Homework Answers
The concept used to solve the given problem is based on the knowledge of sphingosines or sphingomyelins.
Sphingomyelins are the sphingolipids found in the cell membrane and myelin sheath of nerve cells. It is composed of sphingosine molecule, a fatty acid and the phosphorylcholine which combines together with the chemical bond to form the sphingomyelin.
The structure of molecule B does not contain sphingosine.
Similarly, phosphatidylcholine does not contain sphingosine.
Sphingosine are generally consisting of 18 carbon chain with amino alcohol group attached to an unsaturated hydrocarbon chain.
Sphingosine consists of the ammonium group as the end group which attack on the carbonyl carbon of the fatty acid to form amide derivative of sphingosine.
The reaction of sphingosine with the fatty acid is as follows:
The phosphoryl choline which have the active phosphate group attack on the terminal oxygen atom of the sphingosine derivative. This attack of the phosphate group forms the phosphoester bond which forms sphingomyelins with the release of water as by product.
The reaction of phosphoryl choline and sphingosine derivative are as follows:
The molecules which contains sphingosine are Molecule A, Molecule C and sphingomyelins.
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Which of the following molecules contain sphingosine? Select all that apply.
Which of the following molecules contain at least one double bond that has E stereochemistry? Select...
Which of the following molecules contain at least one double bond that has E stereochemistry? Select all that apply. HC OH ОН Which of the following molecules contain at least one double bond that has Z stereochemistry? Select all that apply. HzC OH NH2
Which of the following molecules can be polar? (select all that apply.) Which of the following...
Which of the following molecules can be polar? (select all that
apply.)
Which of the following molecules can be polar? cis-CHBr=CHBr CH_2=CH_2 cis-CHCI=CHCI trans-CHCI=CHCI none of the above Which of the following molecules can be chiral? cis-CHBr=CHBr CH_2=CH_2 cis-CHCI=CHCI trans-C HCI=CHCI none of the above
chemistry, select all apply. which of the following molecules are polar? BF, CH2Cl2, ...
chemistry, select all apply. which of the following molecules are polar? BF, CH2Cl2, ...
Which of these molecules contain a pi bond? Check all that apply. H2O O3 HCN CO32-...
Which of these molecules contain a pi bond? Check all that apply. H2O O3 HCN CO32- Which ones contain a delocalized pi bond? Check all that apply. H2O O3 HCN CO32-
Which of the following is a characteristic of aldehydes? Select all that apply: a. Aldehydes contain...
Which of the following is a characteristic of aldehydes? Select all that apply: a. Aldehydes contain an oxygen atom. b. Aldehydes have lower boiling points than the corresponding alkanes. c. Aldehydes contain an oxygen atom bound directly to a hydrogen atom. d. The carbonyl group in an aldehyde must be attached to a hydrogen atom.
SELECT ALL THAT APPLY. Which of the following atoms or molecules help comprise the heme center...
SELECT ALL THAT APPLY. Which of the following atoms or molecules help comprise the heme center of the proteins myoglobin and hemoglobin? A. Nitrogen B. Proximal Histidine C. Distal Histidine D. Oxygen
Which of the following pairs of molecules are structural isomers? Select all that apply. 2-methylpentane and...
Which of the following pairs of molecules are structural isomers? Select all that apply. 2-methylpentane and 2-methylhexane 2,3-dimethylbutane and 2-methylpentane 2-methylpentane and 3-methylpentane hexane and 2-methylhexane
Which of the following molecules contain at least one double bond that is neither E nor...
Which of the following molecules contain at least one double bond that is neither E nor Z stereochemistry? Select all that apply. ØE I Ohșc_OH ci NH, 0 он
Predict which molecules are polar. Select all that apply. AsF3 IOF5 CF4 CH2CI2
Predict which molecules are polar. Select all that apply. AsF3 IOF5 CF4 CH2CI2
help! Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.)...
help!
Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.) Sucrose Fructose Lactose Starch Cellulose Question 2 (1.25 points) Which of the following functional groups in a carbohydrate are able to be oxidized to carboxylic acids? (Select all that apply.) Alcohols Ketones that are rearranged in solution. Aldehydes Ketones that are not rearranged in solution. Question 3 (1.25 points) Which of the following carbohydrates were reducing sugars? (Select all that apply.) Sucrose Cellulose Starch...
Which of the following molecules contain at least one double bond that has E stereochemistry? Select all that apply. HC OH ОН Which of the following molecules contain at least one double bond that has Z stereochemistry? Select all that apply. HzC OH NH2
Which of the following molecules can be polar? (select all that
apply.)
Which of the following molecules can be polar? cis-CHBr=CHBr CH_2=CH_2 cis-CHCI=CHCI trans-CHCI=CHCI none of the above Which of the following molecules can be chiral? cis-CHBr=CHBr CH_2=CH_2 cis-CHCI=CHCI trans-C HCI=CHCI none of the above
Which of these molecules contain a pi bond? Check all that apply. H2O O3 HCN CO32- Which ones contain a delocalized pi bond? Check all that apply. H2O O3 HCN CO32-
Which of the following molecules contain at least one double bond that is neither E nor Z stereochemistry? Select all that apply. ØE I Ohșc_OH ci NH, 0 он
Predict which molecules are polar. Select all that apply. AsF3 IOF5 CF4 CH2CI2
help!
Question 1 (1.25 points) Which of the following carbohydrates contain ketohexoses? (Select all that apply.) Sucrose Fructose Lactose Starch Cellulose Question 2 (1.25 points) Which of the following functional groups in a carbohydrate are able to be oxidized to carboxylic acids? (Select all that apply.) Alcohols Ketones that are rearranged in solution. Aldehydes Ketones that are not rearranged in solution. Question 3 (1.25 points) Which of the following carbohydrates were reducing sugars? (Select all that apply.) Sucrose Cellulose Starch...
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