Homework Answers
there is less energy in two molecules of pyruvate than in one molecule of glucose.
In animals, carbohydrates are stored as glycogen. It is first broken down into glucose and in the cytoplasm broken down into two molecules of pyruvate. A molecule of glucose (C6H12O6) has more energy than 2 molecules of pyruvate (C3H4O3). Other statements are false.
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E) the Krebs cycle 13) Pyruvate is the last product of glycolysis. Which statement below is...
Which one of the following statements about glycolysis and Krebs cycle is correct? A. Succinate is...
Which one of the following statements about glycolysis and Krebs cycle is correct? A. Succinate is the oxidized product of a redox reaction in Krebs cycle. B. For every pyruvate, 8 NADH result from Krebs cycle. C. The coenzyme in the oxidation of isocitrate is CO2. D. Pyruvate can be found in the cytoplasm and mitochondrial matrix of eukaryotic cells. E. Oxaloacetate is the reduced product of a redox reaction in Krebs cycle.
uit OT 50 Identify the following characteristics as applying to either glycolysis or the Krebs cycle....
uit OT 50 Identify the following characteristics as applying to either glycolysis or the Krebs cycle. Characteristics (8 items) Drag and drop into the appropriate area Cellular Respiration Glycolysis Krebs Cycle Outputs: FADH2, NADH, carbon dioxide, 2 ATP Outputs 2 ATP, pyruvate, NADH Input pyruvate Input glucose Happens in cytoplasm Happens in mitochondna Is aerobic Is anaerobic
14. What is an outcome of glycolysis? the breakdown of a pyruvate molecule into two smaller...
14. What is an outcome of glycolysis? the breakdown of a pyruvate molecule into two smaller glucose molecules the breakdown of NADH into NAD+ and high-energy electrons the breakdown of a glucose molecule into two smaller pyruvate molecules the breakdown of ATP into molecules of ADP the breakdown of glucose into molecules of carbon dioxide
Catabolism of Glucose. In the following paragraphs, write in the term that fits best. One of...
Catabolism of Glucose. In the following paragraphs, write in the term that fits best. One of the most thoroughly studied aspects of metabolism is the catabolism of glucose. The process involves many chemical steps and three metabolic The first of these is called . In this pathway, one 6-carbon glucose molecule is converted into two 3-carbon molecules of the early steps of this metabolic pathway, two molecules of must be supplied for energy. Later on, however, a total of ATP...
As pyruvate is completely broken down in the TCA (Krebs) cycle, some of its energy is...
As pyruvate is completely broken down in the TCA (Krebs) cycle, some of its energy is A) conserved in the water molecules resulting from reduction of oxygen. B) conserved in the carbon dioxide molecules released by the processes. C) conserved in FAD and NAD+. D) conserved in NADH + H+ and FADH2. E) found in the oxygen used in the electron transport chain.
Which of the following statements is not true? Glycolysis produces most of the ATP required by...
Which of the following statements is not true? Glycolysis produces most of the ATP required by aerobic organisms like us Glycolysis produces pyruvate, which is consumed by the Krebs cycle Glycolysis occurs in the cytosol of the cell Glycolysis is the first stage of cellular respiration • The Krebs cycle reactions Takes place in the cytoplasm Converts glucose to pyruvate Generate ATP with the help of an enzyme complex called ATP synthase Yield ATP, NADH, and FADH2 • Which of...
FOR BIOCHEMISTRY: 1. The end products of glycolysis are all except ______________ NADH citrate pyruvate Acetyl...
FOR BIOCHEMISTRY: 1. The end products of glycolysis are all except ______________ NADH citrate pyruvate Acetyl CoA 2. What substance is produced by the oxidation of pyruvate and feeds into the citric acid cycle? glucose Acetyl CoA O2 CO2 3. Pyruvate can only oxidize in a presence of oxygen true false 4. Which of the following is Uncharacteristic of ATP? It is formed by attaching a phosphate group to ADP with a high-energy bond When dephosphorylated, ATP becomes ADP It...
Which of the following molecules has the highest amount of energy that will be collected during...
Which of the following molecules has the highest amount of energy that will be collected during its further metabolism in cellular respiration? C6H1206 pyruvate O CO2 02 ATP When glucose and oxygen become carbon dioxide plus water (cell respiration reaction) which of the following is true: The reaction is... positive delta G and glucose is oxidized negative delta G and glucose is oxidized positive delta G and glucose is reduced negative delta G and glucose is reduced The majority of...
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between...
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between glycolysis and the citric acid cycle. The carbon atoms in pyruvate are numbered and where they end up in the products are indicated CO0Θ 2 C=O + HS-CoA 3 CH3 Pyruvate S-COA 2C=O 3 CH3 Acetyl CoA Pyruvate dehydrogenase +1 CO2 a) Is C atom 1 in CO2 in a more reduced state or more oxidized state compared to its state in pyruvate? Why?...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 +...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
uit OT 50 Identify the following characteristics as applying to either glycolysis or the Krebs cycle. Characteristics (8 items) Drag and drop into the appropriate area Cellular Respiration Glycolysis Krebs Cycle Outputs: FADH2, NADH, carbon dioxide, 2 ATP Outputs 2 ATP, pyruvate, NADH Input pyruvate Input glucose Happens in cytoplasm Happens in mitochondna Is aerobic Is anaerobic
Catabolism of Glucose. In the following paragraphs, write in the term that fits best. One of the most thoroughly studied aspects of metabolism is the catabolism of glucose. The process involves many chemical steps and three metabolic The first of these is called . In this pathway, one 6-carbon glucose molecule is converted into two 3-carbon molecules of the early steps of this metabolic pathway, two molecules of must be supplied for energy. Later on, however, a total of ATP...
Which of the following statements is not true? Glycolysis produces most of the ATP required by aerobic organisms like us Glycolysis produces pyruvate, which is consumed by the Krebs cycle Glycolysis occurs in the cytosol of the cell Glycolysis is the first stage of cellular respiration • The Krebs cycle reactions Takes place in the cytoplasm Converts glucose to pyruvate Generate ATP with the help of an enzyme complex called ATP synthase Yield ATP, NADH, and FADH2 • Which of...
Which of the following molecules has the highest amount of energy that will be collected during its further metabolism in cellular respiration? C6H1206 pyruvate O CO2 02 ATP When glucose and oxygen become carbon dioxide plus water (cell respiration reaction) which of the following is true: The reaction is... positive delta G and glucose is oxidized negative delta G and glucose is oxidized positive delta G and glucose is reduced negative delta G and glucose is reduced The majority of...
4. (20 points) The reaction of pyruvate to acetyl-CoA and CO2 is the bridge reaction between glycolysis and the citric acid cycle. The carbon atoms in pyruvate are numbered and where they end up in the products are indicated CO0Θ 2 C=O + HS-CoA 3 CH3 Pyruvate S-COA 2C=O 3 CH3 Acetyl CoA Pyruvate dehydrogenase +1 CO2 a) Is C atom 1 in CO2 in a more reduced state or more oxidized state compared to its state in pyruvate? Why?...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
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