What is Acetyl coenzyme A?
Question:
What is Acetyl coenzyme A?
Catabolism:
Catabolism is the degradation of nutrients and cell constituents. These reactions are catalyzed by a series of enzymes and result in a net exergonic effect.
Answer and Explanation: 1
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View this answerAcetyl coenzyme A, also called acetyl-CoA, is a common metabolic intermediate used by multiple degradative metabolic pathways in the cell. The CoA...
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Acetyl Coenzyme A (Acetyl-CoA): Formation, Structure & Synthesis
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Chapter 10 / Lesson 14
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Explore acetyl-CoA structure and formation. Understand acetyl coenzyme A. See where acetyl-CoA formation occurs and explore the acetyl-CoA synthesis process.
Related to this Question
- In what other molecule is energy stored during the formation of Acetyl coenzyme A?
- From whence is Acetyl coenzyme A derived?
- Which of these reactions uses acetyl co-A to produce carbon dioxide, ATP, NADH + H^+, and FADH2? a) Formation of acetyl co-A. b) Phosphorylation. c) Electron transport chain. d) Glycolysis. e) Krebs cycle.
- Which of the following molecules will lead to the production of the most ATP after being completely metabolized? (a) NADH. (b) lactic acid. (c) Two of the answers are correct. (d) Adenosine diphosphate. (e) An acetyl group.
- Which of the following has the most energy? a. One glucose molecule. b. 25 ATPs. c. 15 FADH2 d. 10 NADH2
- Along with ATP, NADH, and FADH, what molecule is also a byproduct of the citric acid cycle (or Krebs Cycle)?
- What are intracellular enzymes?
- Coenzyme FAD is derived from what? a) Vitamin A b) Vitamin B_2 c) Vitamin B_{12} d) Vitamin C
- What must pyruvic acid be converted to before it can enter the citric acid cycle? A. Acetyl Co-A B. Lactic acid C. Ethyl alcohol D. Citric acid
- What is the function of NADH and FADH_2 in cell respiration?
- Glycolysis of glucose produces _____ ATP. A) 2 B) 4 C) 6 D) 8
- What are extracellular enzymes?
- Which of the following does not occur in the mitochondria? A. glycolysis B. transformation of pyruvate into acetyl CoA C. citric acid (Krebs) cycle D. electron transport
- Which process is the synthesis of triglycerides? a. glycolysis b. liponeogenesis c. lipogenesis d. gluconeogenesis e. lipolysis
- Glycolysis requires: O Glucose O ATP O Acetyl CoA O NAD+ O Oxygen O All of the above O A, C, and E O A, B, and D O A, D, and E O All except C
- When pyruvate becomes acetyl CoA, what else happens? a) O2 is given off b) CO2 is given off c) NADH becomes NAD+ d) An ATP is made
- Which of the following options is correct? acts as the entrance molecule for fatty acids and ketone bodies in the Krebs cycle. a. Acetyl CoA b. Glucose-6-Phosphate e. Pyruvic Acid
- If I have 6 NADH and 5 FADH2, how many ATPs can I get from all these? 1. 28 2. 33 3. 10 4. 24
- Which of the following is an example of catabolism? (a) Glycolysis (b) Synthesis of ATP (c) Production of hormones (d) Maintaining cell structure
- (a) What molecule activates the fatty acid molecule in the cell? (b) How many ATP are required?
- Which of the following options is correct? The molecule by which blood glucose is converted into oxaloacetic acid to enter the Krebs cycle is a. Acetyl CoA b. Glucose-6-phosphate c. Pyruvic acid
- Glycolysis is the oxidation of glucose into pyruvate. If this occurs aerobically in the cytosol, How many ATP molecules are formed? a. 8 b. 6 c. 4 d. 2 e. None of the above.
- When oxygen enters a cell, cellular respiration begins(a.k.a. Aerobic respiration). Acetyl CoA is formed and can enter the citric acid cycle. Which of the following can form (be converted into) Acetyl CoA? a. Fatty acids b. Pyruvate c. Amino acids d. a, b
- What is another name for the Krebs Cycle?
- The anaerobic generation of ATP is from what? A. Muscle glycogen B. Blood glucose C. fatty acids D. Both A & B
- Which metabolic pathway produces the most ATP? A. The oxidation of one molecule of glucose. B. The anaerobic metabolism of one molecule of glucose. C. The oxidation of a triglyceride with each fatty acid contains 24 carbons.
- What are the products of Krebs cycle?
