During fatty acid biosynthesis, the product detaches from fatty acid synthase complex when the chain length is 18 carbons. O True O False
Q: At normal to low blood glucose concentrations (l.e., roughly 110 mg/dl or less), the enzyme that is…
A: Enzymes are the type of protein that acts as biological catalysts. It speeds the rate of reaction…
Q: What would be the effect (promotes glycolysis or gluconeogenesis) of a sudden increase in the…
A: Glycolysis is a process where glucose is broken down to pyruvate to yield energy. The energy…
Q: Dihydrofolate reductase (DHFR) is capable of making one carbon moieties of various ates (i.e.,…
A: For cancer Methotrexate competitively inhibits dihydrofolate reductase, an enzyme participate in the…
Q: During fatty acid biosynthesis, acetyl ACP is the donor of the acetyl group. True False
A: Intermediates in fatty acid biosynthesis are attached to acyl carrier protein (ACP). Malonyl-CoA…
Q: (a) matic steps. Beginning with pyruvate, write with words the reaction for the first step,…
A: Glucanogenesis involve two bypass enzymatic steps by Pyruvate kinase . In Glycolysis the breakdown…
Q: Citrate carries acetyl CoA to the cytosol which is the site of fatty acid biosynthesis. O True O…
A: Fatty acid biosynthesis is the formation of fatty acids from acetyl-CoA and NADPH through the action…
Q: Lactate dehydrogenase O is needed for oxidative metabolism of glucose O only functions in muscle O…
A: In the metabolic process, the enzyme is extremely important. They enhance the rate of reaction by…
Q: In gluconeogenesis, the precursor of lactate is O Glucose O Phosphoenolpyruvate O Pyruvate O…
A: In gluconeogenesis the precursor for lactate is Pyruvate is correct. Pyruvate because from cori…
Q: Consider MYRISTIC ACID CH3-(CH2)12 - COOH A. Draw the acyl CoA derived from this fatty acid
A: Fatty acids are the components of lipids, which are esterified to a glycerol backbone to form lipid.…
Q: The initlial reactions in the biosynthesis of the amino acid aspartate at 298 Kare Carbamoyphosphate…
A: The biosynthesis of amino acids is based on several biosynthetic pathways. These pathways require…
Q: What would be the effect (promotes glycolysis or gluconeogenesis) of a sudden increase in the…
A: Glycolysis is a metabolic pathway in which 1 molecule of glucose is converted into 2 molecules of…
Q: full oxidation of 2 moles of glucos cose produce 36ATP O
A: Overall ATP production for glucose oxidation : C6H12O6 + 6CO2 + ADP +Pi -----> 6CO2 + 6H2O +ATP
Q: Suppose a mutant Fatty Acid synthase only synthesizes a FA 14 Carbons long. How many ATP will the…
A: Acetyl CoA is a hybrid molecule that is involved in a variety of metabolic processes in the body. As…
Q: A sample of glycogen from a patient with liver disease is incubated with Pi, normal glycogen…
A: Enzyme is defined as a biological catalyst that speeds up the rate of chemical reaction. All…
Q: In step 2 of the fatty acid biosynthesis, the acetyl-S-synthase condenses the acetyl group (L2) with…
A:
Q: The first step in liver's metabolism of fructose is: O a. cleavage by aldolase O b. phosphorylation…
A: Fructolysis refers to the metabolism of fructose from dietary sources. Fructose is almost…
Q: What form of reducing equivalent is required for fatty acid biosynthesis? O NADH O NADPH O FAD O…
A: Fatty acids are the fundamental units of fats. Fats are macronutrient and are required in large…
Q: two of the reduced electron carriers in the citric acid cycle come directly from a) isomerization…
A: Glucose is the main source of energy generation in living cells. Under aerobic conditions glucose…
Q: Which of the following statements is TRUE about fatty acid biosynthesis? Citrate carries malonyl CoA…
