Concept explainers
Interpretation: To compare the net ATP production from the processing of one fructose and one glucose molecule through the glycolic
Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of ATP molecules and NADH-reduced coenzymes.
Adenosine triphosphate (ATP) is the energy currency of life that provides energy to carry out the metabolic processes in the living cells. After the consumption in the metabolic processes, ATP is converted either to adenosine monophosphate (AMP) or to adenosine diphosphate (ADP).
Galactose and glucose are monosaccharides with the same molecular formula
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Chapter 24 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- When fructose present in either liver or muscle undergoes glycolysis to form pyruvate, how many moles of ATP are consumed to activate it? 1 2 4 none b When glyceraldehyde-3-phosphate undergoes glycolysis to form pyruvate, how many moles of ATP are produced? 1 2 4 none c When fructose undergoes glycolysis to form two moles of pyruvate, how many moles of ATP are produced? 1 2 4 none d Is there a difference in the way fructose is metabolized in the liver versus in muscle tissue? yes noarrow_forwardIn the Cori cycle, the lactate product of glycolysis in muscle is transformedback into glucose by the liver. (a) List the enzymes involved in the lactate → glucose pathway. (b) What is the net gain/loss of ATP for one round of the Cori cycle (glucose → lactate → glucose)?arrow_forwarda) How many moles of ATP can be gained from the catabolism of the following substrates to pyruvate? 2 Mole mannose 2 Mole lactose mole glycerol. b) Name three metabolic processes in the cell that are enhanced and two that are inhibited in response to the hormone insulinarrow_forward
- The overall reactions for gluconeogenesis and glycolysis are given below. What is the energy cost (in ATP equivalents) of transforming one molecule of glucose to pyruvate (via glycolysis) and back to glucose (via gluconeogenesis)? Gluconeogenesis: 2 pyruvate + 4 ATP + 2 GTP + 2NADH + 4H₂O Glycolysis: Glucose + 2ADP + 2P₁ + 2NAD+ - 2 pyruvate + 2ATP + 2NADH + 2H+ + 2H₂000 Select one: O a. 2 ATP O b. 4 ATP O c. 6 ATP O d. 8 ATP Prev Page glucose + 4ADP + 2GDP + 2P₁ + 2NAD+ + 2H+ MI 21 22 00:508D DAD 1=1 SE 30: DONDOK 23 24 25 26 27 28 29 30 Report question issue B Next Page Garrow_forwardWhich reactions of glycolysis can be reversed? Which are irreversible? What is the significance of the metabolically irreversible reactions?arrow_forwardWhat is the net synthesis of ATP when one molecule of fructose-6-phosphate gets converted into 2 molecules of pyruvate?arrow_forward
- How many ATP or NADH molecules are produced or required in each of the following steps in glycolysis? Match the words in the left column to the appropriate blanks in the sentences on the right. zero one two produced required In the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate, NADH molecules are In the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate, NADH molecules are In the conversion of phosphoenolpyruvate to pyruvate molecules are ATP and Reset ATP and ATP and Help NADHarrow_forwardWhat should be the net yield of ATP in glycolysis when endogenous glycogen is used? Give answer as a numeric value.arrow_forwardWhich of the following events occurs during the energy-payoff phase of glycolysis? One carbon of a pyruvate molecule is oxidized to carbon dioxide. Oxaloacetate receives a two-carbon acetyl group from acetyl coenzyme A to form citrate. Substrate-level phosphorylation Oxidative Phosphorylation In which stage of aerobic cellular respiration are FADH2 molecules produced? Pyruvate Oxidation Glycolysis Krebs Cycle Electron Transport Which of the following events does not occur during pyruvate processing (pyruvate oxidation)? One carbon atom of each pyruvate is oxidized to carbon dioxide. NAD+ coenzyme is reduced to NADH. The remaining two carbon atoms of pyruvate (acetyl unit) reacts with coenzyme A to produce acetyl CoA. FAD coenzyme receives two hydrogen atoms to produce FADH2.arrow_forward
- When 1 mole of fructose 1,6-bisphosphate is converted to 2 moles of pyruvate via the glycolysis pathway, the net formation of: *arrow_forwardWhat compounds with high phosphate group-transfer potential are synthesized during glycolysis?arrow_forwardWhich of the following molecules controls the metabolic flow through both glycolysis and gluconeogenesis? fructose-2,6-bisphosphate O pyruvate O 2,3-bisphosphoglycerate O Glucose-6-phosphate O lactic acid O citrate Which of the following enzymes plays a role in controlling the the half-life of CGMP? O CGMP phosphodiesterase O CGMP phosphatase O CGMP half-life controlling enzyme O CGMP kinase O CGMP phosphorylasearrow_forward
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