- Which of the following options is correct? The molecule by which glycogen can be utilized as fuel by liver or muscle cells is a. Acetyl CoA b. Glucose-6-phosphate c. Pyruvic acid
- Which of the following options is correct? The molecule into which glucose is converted to when it enters any body cell is a. Acetyl CoA b. Glucose-6-phosphate c. Pyruvic acid
- Which of the following options is correct? is formed from pyruvic acid under aerobic conditions. a. Acetyl CoA b. Glucose-6-Phosphate c. Pyruvic Acid
- What is the enzyme that digests fats?
- Which of the following options is correct? Most of the energy that enters the electron transport chain enters as a. ATP. b. acetyl CoA. c. glucose. d. CO_2. e. FADH_2 and NADH.
- When oxygen enters a cell, cellular respiration begins (a.k.a. Aerobic respiration). Acetyl CoA is formed and can enter the citric acid cycle. Which of the following can form (be converted into) Acetyl CoA? a. Fatty Acids b. Pyruvate c. Amino Acids d. a,
- ______ is a coenzyme that carries hydrogen atoms during coupled ______ reactions in the cell.
- What synthesis of ATP via flow of H+ ions through ATP synthase called?
- Given the glycolysis pathway from glucose to pyruvate and the reaction catalyzed by pyruvate dehydrogenase, where is ATP formed by this pathway? A. both B. mitochondria C. cytosol D. neither
- Two Acetyl Co A's enter the Tricarboxylic Acid Cycle (TCA cycle) back to back. Each entry to Acetyl CoA into the TCA yields how many ATP? a. 1 ATP b. 2 ATP's c. 3 ATP's d. 4 ATP's e. None of the above.
- When pyruvate is oxidized and enters the mitochondria, it forms acetyl-CoA. Acetyl CoA will build to _______ to form ______. a. Malate; Isocitrate. b. Oxaloacetate; Citrate. c. Fumarate; Succinyl CoA. d. Two of the above. e. None of the above.
- What is the name of the aerobic metabolic pathway that produces the most ATP molecules per molecule of glucose metabolized by a cell?
- (a) What is glycolysis? (b) What is the product of this process?
- Where do glycolysis, the Krebs cycle, and oxidative phosphorylation take place in a muscle cell?
- How many ATP are produced from 1 pyruvic acid molecule?
- Which of the following metabolic pathways is the least used means of ATP production in humans? (a) krebs cycle (b) fermentation (c) Oxidative Phosphorylation (d) Glycolysis.
- Lactic acid is the by-product of what energy system? A. ATP-PCr B. Anaerobic glycolysis C. Aerobic glycolysis D. Both B & C
- To form lactic acid from pyruvic acid it is necessary to have a) NAD b) FAD c) NADH d) FADH
- In addition to ATP, in what other molecule can energy be stored during glycolysis?
- What is the molecule that catalyzes reactions of chemical digestion?
- Glycolysis is the oxidation of glucose into pyruvate. If this occurs aerobically in the cytosol, How many ATP molecules are formed? a. 2 b. 4 c. 6 d. 8 e. none of the above
- What are the products of glycolysis?
- What is the enzyme that digests starch into maltose?
- Which molecule contains more chemical potential energy? a. Lactic acid b. Pyruvic acid
- What is the name of the molecule that is the primary (end) product of glycolysis?
- (a) What is a synapse? (b) What is a neurotransmitter?
- In glycolysis, how many pyruvate molecules are produced from one molecule of glucose?
- Indicate which energy system is being described. Produces 2 molecules of pyruvate per molecule of glucose: A. Glycolysis B. Aerobic Respiration
- When pyruvate is oxidized and enters the mitochondria, it forms acetyl CoA, Acetyl CoA will bind to _____ to form ______. a. Malate; Isocitrate. b. Fumarate; Succinyl; Succinyl CoA. c. Oxaloacetate; Citrate. d. Two of the above. e. None of the above.
- Which of the following options is correct? converts to lactic acid under anaerobic conditions. a. Acetyl CoA b. Glucose-6-phosphate c. Pyruvic acid
- Which of the following options is correct? Similar to amino acid alanine (except for one amino group), the molecule by which alanine can enter the catabolic pathway is a. Acetyl CoA b. Glucose-6-phosphate c. Pyruvic acid
- What is the name of the aerobic pathway that produces 2 ATP molecules and a total of 8 nucleotide-based molecules that store high-energy electrons?
- Which molecule contains more chemical potential energy? a. ATP b. ADP
- Which of the following molecules contains more chemical potential energy? a. Lactic acid b. Pyruvic acid
- At the end of glycolysis, what is glucose converted to? a. Citric Acid b. 10 NADH c. 6 CO2 d. Pyruvic acid e. 32 ATP
- What is the general structure of a triglyceride molecule?