A: Triacylglycerol are the triesters of glycerol and fatty acids. Each molecule of glycerol is bonded…
Q: Glycogen de-branching enzymes carry out all of the following except hydrolyzing the alpha (1 4) bond…
A: j
Q: LACTAID s a dietary supplement containing lactase, an enzyme that helps individuals digest lactose…
A: Lactase is an enzyme which is produced by the pancreas. Lactase enzyme is responsible for break down…
Q: Acetyl CoA-ACP transacylase catalyzes the committed step in fatty acid biosynthesis. O True False
A: Fatty acid biosynthesis is the formation of fatty acids from acetyl CoA and NADPH through a number…
Q: The activated intermediate in the synthesis of polysaccharides is: O glucose 1-P O glucose 6-P O…
A: Polysaccharides, specifically cellulose and chitin, are the biosphere's most abundant carbon…
Q: Degradation of normal glycogen results to 97.2% glucose 1-phosphate and 7.2% glucose. Assuming a…
A: A disease is an abnormal state of an organism that disrupts biological processes. It might be acute,…
Q: The function of the enzyme acyl CoA synthetase is O ATP-dependent activation of fatty acids using…
A: During fatty acid oxidation the free fatty acids that enter the cytosol from the blood cannot pass…
Q: Citrate Synthase exists as a dimer but can catalyze the formation of only 1 citrate from Acetyl-CoA…
A: The formation of citrate from Acetyl- CoA, and Oxaloacetate is catalyzed by the enzyme citrate…
Q: During fatty acid biosynthesis, NADH is used as the reducing equivalent in the process. True False
A:
Q: The enzyme, glycogen phosphorylase, requires regulation for its maximal activity. O A. both…
A: Glycogen is a storage polysaccharide, which is stored mainly in muscle and liver cells. Glycogen…
Q: Which carbons of glucose will be incorporated into Palmitic acid by the Fatty acid Synthase?…
A: Fatty acid synthesis takes place when the acetyl CoA is gradually assembled into the growing chain…
Q: Phosphorylases and phosphatases catalyze the same reaction, i.e. the removal of a phosphate group. O…
A: The process of removal of a phosphate group from the molecular is called dephosphorylation. It is a…
Q: Animals cannot carry out a net conversion of even chain fatty acid carbon to glucose. However some…
A: Fatty acids are usually the building blocks of fats like the amino acids to the proteins. The…
Q: Isopentyl pyrophosphate (activated isoprene) undergoes cyclization during cholesterol biosynthesis.…
A: a. Cholesterol is the major sterol present in animal tissues. b. The major site for fatty acid…
Q: he degradation of glycogen is catalyzed by the enzyme phosphorylase and has AGO" equal to +3.1 kJ -…
A: Glucose is stored in liver and muscle cells in form of glycogen. At the time of glucose requirement,…
Q: All the reactions involved during gluconeogenesis occur in the cytosol except the one catalyzed by…
A: Gluconeogenesis is the process of synthesis of glucose from non Carbohydrate sources like aminoacids…
Q: Blucose are stored in the form of glycogen and any excess will be stored in the form of…
A: FALSE
Q: Optimum temp of amylase was identified by incubation of the amylase together with starch at various…
A: Optimum temperature: the temperature at which the enzyme shows maximum activity that can be…
Q: An a-1,6-glycosidic link is created by the: O branching enzyme. O glucose transferase. O glycogen…
A: An α-1,6-glycosidic bond is a covalent bond formed between the -OH group of carbon 1 of one sugar…
Q: True or False: Hydrolysis of ATP is more exergonic than oxidation of FADH2. O True O False
A: Please find your answer in step 2.
Q: Glucagon stimulates B-oxidation but inhibits fatty acid biosynthesis. O True O False
A: Lipogenesis : the formation of fats(fatty acids).
