Question 1

A partial hydrolysis of a protein yielded the following fragments: Ser-Gly,Gly-Ala,Gly-Ala-Val,Val-Leu,Ala-Val.What is the sequence of amino acids in the polypeptide?

Accepted Answer

A)  Gly-Leu-Ser-Ala-Val
B)  Leu-Ala-Gly-Val-Ser
C)  Ser-Gly-Ala-Val-Leu
D)  Val-Ala-Gly-Ser-LeuE) None of the above
F) A) and B)

Question 2

Which two amino acids form the dipeptide below?

Accepted Answer

A)  asparagine and proline
B)  glycine and cysteine
C)  serine and alanine
D)  threonine and valineE) C) and D)
F) B) and D)

Question 3

What is the name of the following structure?

Accepted Answer

A)  cis-1-ethyl-2-chloroethane
B)  cis-1-chloro-1-butene
C)  trans-1-chloro-1-butene
D)  trans-1-chloro-2-ethylethaneE) B) and D)
F) None of the above

Question 4

To which family does this organic compound belong?

Accepted Answer

A)  alkane
B)  alkene
C)  alkyne
D)  areneE) A) and B)
F) A) and C)

Question 5

Cytosine is a base that occurs in ________ (DNA,RNA,DNA and RNA).

Accepted Answer

The answer of Cytosine is a base that occurs in...

Question 6

Which is an amino acid polar neutral side chain?

Accepted Answer

A)  -CH3
B)  -CH2OH
C)  -CH2CO2H
D)  -CH2CH2CH2CH2NH2E) B) and C)
F) All of the above

Question 7

Based on the structure of its side chains,the amino acid shown below can be classified as

Accepted Answer

A)  acidic.
B)  basic.
C)  neutral,non-polar.
D)  neutral,polar.E) C) and D)
F) B) and D)

Question 8

Based on the structure of its side chains,the amino acid shown below can be classified as

Accepted Answer

A)  acidic.
B)  basic.
C)  neutral,non-polar.
D)  neutral,polar.E) B) and C)
F) A) and D)

Question 9

Which structure is 1,4-dibromobenzene?

Accepted Answer

A)  structure I
B)  structure II
C)  structure III
D)  structure IVE) A) and D)
F) A) and C)

Question 10

Which of the following bases pairs with adenine in DNA?

Accepted Answer

A)  cytosine
B)  guanine
C)  thymine
D)  uracilE) A) and D)
F) B) and D)

Question 11

Identify the following amine base found in nucleic acids.

Accepted Answer

A)  Adenine (
A)  
B)  Cytosine (
C)  
C)  Thymine (T) 
D)  Uracil (U) E) B) and D)
F) None of the above

Question 12

What is the backbone of the nucleic acid constructed of?

Accepted Answer

A)  alternating sugar phosphate groups
B)  amine bases
C)  glucose polymers
D)  polyamidesE) B) and C)
F) A) and D)

Question 13

Is the following model of glucose in the α form or the β form?

Accepted Answer

A)  α form
B)  β formC) A) and B)
D) undefined

Question 14

Identify the functional group:

Accepted Answer

A)  alcohol
B)  amine
C)  amide
D)  esterE) C) and D)
F) B) and C)

Question 15

None of the listed compounds contains a ring.Which could have one carbon-carbon triple bond?

Accepted Answer

A)  C3H8
B)  C2H2
C)  C10H20
D)  All of theseE) B) and C)
F) A) and B)

Question 16

An alkyl group is named for the part of the alkane group that remains after a ________ is removed.

Accepted Answer

A)  C atom
B)  CH3 group
C)  CH2 group
D)  H atomE) All of the above
F) A) and B)

Question 17

What class of hydrocarbons has the general formula CnH2n?

Accepted Answer

A)  alkanes
B)  alkenes and cycloalkanes
C)  alkynes
D)  aromaticsE) B) and C)
F) A) and D)

Question 18

Peptide bonds that link amino acids together in proteins contain the ________ functional group.

Accepted Answer

A)  amine
B)  amide
C)  ester
D)  ketoneE) A) and C)
F) B) and D)

Question 19

To which family does this organic compound belong?

Accepted Answer

A)  amide
B)  amine
C)  carboxylic acid
D)  esterE) A) and B)
F) All of the above

Question 20

Benzene has a formula of

Accepted Answer

A)  C3H8.
B)  C6H10.
C)  C6H6.
D)  C8H16.E) B) and D)
F) C) and D)

Exam 23: Connections to Organic and Biological Chemistry

Benzene has a formula of

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To which family does this organic compound belong?

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Which structure is 1,4-dibromobenzene?

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Based on the structure of its side chains,the amino acid shown below can be classified as

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Based on the structure of its side chains,the amino acid shown below can be classified as

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What is the name of the following structure?

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Peptide bonds that link amino acids together in proteins contain the ________ functional group.

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Is the following model of glucose in the α form or the β form?

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An alkyl group is named for the part of the alkane group that remains after a ________ is removed.

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Which two amino acids form the dipeptide below?

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To which family does this organic compound belong?

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Identify the functional group:

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What is the backbone of the nucleic acid constructed of?

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Which of the following bases pairs with adenine in DNA?

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Which is an amino acid polar neutral side chain?

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What class of hydrocarbons has the general formula CnH2n?

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Cytosine is a base that occurs in ________ (DNA,RNA,DNA and RNA).

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None of the listed compounds contains a ring.Which could have one carbon-carbon triple bond?

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A partial hydrolysis of a protein yielded the following fragments: Ser-Gly,Gly-Ala,Gly-Ala-Val,Val-Leu,Ala-Val.What is the sequence of amino acids in the polypeptide?

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Identify the following amine base found in nucleic acids.

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What class of hydrocarbons has the general formula C_nH_2n?

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