- What molecule is the regulator of both the epinephrine and insulin response?
- This process is where NADH & FADH2 bring energy to phosphorylate ADP into ATP: ___
- Fill in the blank. Anaerobic glycolysis requires ______ to make ATP.
- Which of the following normally occurs regardless of whether or not oxygen (O2) is present? A. citric acid cycle B. fermentation C. glycolysis D. oxidative phosphorylation (chemiosmosis)
- Before entering the Citric Acid Cycle, what are two pyruvic acid converted in the intermediate step? a. 2 PGAL b. 2 Acetyl Co-A c. 2 Lactic Acid d. ADP e. Glucose
- Which enzyme assembles individual nucleotides into DNA or RNA molecules?
- If I have 6 NADH and 5 FADH2, how many ATPs can I get from all these? a. 28 b. 33 c. 10 d. 24
- What is the metabolic pathway of lactate?
- Pyruvate can be used for anaerobic ___ or aerobic respiration. a) glycogenesis b) glycerol c) fermentation d) respiration e) catabolic f) glycogen g) carbon h) pyruvate
- What process occurs within the inner mitochondrial membrane? a) Krebs cycle. b) Glycogenesis. c) Electron transport chain. d) Gluconeogenesis.
- The reactions of the Krebs cycle: A) take place in the cytosol of human cells. B) are important for the metabolism of carbohydrates but not other molecules. C) produce pyruvate and lactate as end products. D) generate ATP directly by substrate-level ph
- Glycolysis produces how many ATO molecules net for each glucose molecule processed?
- Nonessential amino acids can be made by cells in the body through a process called: a) Ribosomal amination b) Transamination c) acetyl amination d) chemiosmosis e) None of the above
- What enzyme is produced in the duodenum?
- What is the enzyme that digests starch?
- Glycolysis and glycogenolysis are ___ reactions. a) glycogenesis b) glycerol c) fermentation d) respiration e) catabolic f) glycogen g) carbon h) pyruvate
- What are precursors to macrophages?
- (a) What enzyme mobilizes free fatty acids? (b) What activates/inactivates it?
- In gluconeogenesis, glucose is synthesized from ___ and amino acids. a) glycogenesis b) glycerol c) fermentation d) respiration e) catabolic f) glycogen g) carbon h) pyruvate
- Pyruvate kinase is allosterically inhibited by: a) high concentrations of AMP b) high concentrations of ATP c) high concentrations of citrate d) low concentrations of acetyl-CoA e) none of the above
- In anaerobic conditions, glucose catabolism includes: a) Formation of acetyl co-A b) Electron transport chain c) Krebs cycle d) None of these e) Glycolysis f) All of these
- Identify the following: An enzyme that digests fats.
- What is the enzyme that is produced by the chief cells of the stomach?
- Glycolysis of glucose produces _____ NADH^+ H^+. A) 2 B) 4 C) 6 D) 8
- What is an organic substance that is required for an enzyme's function, often a vitamin?
- Fill in the words or phrases that best complete the sentence: is a coenzyme that carries hydrogen atoms during coupled reactions in the cell.
- All of the following takes place in the mitochondria except: a. Glycolysis. b. Krebs cycle. c. ETC. d. All of the above takes in the mitochondria.
- When blood glucose level is low, the liver can make glucose from amino acids and fats. What is this process called? A) glycogenolysis B) glycogenesis C) glycolysis D) gluconeogenesis
- Chemiosmosis a) involves the reactions of glycolysis b) involves the chemical reactions (electron transport) coupled to pumping hydrogen c) involves the reactions in the Kreb's cycle d) Involves the phosphorylation of H_2O e) Nucleosidase
- Where do the glycolysis citric acid cycle and oxidative phosphorylation located in the cell?
- When we exhale we expire CO2 as a byproduct of our cellular respiration. What are the specific enzymes that are responsible for catalyzing the production of CO2 in cellular metabolism. Use the Krebs Cycle to fully explain it.
- What is the name of the molecule that is the primary (starting) substrate for glycolysis?
- Which of the following molecules is not involved in cell-to-cell signaling? A. prostaglandins B. eicosanoids C. hormones D. cholesterol
- What is the name of the structure that produces ATP molecules aerobically within mitochondria? Where are these structures located within mitochondria?
- Oxidative phosphorylation (including the ETC) generates _____ ATP. A) 34 B) 28 C) 4 D) 2
- What is the primary role of the Citric Acid Cycle in the production of ATP?
- What is the primary role of Citric Acid Cycle in the production of ATP?
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