Question 1

Which of the following fatty acids has the highest melting point?

Accepted Answer

A) lauric acid 
B) oleic acid 
C) linoleic acid 
D) linolenic acid 
A) lauric acid 
B) oleic acid 
C) linoleic acid 
D) linolenic acid A

Question 2

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s).
Place asterisks:
lineatin

Accepted Answer

The answer of Instructions: Indicate by asterisks the stereogenic centers...

Question 3

In the sequence of steps shown below for fatty acid biosynthesis,how many cycles must be completed to produce the following species?

Accepted Answer

6

Question 4

How many passages through the b-oxidation pathway are required to completely degrade the following fatty acid?
CH3(CH2)12CO2H

Accepted Answer

Question 5

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s).
Place asterisks:
abietic acid

Accepted Answer

The answer of Instructions: Indicate by asterisks the stereogenic centers...

Question 6

Progesterone and progestin are examples of:

Accepted Answer

A) androgens 
B) estrogens 
C) progestins 
D) glucocorticoids 
A) androgens 
B) estrogens 
C) progestins 
D) glucocorticoids

Question 7

How many molecules of acetyl CoA are produced in the catabolism of stearic acid?

Accepted Answer

The answer of How many molecules of acetyl CoA are...

Question 8

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s).
Place asterisks:
linalool

Accepted Answer

The answer of Instructions: Indicate by asterisks the stereogenic centers...

Question 9

Which of the following is not true about cholesterol?

Accepted Answer

A) a steroid 
B) a precursor for other steroids 
C) produced from lanosterol 
D) geometry allows for ring-flips 
E) all of these are true 
A) a steroid 
B) a precursor for other steroids 
C) produced from lanosterol 
D) geometry allows for ring-flips 
E) all of these are true

Question 10

Which of the following fatty acids has the highest melting point?

Accepted Answer

A) lauric acid 
B) myristic acid 
C) palmitic acid 
D) stearic acid 
A) lauric acid 
B) myristic acid 
C) palmitic acid 
D) stearic acid

Question 11

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below.   
androsterone
Draw major product(s):
NaBH4,ethanol

Accepted Answer

Question 12

All of the following are byproducts of b-oxidation,except:

Accepted Answer

A) Acetyl CoA 
B) ADP 
C) NADH 
D) FADH2 
E) All of these are byproducts of b-oxidation. 
A) Acetyl CoA 
B) ADP 
C) NADH 
D) FADH2 
E) All of these are byproducts of b-oxidation.

Question 13

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below.   
androsterone
Draw major product(s):
CH3COCl,pyridine

Accepted Answer

Question 14

Cell membranes,which form an effective barrier to the passage of ions and other components into and out of the cell,are:

Accepted Answer

A) fatty acid esters 
B) tricacylglycerols 
C) lipid bilayers 
D) micelles 
A) fatty acid esters 
B) tricacylglycerols 
C) lipid bilayers 
D) micelles

Question 15

Draw the structure of the carbocation intermediate that results from the following step in terpene synthesis.

Accepted Answer

The answer of Draw the structure of the carbocation intermediate...

Question 16

Chemically,these are triacylglycerols,triesters of glycerol with three long-chain carboxylic acids.

Accepted Answer

A) waxes 
B) fats and oils 
C) fatty acids 
D) soaps 
A) waxes 
B) fats and oils 
C) fatty acids 
D) soaps

Question 17

The following sequence represents the steps in the biosynthesis of fatty acids.

Accepted Answer

The answer of The following sequence represents the steps in...

Question 18

All of the following describe b-oxidation,except:

Accepted Answer

A) Two-carbon units are eliminated during each cycle. 
B) The process employs NAD+ as an oxidant. 
C) The process is the primary route to fatty acid degradation. 
D) The 2-carbon groups are eliminated from the methyl end of the fatty acid. 
E) Fatty acids are attached to coenzyme A during the process. 
A) Two-carbon units are eliminated during each cycle. 
B) The process employs NAD+ as an oxidant. 
C) The process is the primary route to fatty acid degradation. 
D) The 2-carbon groups are eliminated from the methyl end of the fatty acid. 
E) Fatty acids are attached to coenzyme A during the process.

Question 19

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s).
Place asterisks:
a-santonin

Accepted Answer

The answer of Instructions: Indicate by asterisks the stereogenic centers...

Question 20

When soaps disperse in water,the long hydrocarbon tails cluster together in a hydrophobic ball,while the ionic heads on the surface of the cluster stick out into the water.These spherical clusters are called:

Accepted Answer

A) fatty acid esters 
B) triacylglycerols 
C) lipid bilayers 
D) micelles 
A) fatty acid esters 
B) triacylglycerols 
C) lipid bilayers 
D) micelles

Exam 23: Biomolecules: Lipids and Their Metabolism

Which of the following fatty acids has the highest melting point?

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s). Place asterisks: lineatin

In the sequence of steps shown below for fatty acid biosynthesis,how many cycles must be completed to produce the following species?

How many passages through the b-oxidation pathway are required to completely degrade the following fatty acid? CH3(CH2)12CO2H

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s). Place asterisks: abietic acid

Progesterone and progestin are examples of:

How many molecules of acetyl CoA are produced in the catabolism of stearic acid?

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s). Place asterisks: linalool

Which of the following is not true about cholesterol?

Which of the following fatty acids has the highest melting point?

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below. androsterone Draw major product(s): NaBH4,ethanol

All of the following are byproducts of b-oxidation,except:

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below. androsterone Draw major product(s): CH3COCl,pyridine

Cell membranes,which form an effective barrier to the passage of ions and other components into and out of the cell,are:

Draw the structure of the carbocation intermediate that results from the following step in terpene synthesis.

Chemically,these are triacylglycerols,triesters of glycerol with three long-chain carboxylic acids.

The following sequence represents the steps in the biosynthesis of fatty acids.

All of the following describe b-oxidation,except:

Instructions: Indicate by asterisks the stereogenic centers present in each of the indicated terpenes in the following question(s). Place asterisks: a-santonin

When soaps disperse in water,the long hydrocarbon tails cluster together in a hydrophobic ball,while the ionic heads on the surface of the cluster stick out into the water.These spherical clusters are called:

Structure and Bonding

Polar Covalent Bonds: Acids and Bases

Organic Compounds: Alkanes and Their Stereochemistry

Organic Compounds: Cycloalkanes and Their Stereochemistry

Stereochemistry at Tetrahedral Centers

An Overview of Organic Reactions

Alkenes and Alkynes

Reactions of Alkenes and Alkynes

Aromatic Compounds

Structure Determination: Mass Spectrometry,infrared Spectroscopy,and Ultraviolet Spectroscopy

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Organohalides: Nucleophilic Substitutions and Eliminations

Alcohols,phenols,and Thiols: Ethers and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution and Condensation Reactions

Amines and Heterocycles

Biomolecules: Amino Acids,peptides,and Proteins

Amino Acid Metabolism

Biomolecules: Carbohydrates

Carbohydrate Metabolism

Biomolecules: Nucleic Acids and Their Metabolism

Filters

How many passages through the b-oxidation pathway are required to completely degrade the following fatty acid? CH₃(CH₂)₁₂CO₂H

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below. androsterone Draw major product(s): NaBH₄,ethanol

Instructions: Draw the structures of the major organic product(s)you would expect to obtain from reaction of androsterone with the reagents listed below. androsterone Draw major product(s): CH₃COCl,pyridine