Concept explainers
Interpretation:
The mechanism for the synthesis of fatty
Concept Introduction:
Glycolysis: It is pathway which describes conversion of one molecule of glucose into two molecules of pyruvate. The series involves 10 reactions.
Fatty acid conversion to fatty
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Organic Chemistry (8th Edition)
- Explain the process and products in each of the three reactions in the proton–proton chain.arrow_forwardIdentify the organic functional group and reaction type for the following reaction. The reactant is a(n) - carboxylic acid hexose - Aldohexose - aldotetrose -deoxyhexose -carboxylic acid tetrose - ketohexose The product is a(n) - carboxylic acid tetrose - aldotetrose -alcohol hexose -aldohexose -carboxylic acid hexose - alcohol tetrose The reaction type is - hemiacetal formation -hydrolysis -oxidation( Benedict’s) -acetal formation -reduction( hydrogenation) - mutarotationarrow_forwardImidazoleglycerol‑phosphate dehydratase is an enzyme in the histine biosynthesis pathway. It catalyzes the E1 dehydration of D‑erthyro‑imidazole‑glycerol phosphate to imidazole acetol‑phosphate. This is a rare example of a biological E1 reaction, as most biological elimination reactions occur through E1cB instead. In this reaction, D‑erthyro‑imidazole‑glycerol phosphate is first protonated to form a good leaving group. Then, the leaving group is ejected to form the resonance‑stabilized carbocation shown. Draw curved arrows forming the most stable resonance structure to explain why this reaction goes through an E1 mechanism. Draw curved arrows to form the most stable resonance structure.arrow_forward
- Acetylcholine (ACh) is an important signaling molecule in the nervous system. After it transmits a signal, ACh is broken down by the enzyme acetylcholinesterase (AChE) in a reaction known as ACh hydrolysis. Which of the following best describes the effect AChE has on the hydrolysis of ACh? Group of answer choices AChE decreases the activation energy of ACh hydrolysis, increasing the rate of this reaction AChE increases the activiation energy of ACh hydrolysis, increasing its rate AChE decreases the activation energy of ACh hydrolysis, decreasing the rate of this reaction AChE increases the activiation energy of ACh hydrolysis, increasing the rate of this reactionarrow_forwardPredict the product(s) obtained when each of the following compounds is treated with a mixture of nitric acid and sulfuric acid. Select all that apply. 18.41d * Your answer is incorrect.arrow_forwardThe vitamin Niacin is used to form nicotinamide adenosine dinucleotide, which readily shuttles between its oxidized (NAD+) and reduced (NADH) forms. The latter serves as a cellular equivalent to NaBH4. The essential portions of the structures are shown below. Outline a mechanism for the cellular conversion of pyruvate to lactate. (Note: like NaBH4, NADH cannot reduce carboxylic acid carbonyls).arrow_forward
- The same E1–E2–E3 multienzyme structure found in the pyruvate dehydrogenase and the a-ketoglutarate dehydrogenase complexes is also used in the branched-chain a-ketoacid dehydrogenase complex, which participates in the catabolism of branched-chain amino acids. Draw the reaction product when the following substrate is acted on by the branched-chain a-keto acid dehydrogenase complex.arrow_forwardDraw the organic product for the following acid-catalyzed hydrolysis reaction. H2SO4, H20arrow_forward5)A certain aerobic organism is able to metabolize the followingglycolipid CH,OH H H OH H HO OH A.Draw the 2 resulting structures that would occur upon initial hydrolysis of the O-glycosidic bond.arrow_forward
- Some penicillins cannot be administered orally because their B-lactam is rapidly hydrolyzed by the acidic environment of the stomach. What product is formed in the following hydrolysis reaction? H H H R H30* ČOOHarrow_forwardCarbonic anhydrase facilitates the dissolution of carbon dioxide gas into water by catalyzing its hydration. Is the catalyzed reaction efficient? By what criterion do you state that?arrow_forwardProstaglandins are a class of eicosanoids, fatty acid derivatives with a variety of extremely potent actions on vertebrate tissues. They are responsible for producing fever and inflammation and its associated pain. Prostaglandins are derived from the 20- carbon fatty acid arachidonic acid in a reaction catalyzed by the enzyme prostaglandin endoperoxide synthase. This enzyme, a cyclooxygenase, uses oxygen to convert arachidonic acid to PGG2, the immediate precursor of many different prostaglandins. Rate of formation of PGG2 with 10 mg/ml ibuprofen (mM/min) Arachidonic acid (mM) Rate of formation of PGG2 (mM/min) 0.190 12.3 0.228 13.9 0.342 17.5 0.570 1.33 22.2 28.8 7.71 8.88 11.9 16.3 24.0 The kinetic data given in the table are for the reaction catalyzed by a mutant of prostaglandin endoperoxide synthase. Focusing here on the first two columns, determine the Vmax and Km of the enzyme. Vmax Km = mM/min mMarrow_forward
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