Why is it advantageous that breakdown of glycogen gives rise to glucose-6-phosphate rather than to glucose?
Q: What is the importance of glucose-6-phosphate for metabolism
A: The cellular processes take place in a stepwise manner with the help of several metabolic reactions…
Q: How can the synthesis and breakdown of fructose-2,6-bisphosphate be controlled independently?
A: Glycolysis is regulated in 3 steps and is 1.Glucose-6-phosphate formation 2.Fructose -6-phosphate to…
Q: The complete oxidation of glucose 6-phosphate derived from free glucose yields 30 molecules ATP,…
A: Glycolysis is the catabolic process of glucose into two molecules of pyruvate, ATP, and NADH. these…
Q: If glucose is such a readily available fuel, why is gluconeogenesis necessary?
A: Gluconeogenesis refers to the synthesis of glucose from non-carbohydrate substrates such as glycerol…
Q: Why is reciprocal regulation a key feature of glucose metabolism?
A: Carbohydrate metabolism is the whole of biochemical processes responsible for the metabolic…
Q: Which are the Two paths are available to this glucose 6-phosphate?
A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…
Q: In what condition and why is pyruvate converted to lactate?
A: Pyruvic acid is produced as a product of glycolysis, which is the anaerobic metabolism of glucose.…
Q: Which of the following does not correctly describe the isozymes of lactate dehydrogenase (LDH) in…
A: Lactate dehydrogenase (LDH) is an enzyme which catalyzes the conversion of lactate to pyruvate along…
Q: Why is acetyl phosphate considered an energy-richcompound while glucose 6-phosphate is not?
A: Energy-rich compounds are compounds having specific structural capabilities that result in a release…
Q: Which enzymes of the citric acid cycle are missing from the glyoxylate cycle?
A: The glyoxylate cycle utilizes five of the eight enzymes associated with the tricarboxylic acid…
Q: Why is it that sucrase cannot catalyze the formation of sucrose from glucose and fructose?
A: Sucrase enzymes are set on the brush border of the little internal organ.
Q: How does glucose binding to glycogen phosphorylase stimulate glycogen synthesis?
A: When there is an enormous amount of energy present, then the cell uses these to synthesize glycogen…
Q: Why can’t the reactions of the glycolytic pathway simply be run in reverse to synthesize glucose?
A: Metabolic pathways are defined as the set of chemical reactions occurring in the body. Metabolic…
Q: How many high-energy phosphates are generated or consumed in converting (a) 1 mole of glucose to…
A: The phosphate-phosphate bonds formed when compounds such as adenosine diphosphate (ADP) and…
Q: What does this important observation imply about the relation between the amino acid sequence of…
A: Protein function is directly related to the structure of that protein. A protein's specific shape…
Q: What properties of glucokinase allow it to phosphorylate glucose in the liver when the blood glucose…
A: Glucokinase is an enzyme that facilitates phosphorylation of glucose to glucose-6-phosphate.…
Q: A mature glycogen particle typically has 12 tiers of branches with 2 branches per tier and 13…
A: Glycogen is defined as a polysaccharide of glucose, which is multibranched and thus, is a source of…
Q: Explain why the amino acid tryptophan is both ketogenicand glucogenic.
A: The amino acid is the organic acid that contains alpha carboxyl group, alpha amino group, hydrogen…
Q: What is the key enzyme of glycolysis which catalyzes the production of fructose-1,6-bisphosphate?
A: Phosphofructokinase is the key enzyme of glycolysis that catalyzes the production of fructose 1,6…
Q: Why is oxaloacetate an intermediate in gluconeogenesis?
A: Glucose is the primary source of energy in the body. Glucose is broken down into pyruvate by…
Q: Why is it that only 2ATP molecules are required to store one glucose molecule as glycogen?
A: Glycogen is a homopolymer that is made up of repeated units of alpha-D-glucose and it is connected…
Q: Why does a young mouse maintained on a diet deficient in methionine fail to thrive unless choline is…
A: Methionine is an important antioxidant and prevents the body from radiation and also harmful…
Q: What is the effect of increasing the concentration of lactose in the action of the enzyme lactase?…
A: Lactase Lactase is a enzyme with digest lactose present in milk or in any solution. It break…
Q: How does fatty acid enter mitochondria via the acyl-carnitine/carnitine transporter?
