**Question:**If a cell were given glucose labeled at carbon-3 with ¹⁴C, what carbon(s) of pyruvate would contain the label?**Options:**- ○ 1- ○ 2- ○ 3- ○ 1 and 3- ○ 2 and 3**Explanation of the Question:**This question tests your understanding of the glycolytic pathway, specifically how glucose is metabolized into pyruvate. Labeling carbon-3 of glucose with ¹⁴C allows for tracing of this carbon atom through the metabolic pathway.**Analysis:**- During glycolysis, glucose is cleaved into two molecules of glyceraldehyde-3-phosphate (G3P) and dihydroxyacetone phosphate (DHAP), which are interconverted. The process ultimately leads to two molecules of pyruvate.- Each original carbon from glucose is distributed in specific patterns in the resulting pyruvate molecules.- Understanding the steps will help identify which carbon(s) in pyruvate corresponds to the labeled carbon in glucose.**Applications in Education:**- This example can demonstrate the importance of carbon tracing in metabolic pathways.- It highlights the complexity of cellular respiration and the fate of atoms during biochemical reactions.

Glycolysis is a process by which a cell converts one glucose molecule to 2 molecules of pyruvate.…

Answered: If a cell were given glucose labeled at…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Palmitic acid is synthesized from the excess citrate from increased catabolism of glucose that overflows out of the mitochondria. How many moles glucose will be catabolized to produce the amount of acetyl CoA for the synthesis of one mole palmitic acid? 2 4 6 .8 1
In the Krebs Cycle (Citric Acid Cycle), A 4-carbon compound with a 2-carbon unit to yield a 6-carbon tricarboxylic acid Oxaloacetate, acetyl, citrate O Oxaloacetate, citrate, isocitrate O Fumarate, malate, oxaloacetate O Acetyl, succinate, malate condenses
The citric acid cycle converts each acetyl-CoA to [1/2/3/4] molecules of CO2. This pathway is considered [catabolic/anabolic] because it breaks down acetyl-CoA into smaller molecules and [catabolic/anabolic] because the intermediates are building blocks for other metabolites in the cell. The citric acid cycle produces [1/2/3] NADH and [1/2/3] FADH2 for every acetyl-CoA consumed. help fill in the blanks
threose-4 phosphate (a 4 carbon aldose) is fed into glycolysis after a decarboxylation reaction that uses an NAD+ to generate a 3 carbon aldose. How many ATP and NADH are generated by breaking down this molecule to pyruvate?
Explain why some of the molecules are positioned away from the diagonal in the graph given below. What kind of processes are involved in this phenomenon? Moreover, explain differences and similarities between H-ATPases and H-PPases.
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If cells synthesizing glucose from pyruvate are exposed to co2 labbeled 14C use the structure of gluconeogenesis to write where the carbon ultimately ends up.
Fatty acid chains after subjected to degradative enzymes in the intestines are hydrolyzed (hydrolysis) into 2 Carbon acetic acid fragments (Each fragment becomes an acetyl Co-A molecule). What stage of cellular respiration will this product of lipolysis enter? How many ATP can one fragment produce in cellular respiration?
1,3-bisphosphoglycerate is used to produce ATP. Which of the two phosphates of 1,3- bisphosphoglycerate is transferred to ADP to make ATP. Explain why it is this specific phosphate and not the other one.
Phosphofructokinase (PFK-1) is one of the most regulated enzymes in metabolism. Based on all of the principles we have learned in this class, which of the following would be most likely to be an allosteric activator of PFK-1? a Pyruvate b Acetyl CoA c Citric acid d glucose
Using the following glycolisis diagram, a. name all the steps in citric acid cycle, what are the intermediates. refer to the diagram given. b. Is glycolysis endothermic or exothermic.
44 45 46 47 48 50 27 Use the following figure to answer the question. CO2 Охаlоасеtic acid Phosphoenol- pyruvate AMP+ P K NADPH Cell I NADP+ ATP Malic acid Pyruvic acid Pyruvic acid Malic acid RUBP NADP CO2 Cell II NADPH Triose Phospho- glycerate Which of the following statements is true concerning the accompanying figure? O It represents a C4 photosynthetic system. It represents an adaptation that maximizes photorespiration. It represents a CAM photosynthetic system. It represents a C3 photosynthetic system. A Moving to another question will save this response. esc DII D 身 49

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If a cell were given glucose labeled at carbon-3 with 14C, what carbon(s) of pyruvate would contain the label? 1 2 3 1 and 3 O2 and 3