Q: Years ago there was interest in using uncouplers such as dinitrophenol asweight control agents.…
A: An uncoupler or uncoupling agent is a molecule that disrupts oxidative phosphorylation in…
Q: Fatty acids are mobilized from adipose tissue and travel in the blood to tissues that require extra…
A: Fatty acids are the simplest form of lipids present in both plants and animals. These molecules are…
Q: When the activated form of alcohol is used to synthesize glycerophospholipids, CDP-alcohol reacts…
A: Glycerophospholipids are fatty acids made up of diglycerides to which a phosphatidyl ester group is…
Q: Farnesyl pyrophosphate undergoes cyclization during cholesterol biosynthesis. O True O False
A: Farnesyl Pyrophosphate undergoes cyclization during cholesterol biosynthesis. This statement is…
Q: Lysine can be degraded to oxaloacetate, the latter a precursor for glucose biosynthesis. True O…
A: Amino acids are primarily required for the synthesis of muscles. Some amino acids can be synthesized…
Q: Cori cycle involves the transport of lactate from skeletal muscle to the liver for gluconeogenesis…
A: Glucose is the main source of energy in the body. Glucose obtained from carbohydrate metabolism is…
Q: Much of the regulation of gluconeogenesis is a result of the inhibition of glycolysis. O True O…
A: Gluconeogenesis is the metabolic process by which sugars (namely glucose)is produced for catabolic…
Q: Phosphoenolpyruvate serves as the precursor of the glycerol backbone during TAG biosynthesis. O True…
A: Phosphoenolpyruvate is an intermediate of the glycolytic pathway. Glycolysis occurs in the cytoplasm…
Q: Oxaloacetate carries acetyl CoA to the cytosol which is the site of fatty acid biosynthesis. O True…
A: Fatty acids are long chain carboxylic acid molecules. These are synthesized from acetyl CoA in the…
Q: Unsaturated fatty acid odd-numbered double bonds are handled by the reductase a. True b. False
A: Saturated fatty acid When the carbon atoms are joined together through single bonds then the fatty…
Q: Following the complete metabolism of a fatty acid briefly describe what subsequently happens to the…
A: Metabolism of fatty acids includes anabolism as well as catabolism. Anabolism of fatty acids…
Q: Malonyl CoA transacylase catalyzes the committed step in fatty acid biosynthesis. O True O False
A: ACC is the first committed step in the pathway of fatty acid synthesis.
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- Complete oxidation of a 16-carbon fatty acid can yield 129 molecules of ATP Study Figure 19.2 and determine how many ATP molecules would be generated if a 16-carbon fatly acid were metabolized solely by the TCA cycle, in the form of S acetyl-CoA molecules.GTP or ATP is produced during the conversion of isocitrate into ketoglutarate succinyl CoA into succinate fumarate into malate malate into oxaloacetateAfter the citric acid cycle reactions run _________, one six-carbon glucose molecule has been completely broken down to CO2. a. once b. twice c. six times d. twelve times
- Comparing Glycolysis Entry Points for Sucrose Sucrose can enter glycolysis by either of two routes: Sucrose phosphorylase: Sucrose + Pi fructose + glucose-1-phosphate Invertase: Sucrose + H20 fructose + glucose Would either of these reactions offer Jin advantage over the other In the preparation of hexoses fur entry into glycolysis?Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy charge. a. Would hexokinase be an R enzyme or a U enzyme? Would glutamine: PRPP amidotransferase, the second enzyme in purine biosynthesis, be an R enzyme or a U enzyme? b. If energy charge = 0.5: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low? c. If energy charge = 0.95: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low?Which of the following enzyme components of fatty acid synthase has/have a thiol group? A. ketoacyl-ACP reductase B. ketoacyl-ACP synthase C. enoyl- ACP reductase D. acyl carrier protein
- true or falseduring fatty acid biosynthesis, the product detaches from the fatty acid synthase complex when the chain length is 14 carbons.All of the following classes of enzymes catalyze the Fatty acid synthesis except a. synthetase b. Synthase c. Carboxylase d. DehydrgenThe complete oxidation of glucose 6-phosphate derived from free glucose yields 30 molecules ATP, whereas the complete oxidation of glucose 6- phosphate derived from glycogen yields 31 molecules of ATP. Account for this difference.
- Which of the following is NOT TRUE about fatty acid biosynthesis? A. 8 NADPH is used to produce palmitate. B. The growing fatty acid chain is elongated by the sequential addition of two-carbon units. C. The process is repeated 7 times to produce palmitate. D. The process occurs in the cytosol.In the beta oxidatiin pathway when the starting fatty acid contains n carbons what is the priduct of the enzyme acyl-CoA sythetase assume the starting saturated fatty acud contains n carbons and n is an even numberDuring glycolysis, fructose 1,6-biphosphate splits into two compounds: ______________ after reacting with aldolase and _____________