A: The mitochondrial membrane is impermeable to fatty acids and so carnitine carrier system plays an…
Q: A glycogen polymer and an amylopectin polymer, each containing 100 monosaccharide subunits, are…
A: Amylopectin and glucogen are examples of branched polysaccharides.
Q: Why are the enzymes α-Amylase and α-glucosidase active in a patient with hyperglycemia or diabetes?…
A: Enzymes are biological catalysts that increase the rate of the reaction that occurs inside the…
Q: Why does the lack of glucose 6- phosphatase activity in the brain and muscle make good physiological…
A: Glucose is considered as an important energy source for all cells. It is required by the body in…
Q: Would you expect insulin to increase or decrease the activity of the enzyme ATP-citrate lyase?
A: The insulin is a peptide hormone produced by the beta cells of pancreatic islets. The insulin is…
Q: Which of the following is NOT an important precursor of glucose in animals when gluconeogenesis…
A: GLUCOSE 6 PHOSPHATE is not an important precursor of glucose in animals when gluconeogenesis occur.
Q: When some of the carbons of glutamate are converted to glycogen, what is the order of the following…
A: Glutamine act as a regulator for carbohydrate metabolism where it stimulates the hepatic and renal…
Q: What is the source of the energy needed to incorporate glucose residues into glycogen? How is it…
A: Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in…
Q: How are branch points normally introduced into glycogen?
A: Introduction: Glycogen is a multibranched polysaccharide of glucose that acts as an energy storage…
Q: What are the two unique enzymes of glyoxylate cycle and their reactions? What main role of the cycle…
A: The main purpose of the glyoxylate cycle is the use of acetyl-CoA for the production of glucogenic…
Q: Which of the following enzymes is considered as the principal enzyme for the regulation of…
A: Glycogen is storage form of glucose. It can be synthesized from glucose by glycogenesis.…
Q: What is the first step in the conversion of 3-phosphoglycerate into the fructose 6-phosphate?
A: Gluconeogenisis is the process of synthesis of glucose from non-carbohydrate sources such as…
Q: How might enzymes that remove amino groups from alanine and aspartate contribute to gluconeogenesis?
A: Metabolic pathways help to maintain the homeostasis of the body. It is made of biosynthetic pathways…
Q: Can a pregnant cocker spaniel (dog) synthesize prostaglandin E2 from the dietary glucose? Yes or No.…
A: Prostaglandin E2 is considered a hormone, which plays a key role to induce labor during pregnancy.…
Q: Is tetrahydrofolate involved in the synthesis of glycine?
A: Introduction: Tetrahydrofolate is a water-soluble vitamin that acts as a coenzyme in metabolic…
Q: What prevents the phosphatase activity of PP1 from always inhibiting glycogen degradation?
A: Introduction: Glycogen is stored in the liver and skeletal muscle. To maintain the glucose levels in…
Q: what effect would an increase in glucose typically have on the activity of glycogen synthase
A: Effect of glucose-6-phosphate on glycogen synthase activity in the liver. Glucose-6-phosphate is an…
Q: What are three heterotropic allosteric regulators of glycogen phosphorylase? Describe their effects.
A: One of the phosphorylase enzymes is Glycogen Phosphatase. Glycogen phosphorylase releases…
Q: Gluconeogenesis takes place during intense exercise, which seems counterintuitive. Why would an…
A: Introduction: The chemical reactions that occur inside the living body for the formation of energy…
Q: Why are the symptoms of carnitine palmitoyl transferase II deficiency more severe during fasting?
A: Carnitine palmitoyltransferase II (CPT II) deficiency is a condition that prevents the body from…
Q: What is the role of biotin in gluconeogenesis?
A: Gluconeogenisis is the metabolic process in which glucose was synthesized from non-carbohydrate…
Q: All of the following serve as substrates for gluconeogenesis, except A. Glucogenic amino acids B.…
A: In gluconeogenesis, glucose or glycogen are synthesized from non carbohydrate substances.
Q: How is UTP used in the formation of glycogen from glucose?
A: Glycogenesis is the pathway through which glycogen is produced from glucose to store it in the liver…
Why is it advantageous that breakdown of glycogen gives rise to glucose-6-phosphate rather than to glucose?
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- How does glucose binding to glycogen phosphorylase stimulate glycogen synthesis?What properties of glucokinase allow it to phosphorylate glucose in the liver when the blood glucose concentration is higher than normal?what effect would an increase in glucose typically have on the activity of glycogen synthase