Synthesis of soaps from triacylglycerols are via base catalyzed hydrolysis because:Select one:O a. They produce long chain carboxylates and glycerolO b. They produce compounds which can dissolve both polar and non polar particlesc. It produces a polar head and a non polar tailO d. All of the above

Asked : Correct option regarding synthesis of soaps from triglycerides

Answered: Synthesis of soaps from…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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8. The brick red color formed in a positive result of Benedict's test comes from A. the oxidation of copper ions B. the reduction of copper ion C. the reduction of carbonyl group D. the oxidation of carboxyl group E. the breakdown of glycosidic linkage 9. The following molecule is a но H Н-С—N — С H H H H-N-C -C-0-P-0-C -H H H H H A. triacylglycerol B. steroid hormone C. phospholipid D. o-6 fatty acid E. cholesterol 10. Which of the following statements about nucleic acid is INCORRECT? A. Coenzyme A is a protein, not nucleic acid B. NAD is an example of nucleic acid C. Adenine base is the same in ribonucleotide and deoxyribonucleotide D. Helix is an example of the secondary structure of nucleic acid E. Hydrogen bond can be found in DNA 11. The nucleoside consists of a D-deoxyribose and a cytosine base is called A. cytidine B. deoxycytidine C. deoxycytidylate D. deoxyribosylcytosine E. deoxyribosylcytidine
7
Although the first two carbons of fructose and glucose are identical in structure to DHAP and GADP (from glycolysis), DHAP and GADP equilibriate on their in solution to favor the ketone over the aldehyde, while fructose and glucose do not. Why? a)The larger size of the molecule sterically hinders the isomerization b)The larger sugars have more OH groups which hydrogen bond and disrupt isomerization c)The larger sugars cyclize, and there is no carbonyl to isomerize in the cyclic form d)The larger sugars cyclize, and in the cyclic form the hydrogen bonding is very strong e)The larger sugars are less soluble in water than the smaller sugars
1. You need 0.5 liter of a 0.1 M buffer for a biochemical reaction that you plan to perform at pH 2.0. On the shelf in your laboratory you have available phosphoric acid, and the amino acids aspartate, glycine, glutamate, tyrosine, and histidine (all you have available are the fully deprotonated forms of the molecules); these are the only buffer materials you have available. (The pKa values for these compounds are given below.) For phosphoric acid, pKal1 = 2.12, pKa2 = 7.21, and pKa3 = 12.32 For aspartate, pKaCOOH = 1.88, pKaNH3+ = 9.60, pKa sidechain = 3.65 For glycine, pKaCOOH = 2.34, pKaNH3+ = 9.60 For glutamate, pKaCOOH = 2.19, pKaNH3+ = 9.67, pKa sidechain = 4.25 For histidine, pKɑCOOH = 1.82, pKɑNH3+ = 9.17, pKa sidechain = 6.00 For tyrosine, pKaCOOH = 2.20, pKaNH3+ = 9.11, pKa sidechain = 10.07 a. Of these possible buffers, which is likely to yield the greatest resistance to pH change from the starting pH of 2.0, assuming that you were going to run a biochemical reaction that…
Which of the following la true about urease being a hydrolase enzyme? A. It catalyzes the degradetion of uracil B. It catalyzes the zynthesia C. It catalyzes the hydrolyais of urea D. It catalyzes the degradation of all amines of urea Enzyme are clasalfed Into how meny mejor groups and systematically named by how many numbere separated by dota? A. 4 groups and 6 numbera, гeaреctlvely C. 4 groupe and 4 numbera, тегресtively D. 5 groups and 2 numbera, reapectively B. 6 groups and 4 numbera, respectively Which of the following can cause the rate of enzyme activity to increase? I. Increasing the temperature starting from the optimum temperature Increasing the temperature until ít reaches the optimum temperature Decreazing the temperature atarting from the optimum temperature II. III. IV. Decreazing the temperature until it reaches the optimum temperature C. I and IV only D. II and IV only A. I and I only В. I and III only II only
3. b. If chymotrypsin is treated with disopropylfluorophosphate, catalysis cannot occur even in the presence of excess substrate concentration. Is this Inhibltion reversible or Irreversible?. Dilsopropylfluorophosphate Hyd
3. The reaction shown below is catalyzed along the pathway of glycolysis by an enzyme with the active site architecture shown. A. The enzyme has two Mg2+ ions, a lysine general base (deprotonated) and a glutamate general acid. In the box below, draw a plausible mechanism for this reaction, which has two formal steps with one intermediate between them (hint: one step uses the general acid and the other uses the general base.) O +(87 -00 11 R-00 00 00 + H₂O OH O Mg2+ Mg2+ Lys (general base) NH₂ OH Glu (general acid) enzyme active site
Downstream actions of enzymes generate C22:4 Δ 7,10,13,16 and C22:5 Δ 7,10,13,16,19, which are converted to final products C22:5 Δ 4,7,10,13,16 and C22:6 Δ 4,7,10,13,16,19 . a. Draw out the pathways described above. Provide accurate line drawings for each lipid described b. For each step, identify if an elongase and/or desaturase is used. If a desaturase is used, indicate the type (for example  9 desaturase). c. For each step indicate whether the parasite could be using an enzyme from the human host to complete the step. Briefly justify your choices. d. This pathway is being considered as a parasite-specific target for drugs (to treat parasitic infections). Which step would you choose to target and why?
What kind of catalysis is cysteine driving in this picture? S Los i fy R……—NHR N-H---S O. N-H H-N H-N. O Metal catalysis Covalent catalysis Base catalysis O Acid catalysis NHR²
These enzymes form covalent intermediates A. Papain B. Alkaline phosphatase C. Elastase D. All of the above This statement/s describe/s the function of TPP A. decarboxylation of alpha- keto acids B. oxidative decarboxylation of alpha- keto acids C. transketolation reactions D. All of the above True statement/s about intrinsic binding energy: A. More stable ES, slows the reaction B. Increasing the energy of ES is by either loss of entropy or destabilization of ES C. Smaller Ea between ES and ES* means faster the reaction D. All of the above
E* S P₁₁ P₂ E E-S₁ E-S₁-S₂ E-P₁-P₂ E*-P₂ E* Which of these 2 options represents a Sequential Ordered bisubstrate reaction? (label the other reaction as well) P₁ P₂ E-S₁-S₂ E-P₁-P₂ E-P₂ E is E E-S₁ S E◄
5.4. If 32P labeled (radioactive phosphate) inorganic phosphate were introduced to erythrocytes undergoing glycolysis which of the following molecules would you expect to detect 32P in Glycolytic intermediates? A. Fructose 1-6 bisphosphate B. 3-Phosphoglyceraldehyde C. Dihydroxyacetone phosphate D. 2-Phosphoglycerate E. 1-3 bisphosphoglycerate F. Phosphoenolpyruvate G. 3-Phosphoglycerate H. Pyruvate I. None of the above is it E?

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