing the question: we are asked to identify which option is not an intermediate in the glycolytic pathway that oxidizes glucose to pyruvate.
Option 1: 3-phosphoglycerate. This molecule appears in glycolysis after the cleavage steps, formed from 1,3-bisphosphoglycerate and preceding phosphoenolpyruvate formation. It is indeed an intermediate.
Option 2: Fructose 1,6-bisphosphate. This is an early glycolytic intermediate produced from fructose-6-phosphate by phosphofructokinase-1, a key regulatory step. It clearly participates in glycolysis.
Option 3: Glucose 1-phosphate. This compound is a glucose derivative used primarily in glycogen metabolism and the salvage pathway; it is not a standard glycolytic intermediate and is not formed along the classical glycolytic sequence from glucose to pyruvate. This makes it the outlier among the listed options.
Option 4: Glyceraldehyde 3-phosphate. This is a central glycolytic intermediate formed from fructose 1,6-bisphosphate via aldolase and is subsequently oxidized to 1,3-bisphosphoglycerate, continuing the pathway toward pyruvate. It is definitely an intermediate.
Option 5: Phosphoenolpyruvate. This high-energy intermediate sits near the end of glycolysis, formed just before pyruvate via the enolase-catalyzed step and then converted to pyruvate by pyruvate kinase. It is a classic glycolytic intermediate.
In summary, every choice except Glucose 1-phosphate aligns with the standard glycolytic sequence from glucose to pyruvate, either as an early, middle, or late intermediate, whereas Glucose 1-phosphate is not part of the glycolytic steps and belongs to other carbohydrate metabolism pathways.

Which of the following is not an intermediate in the glycolytic pathway by which glucose is oxidized to pyruvate

查看解析

登录即可查看完整答案

类似问题

Which enzyme of the ones shown below generates the first intermediate compound with a high phosphoryl‑transfer potential that is not ATP

What is the function of glyceraldehyde 3-phosphate dehydrogenase?

What reaction is catalyzed by aldolase?

What two 3-carbon molecules are generated by the cleavage of fructose-1,6-bisphosphate?

Which of the following must be regenerated for glycolysis to proceed?

Which of the following glycolytic reactions constitutes a major thermodynamic driving force for glycolysis in vivo

Which of the following best describes the net organic products formed during the oxidation of one molecule of glucose to two molecules of pyruvate via glycolysis

If glucose is labeled with 14C at the C1 position only, which of the following would occur if the glucose underwent glycolysis? Hint: Open chain form of Glucose has an aldehyde group at C1

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单