Question 1

Which type of lipid gives these products on saponification? HOCH2CHOHCH2OH RCO2¯ R'CO2¯ PO43¯  HOCH2CH2NH2

Accepted Answer

A) Fat 
B) Wax 
C) Lecithin 
D) Cephalin 
E) Plasmalogen 
A) Fat 
B) Wax 
C) Lecithin 
D) Cephalin 
E) Plasmalogen

Question 2

Which of these reagents would not react with oleic acid?

Accepted Answer

A) H2,Ni 
B) PBr3 
C) CH3MgI 
D) NH3/H2O 
E) NaBH4 
A) H2,Ni 
B) PBr3 
C) CH3MgI 
D) NH3/H2O 
E) NaBH4

Question 3

Which of the following statements regarding triacylglycerols is true?

Accepted Answer

A) They form micelles when mixed with water. 
B) They are liquid if they are unsaturated. 
C) They are solid if they have alkyne bonds. 
D) They can be used to wash dirty dishes 
E) They are soluble in water. 
A) They form micelles when mixed with water. 
B) They are liquid if they are unsaturated. 
C) They are solid if they have alkyne bonds. 
D) They can be used to wash dirty dishes 
E) They are soluble in water.

Question 4

Which of these is most likely to have properties resembling natural waxes?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 5

Some prostaglandins induce inflammation.Aspirin is an anti-inflammatory drug because:

Accepted Answer

A) Apparently it acetylates the enzyme cyclooxygenase. 
B) It reacts with arachidonic acid preventing the synthesis of inflammatory prostaglandins. 
C) It blocks the synthesis of the catalytic enzyme leading to inflammatory prostaglandins. 
D) It reacts with inflammatory prostaglandins preventing them for being active. 
E) It renders the arachidonic acid inactive in the synthesis of prostaglandins. 
A) Apparently it acetylates the enzyme cyclooxygenase. 
B) It reacts with arachidonic acid preventing the synthesis of inflammatory prostaglandins. 
C) It blocks the synthesis of the catalytic enzyme leading to inflammatory prostaglandins. 
D) It reacts with inflammatory prostaglandins preventing them for being active. 
E) It renders the arachidonic acid inactive in the synthesis of prostaglandins.

Question 6

The characteristic odor of rancid butter is attributed to ___.

Accepted Answer

the releas

Question 7

What product would you expect when progesterone is treated with one molar equivalent of hydrogen in the presence of a platinum catalyst?

Accepted Answer

A) 5$\infty$-Pregnane-3,20-dione 
B) 5$\beta$-Pregnane-3,20-dione 
C) 5$\infty$-Estrane-3,20-dione 
D) 5$\beta$-Estrane-3,20-dione 
E) 5$\infty$-Androstane-3,20-dione 
A) 5$\infty$-Pregnane-3,20-dione 
B) 5$\beta$-Pregnane-3,20-dione 
C) 5$\infty$-Estrane-3,20-dione 
D) 5$\beta$-Estrane-3,20-dione 
E) 5$\infty$-Androstane-3,20-dione

Question 8

Olestra,a synthetic fat substitute,contributes nothing to the caloric value of foods prepared with it,because it passes through the body without being digested.Why are the lipases,responsible for facilitating normal fat hydrolysis,unable to facilitate the hydrolysis of olestra?

Accepted Answer

In order for a lipase to catalyze hydrol

Question 9

Which fatty acid is not likely to occur commonly in natural sources?

Accepted Answer

A) (Z)-11-Tetradecenoic acid 
B) (Z)-9-Hexadecenoic acid 
C) Hexadecanoic acid 
D) (9Z,12Z)-9,12-octadecadienoic acid 
E) (Z)-9-pentadecenoic acid 
A) (Z)-11-Tetradecenoic acid 
B) (Z)-9-Hexadecenoic acid 
C) Hexadecanoic acid 
D) (9Z,12Z)-9,12-octadecadienoic acid 
E) (Z)-9-pentadecenoic acid

Question 10

Draw representative structures for:
a)a fat
b)a prostaglandin
c)a steroid
d)a terpene

Accepted Answer

The answer of Draw representative structures for:
a)a fat
b)a prostaglandin
c)a steroid
d)a...

Question 11

What of the following salts are useful for washing fatty stains in hard water?

