Homework Answers
Enzyme Hydrolase ( or Lactone hydrolase) catalyses the hydrolysis of esters (lactones). Hydrolysis of tetrahydro-2H-pyran-2-one gives 5-hydroxypentanoic acid.
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3. (3 points) Complete the following reactions and under the products for those reactions identify the...
3. Identify which reactants are amphoteric species in the following reactions. For those species, determine if...
3. Identify which reactants are amphoteric species in the following reactions. For those species, determine if the compound is also amphiprotic. Reaction Amphoteric Reactant Amphiprotic? (Y or N) HCO3 + HBr = H2CO3 + Br- 3 HCI + Al(OH)3 = AlCl3 + 3 H2O 2 HBr + ZnO = ZnBr2 + H2O
2. How enzyme reactions work Aa Aa 3 The following image is a simplified illustration of...
2. How enzyme reactions work Aa Aa 3 The following image is a simplified illustration of how enzymes catalyze reactions in cells. Click the boxes and correctly label the molecules in the image. Substrate DNA Product -Enzyme Coenzyme The table provides descriptions of what is occurring at steps A, B, and in the reaction. Review the descriptions, then choose the letter from the image that matches each description in the left-hand column of the table. Step Description Product(s) released; the...
Which of the following reactions are redox reactions? In those that are, identify the oxidation and...
Which of the following reactions are redox reactions? In those that are, identify the oxidation and reduction processes. (a) N2 + 3Mg = Mg3N2 (b) N2 + O2 → 2NO (c) 2N02-N2040 (d) SbFz + F2 SbF5b (e) 6HCl + As2O3 2AsCl3 + 3H2O (f) 2CO + 02 - 2002 (g) MnO2 + 4HCI MnCl2 + Cl2 + 2H,0 (h) (Cr,0,12- + 2(OH) = 2(CrO2]2- + H2O
3. Complete each of the following reactions. Draw the structure of the organic product or products...
3. Complete each of the following reactions. Draw the structure of the organic product or products in the space provided. Show stereochemistry if appropriate. (3 points each) SN2 reaction (a) (CH3)CHCH2Cl + NaCN Sn1 reaction (b) (CH3)CHCH,CI + NaCN (C) M Sn2 reaction ¢l + NaOH - ACH. E1 reaction (d) (CH3)3CCH,OH + HCI major product Ez reaction Cl + NaOH - LCH3 н Ereaction Cl + H20
5. From the following choices below, identify those that are the inputs and outputs of the...
5. From the following choices below, identify those that are the inputs and outputs of the Photosystem I and II light reactions. (Recall that inputs to chemical reactions are modified over the course of the reaction as they are converted into products. In other words, if something is required for a reaction to occur, and it does not remain in its original form when the reaction is complete, it is an input.) Put each item below to the appropriate category...
2. Complete the following reactions by drawing a structural formula of the products. Indicate the type...
2. Complete the following reactions by drawing a structural formula of the products. Indicate the type of reaction. Strong[O a. CH3CH2OH
Predict the product for the following reactions. 3. Predict the products for the following reactions. (10...
Predict the product for the following reactions.
3. Predict the products for the following reactions. (10 points) | | | EtOH MOON NaOH 2 c.worz ons gaidaug v a n wolltort NaOCH3 NH3 (2 eq.) CH3 H2O
3. Provide the intermediates/products for the following reactions. 3. Provide the intermediates/products for the following reactions...
3. Provide the
intermediates/products for the following reactions.
3. Provide the intermediates/products for the following reactions 1. BH3. THF 2. H20s NaOH, H2O CH3 1·LDA,-78°C, THF 4. H2O 1. Na CroO HSO, HO 2. SOCl2 Bn
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
4. (3 points) Complete the following reactions by showing all of the reactants necessary for the...
4. (3 points) Complete the following reactions by showing all of the reactants necessary for the transformations. Clearly identify stereochemistry where appropriate. Balance the reactions. ketone + (CH3)3P=0 ketone ketone
3. Identify which reactants are amphoteric species in the following reactions. For those species, determine if the compound is also amphiprotic. Reaction Amphoteric Reactant Amphiprotic? (Y or N) HCO3 + HBr = H2CO3 + Br- 3 HCI + Al(OH)3 = AlCl3 + 3 H2O 2 HBr + ZnO = ZnBr2 + H2O
2. How enzyme reactions work Aa Aa 3 The following image is a simplified illustration of how enzymes catalyze reactions in cells. Click the boxes and correctly label the molecules in the image. Substrate DNA Product -Enzyme Coenzyme The table provides descriptions of what is occurring at steps A, B, and in the reaction. Review the descriptions, then choose the letter from the image that matches each description in the left-hand column of the table. Step Description Product(s) released; the...
Which of the following reactions are redox reactions? In those that are, identify the oxidation and reduction processes. (a) N2 + 3Mg = Mg3N2 (b) N2 + O2 → 2NO (c) 2N02-N2040 (d) SbFz + F2 SbF5b (e) 6HCl + As2O3 2AsCl3 + 3H2O (f) 2CO + 02 - 2002 (g) MnO2 + 4HCI MnCl2 + Cl2 + 2H,0 (h) (Cr,0,12- + 2(OH) = 2(CrO2]2- + H2O
3. Complete each of the following reactions. Draw the structure of the organic product or products in the space provided. Show stereochemistry if appropriate. (3 points each) SN2 reaction (a) (CH3)CHCH2Cl + NaCN Sn1 reaction (b) (CH3)CHCH,CI + NaCN (C) M Sn2 reaction ¢l + NaOH - ACH. E1 reaction (d) (CH3)3CCH,OH + HCI major product Ez reaction Cl + NaOH - LCH3 н Ereaction Cl + H20
5. From the following choices below, identify those that are the inputs and outputs of the Photosystem I and II light reactions. (Recall that inputs to chemical reactions are modified over the course of the reaction as they are converted into products. In other words, if something is required for a reaction to occur, and it does not remain in its original form when the reaction is complete, it is an input.) Put each item below to the appropriate category...
2. Complete the following reactions by drawing a structural formula of the products. Indicate the type of reaction. Strong[O a. CH3CH2OH
Predict the product for the following reactions.
3. Predict the products for the following reactions. (10 points) | | | EtOH MOON NaOH 2 c.worz ons gaidaug v a n wolltort NaOCH3 NH3 (2 eq.) CH3 H2O
3. Provide the
intermediates/products for the following reactions.
3. Provide the intermediates/products for the following reactions 1. BH3. THF 2. H20s NaOH, H2O CH3 1·LDA,-78°C, THF 4. H2O 1. Na CroO HSO, HO 2. SOCl2 Bn
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
4. (3 points) Complete the following reactions by showing all of the reactants necessary for the transformations. Clearly identify stereochemistry where appropriate. Balance the reactions. ketone + (CH3)3P=0 ketone ketone
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