Question 1

Identify the products of the reaction between 2-bromopentane and potassium ethoxide.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these choices are the major products of the reaction. 
A) a 
B) b 
C) c 
D) d 
E) None of these choices are the major products of the reaction. C

Question 2

Explain what is meant by "complementary" in the context of DNA strands.

Accepted Answer

Each nucleotide along a single strand of DNA has one of four possible bases,namely guanine (G),cytosine (C),adenine (A)and thymine (T).The double helix of DNA is held in place by hydrogen bonds between pairs of bases,one base being on each of the two strands.G always pairs with C and A always pairs with T.Thus,the base sequence on one strand determines the base sequence on the other strand,and the strands are "complementary" to each other.

Question 3

The backbone of protein molecules consists of repeating N-C-C-O units.

Accepted Answer

A) True 
 B)False  False

Question 4

What is the simplest molecular formula for
a.an alkane capable of having structural isomers?
b.an alkane capable of having optical isomers?
c.an alkene capable of having geometrical isomers?

Accepted Answer

The answer of What is the simplest molecular formula for
a.an...

Question 5

The compound shown below is responsible for the odor in rancid butter.Identify the functional group circled.

Accepted Answer

A) aldehyde 
B) ketone 
C) alcohol 
D) carboxylic acid 
E) carbonyl 
A) aldehyde 
B) ketone 
C) alcohol 
D) carboxylic acid 
E) carbonyl

Question 6

Urea carries waste nitrogen from the body in urine.Identify the functional group circled.

Accepted Answer

A) aldehyde 
B) alcohol 
C) carboxyl 
D) amine 
E) amide 
A) aldehyde 
B) alcohol 
C) carboxyl 
D) amine 
E) amide

Question 7

Select the correct name for the following compound.

Accepted Answer

A) 2-isopropyl-2,3,4-trimethylbutane 
B) 2-isopropyl-2,3-dimethylpentane 
C) 2,3,3,4-tetramethylhexane 
D) 1,1,2,2,3-pentamethylpentane 
E) None of these choices is correct. 
A) 2-isopropyl-2,3,4-trimethylbutane 
B) 2-isopropyl-2,3-dimethylpentane 
C) 2,3,3,4-tetramethylhexane 
D) 1,1,2,2,3-pentamethylpentane 
E) None of these choices is correct.

Question 8

Select the correct name for the following compound.

Accepted Answer

A) 3,4-diethyl-4-methyl-2-butanol 
B) 2,3-diethyl-4-pentanol 
C) 3,4-diethyl-2-pentanol 
D) 3-ethyl-4-methyl-2-hexanol 
E) 3-ethyl-4-methyl-2-hexanal 
A) 3,4-diethyl-4-methyl-2-butanol 
B) 2,3-diethyl-4-pentanol 
C) 3,4-diethyl-2-pentanol 
D) 3-ethyl-4-methyl-2-hexanol 
E) 3-ethyl-4-methyl-2-hexanal

Question 9

Identify the principal organic product when benzyl chloride reacts with aqueous sodium hydroxide.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these choices is correct. 
A) a 
B) b 
C) c 
D) d 
E) None of these choices is correct.

Question 10

Identify the organic product when 3-cylcobutyl-1-propanol reacts with excess potassium dichromate in sulfuric acid.(Hint: this is an oxidation reaction. )

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these choices is a major product of the reaction. 
A) a 
B) b 
C) c 
D) d 
E) None of these choices is a major product of the reaction.

Question 11

Identify the functional group circled.

Accepted Answer

A) aldehyde 
B) ketone 
C) alcohol 
D) ester 
E) carboxylic acid 
A) aldehyde 
B) ketone 
C) alcohol 
D) ester 
E) carboxylic acid

Question 12

a.Draw two different structures with the molecular formula C2H6O.
b.Name the functional group in each structure.
c.Which one will have the higher boiling point,and why?

Accepted Answer

a.H₃C- CH₂-OHH₃C-O- CH₃ b.alcohol

Question 13

Select the correct name for the following compound.

Accepted Answer

A) 1,1-dimethyl-1-cylcopentyl-2-pentane 
B) 1,1-dimethyl-2-hexene-cyclopentane 
C) 2-cyclopentyl-2-methyl-3-hexene 
D) 5,5-dimethyl-5-cyclopentyl-3-pentane 
E) 5,5-dimethyl-5-cyclopentyl-3-pentene 
A) 1,1-dimethyl-1-cylcopentyl-2-pentane 
B) 1,1-dimethyl-2-hexene-cyclopentane 
C) 2-cyclopentyl-2-methyl-3-hexene 
D) 5,5-dimethyl-5-cyclopentyl-3-pentane 
E) 5,5-dimethyl-5-cyclopentyl-3-pentene

Question 14

The protein amino acid sequence,the RNA base sequence,and the DNA base sequence are interrelated.Which of the following descriptions is correct?