Accepted Answer

A) II and V 
B) I,II and V 
C) I,III and IV 
D) I,II,III,and IV 
E) I,II,III,IV and V 
A) II and V 
B) I,II and V 
C) I,III and IV 
D) I,II,III,and IV 
E) I,II,III,IV and V

Question 12

In $\beta$-carotene,how many tail-to-tail links of isoprene units are there?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) More than 4 
A) 1 
B) 2 
C) 3 
D) 4 
E) More than 4

Question 13

d-Galactose is an example of a class of compounds that can be formed during the hydrolysis of:

Accepted Answer

A) Sphingomyelins 
B) Cerebrosides 
C) Plasmalogens 
D) Waxes 
E) Both plasmalogens and waxes 
A) Sphingomyelins 
B) Cerebrosides 
C) Plasmalogens 
D) Waxes 
E) Both plasmalogens and waxes

Question 14

What of the following is a (are)correct structure(s)for prostaglandin(s)?

Accepted Answer

A) I and II 
B) I,III and IV 
C) III 
D) II 
E) I and IV 
A) I and II 
B) I,III and IV 
C) III 
D) II 
E) I and IV

Question 15

Which is the proper representation of three successive isoprene units in natural rubber?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 16

Which compound is a sesquiterpene?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 17

Show the products you would expect to obtain from reaction of cholic acid with these reagents:
a)C2H5OH,HCl
b)PCC,CH2Cl2
c)BH3 in THF,then H3O+

Accepted Answer

Question 18

What products would be obtained from the ozonolysis of zingiberine,found in the oil of ginger?

Accepted Answer

The answer of What products would be obtained from the...

Question 19

Which is the repeating unit of natural rubber?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 20

What is likely to be a natural fatty acid?

Accepted Answer

A) Compounds I and IV 
B) Only compound III 
C) Compounds II and III 
D) Compounds IV and V 
E) Only compound II 
A) Compounds I and IV 
B) Only compound III 
C) Compounds II and III 
D) Compounds IV and V 
E) Only compound II

Exam 23: Lipids

Which type of lipid gives these products on saponification? HOCH2CHOHCH2OH RCO2¯ R'CO2¯ PO43¯ HOCH2CH2NH2

Which of these reagents would not react with oleic acid?

Which of the following statements regarding triacylglycerols is true?

Which of these is most likely to have properties resembling natural waxes?

Some prostaglandins induce inflammation.Aspirin is an anti-inflammatory drug because:

The characteristic odor of rancid butter is attributed to ___.

What product would you expect when progesterone is treated with one molar equivalent of hydrogen in the presence of a platinum catalyst?

Olestra,a synthetic fat substitute,contributes nothing to the caloric value of foods prepared with it,because it passes through the body without being digested.Why are the lipases,responsible for facilitating normal fat hydrolysis,unable to facilitate the hydrolysis of olestra?

Which fatty acid is not likely to occur commonly in natural sources?

Draw representative structures for: a)a fat b)a prostaglandin c)a steroid d)a terpene

What of the following salts are useful for washing fatty stains in hard water?

In β\betaβ -carotene,how many tail-to-tail links of isoprene units are there?

d-Galactose is an example of a class of compounds that can be formed during the hydrolysis of:

What of the following is a (are)correct structure(s)for prostaglandin(s)?

Which is the proper representation of three successive isoprene units in natural rubber?

Which compound is a sesquiterpene?

Show the products you would expect to obtain from reaction of cholic acid with these reagents: a)C2H5OH,HCl b)PCC,CH2Cl2 c)BH3 in THF,then H3O+

What products would be obtained from the ozonolysis of zingiberine,found in the oil of ginger?

Which is the repeating unit of natural rubber?

What is likely to be a natural fatty acid?

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which type of lipid gives these products on saponification? HOCH₂CHOHCH₂OH RCO₂¯ R'CO₂¯ PO₄³¯ HOCH₂CH₂NH₂

In $\beta$ -carotene,how many tail-to-tail links of isoprene units are there? $In \beta -carotene,how many tail-to-tail links of isoprene units are there?$

Show the products you would expect to obtain from reaction of cholic acid with these reagents: a)C₂H₅OH,HCl b)PCC,CH₂Cl₂ c)BH₃ in THF,then H₃O⁺