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

F) B) and C)
G) B) and D)

Correct Answer

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Select the correct name for the following compound. Select the correct name for the following compound. 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

F) B) and D)
G) A) and D)

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The compound shown below is responsible for the odor in rancid butter.Identify the functional group circled. The compound shown below is responsible for the odor in rancid butter.Identify the functional group circled. A) aldehyde B) ketone C) alcohol D) carboxylic acid E) carbonyl


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

F) A) and B)
G) B) and C)

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

F) A) and E)
G) B) and D)

Correct Answer

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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?

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

A) True
B) False

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Select the correct name for the following compound. Select the correct name for the following compound. 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.

F) A) and D)
G) A) and C)

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

F) A) and E)
G) None of the above

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C

Helical and sheet-like segments in proteins arise from


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

F) B) and C)
G) A) and B)

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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?

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a.H3C- CH2-OHH3C-O- CH3
b.alcohol ...

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

F) A) and C)
G) A) and D)

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Select the correct name for the following compound. Select the correct name for the following compound. 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

F) A) and B)
G) A) and C)

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

F) A) and D)
G) C) and D)

Correct Answer

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Identify the functional group circled. Identify the functional group circled. A) aldehyde B) ketone C) alcohol D) ester E) carboxylic acid


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

F) C) and D)
G) A) and D)

Correct Answer

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Urea carries waste nitrogen from the body in urine.Identify the functional group circled. Urea carries waste nitrogen from the body in urine.Identify the functional group circled. A) aldehyde B) alcohol C) carboxyl D) amine E) amide


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

F) A) and D)
G) C) and E)

Correct Answer

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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?

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Identify the products of the following reaction. Identify the products of the following reaction. 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.

F) B) and C)
G) D) and E)

Correct Answer

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

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Fibrous proteins are composed of relativ...

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

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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.

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

A) True
B) False

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False

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