Accepted Answer

A) The RNA base sequence determines the DNA base sequence which,in turn,determines the protein amino acid sequence. 
B) The DNA base sequence determines the RNA base sequence which,in turn,determines the protein amino acid sequence. 
C) The DNA base sequence determines the protein amino acid sequence which,in turn,determines the RNA base sequence. 
D) The RNA base sequence determines the protein amino acid sequence which,in turn,determines the DNA base sequence. 
E) None of these statements is correct. 
A) The RNA base sequence determines the DNA base sequence which,in turn,determines the protein amino acid sequence. 
B) The DNA base sequence determines the RNA base sequence which,in turn,determines the protein amino acid sequence. 
C) The DNA base sequence determines the protein amino acid sequence which,in turn,determines the RNA base sequence. 
D) The RNA base sequence determines the protein amino acid sequence which,in turn,determines the DNA base sequence. 
E) None of these statements is correct.

Question 15

Describe and contrast fibrous and globular proteins in terms of their amino acid composition,their structure and their function.

Accepted Answer

Fibrous proteins are composed of relativ

Question 16

Helical and sheet-like segments in proteins arise from

Accepted Answer

A) disulfide bridges. 
B) salt bridges. 
C) crosslinking via covalent bonds. 
D) dispersion forces within the protein's interior. 
E) hydrogen bonding. 
A) disulfide bridges. 
B) salt bridges. 
C) crosslinking via covalent bonds. 
D) dispersion forces within the protein's interior. 
E) hydrogen bonding.

Question 17

Given that each 3-base sequence in DNA is a "code word" for a particular amino acid,how many different code words are possible using a 3-base sequence and the bases available in DNA?

Accepted Answer

The answer of Given that each 3-base sequence in DNA...

Question 18

Identify the organic product for the reaction of 2-pentanol with sulfuric acid.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these choices is a major product of the reaction. 
A) a 
B) b 
C) c 
D) d 
E) None of these choices is a major product of the reaction.

Question 19

Identify the products of the following reaction.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) None of these pairs of compounds are formed in the reaction. 
A) a 
B) b 
C) c 
D) d 
E) None of these pairs of compounds are formed in the reaction.

Question 20

Amino acids in solution can undergo an internal acid-base reaction.

Accepted Answer

A) True 
 B)False

Exam 15: Organic Compounds and the Atomic Properties of Carbon

Identify the products of the reaction between 2-bromopentane and potassium ethoxide.

Explain what is meant by "complementary" in the context of DNA strands.

The backbone of protein molecules consists of repeating N-C-C-O units.

What is the simplest molecular formula for a.an alkane capable of having structural isomers? b.an alkane capable of having optical isomers? c.an alkene capable of having geometrical isomers?

The compound shown below is responsible for the odor in rancid butter.Identify the functional group circled.

Urea carries waste nitrogen from the body in urine.Identify the functional group circled.

Select the correct name for the following compound.

Select the correct name for the following compound.

Identify the principal organic product when benzyl chloride reacts with aqueous sodium hydroxide.

Identify the organic product when 3-cylcobutyl-1-propanol reacts with excess potassium dichromate in sulfuric acid.(Hint: this is an oxidation reaction. )

Identify the functional group circled.

a.Draw two different structures with the molecular formula C2H6O. b.Name the functional group in each structure. c.Which one will have the higher boiling point,and why?

Select the correct name for the following compound.

The protein amino acid sequence,the RNA base sequence,and the DNA base sequence are interrelated.Which of the following descriptions is correct?

Describe and contrast fibrous and globular proteins in terms of their amino acid composition,their structure and their function.

Helical and sheet-like segments in proteins arise from

Given that each 3-base sequence in DNA is a "code word" for a particular amino acid,how many different code words are possible using a 3-base sequence and the bases available in DNA?

Identify the organic product for the reaction of 2-pentanol with sulfuric acid.

Identify the products of the following reaction.

Amino acids in solution can undergo an internal acid-base reaction.

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids,solids,and Phase Changes

The Properties of Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

a.Draw two different structures with the molecular formula C₂H₆O. b.Name the functional group in each structure. c.Which one will have the higher boiling point,and why?