Question 1

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 2

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 these 
A) C3H8 
B) C2H2 
C) C10H20 
D) All of these

Question 3

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

Accepted Answer

A) amine 
B) amide 
C) ester 
D) ketone 
A) amine 
B) amide 
C) ester 
D) ketone

Question 4

Which of the following bases pairs with adenine in DNA?

Accepted Answer

A) cytosine 
B) guanine 
C) thymine 
D) uracil 
A) cytosine 
B) guanine 
C) thymine 
D) uracil

Question 5

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-Leu 
A) Gly-Leu-Ser-Ala-Val 
B) Leu-Ala-Gly-Val-Ser 
C) Ser-Gly-Ala-Val-Leu 
D) Val-Ala-Gly-Ser-Leu

Question 6

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

Question 7

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 atom 
A) C atom 
B) CH3 group 
C) CH2 group 
D) H atom

Question 8

Identify the functional group:

Accepted Answer

A) alcohol 
B) amine 
C) amide 
D) ester 
A) alcohol 
B) amine 
C) amide 
D) ester

Question 9

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

Question 10

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-ethylethane 
A) cis-1-ethyl-2-chloroethane 
B) cis-1-chloro-1-butene 
C) trans-1-chloro-1-butene 
D) trans-1-chloro-2-ethylethane

Question 11

What is the backbone of the nucleic acid constructed of?

Accepted Answer

A) alternating sugar phosphate groups 
B) amine bases 
C) glucose polymers 
D) polyamides 
A) alternating sugar phosphate groups 
B) amine bases 
C) glucose polymers 
D) polyamides

Question 12

Benzene has a formula of

Accepted Answer

A) C3H8. 
B) C6H10. 
C) C6H6. 
D) C8H16. 
A) C3H8. 
B) C6H10. 
C) C6H6. 
D) C8H16.

Question 13

To which family does this organic compound belong?

Accepted Answer

A) alkane 
B) alkene 
C) alkyne 
D) arene 
A) alkane 
B) alkene 
C) alkyne 
D) arene

Question 14

What class of hydrocarbons has the general formula CnH2n?

Accepted Answer

A) alkanes 
B) alkenes and cycloalkanes 
C) alkynes 
D) aromatics 
A) alkanes 
B) alkenes and cycloalkanes 
C) alkynes 
D) aromatics

Question 15

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

Accepted Answer

A) α form 
B) β form 
A) α form 
B) β form

Question 16

Which is an amino acid polar neutral side chain?

Accepted Answer

A) -CH3 
B) -CH2OH 
C) -CH2CO2H 
D) -CH2CH2CH2CH2NH2 
A) -CH3 
B) -CH2OH 
C) -CH2CO2H 
D) -CH2CH2CH2CH2NH2

Question 17

Which structure is 1,4-dibromobenzene?

Accepted Answer

A) structure I 
B) structure II 
C) structure III 
D) structure IV 
A) structure I 
B) structure II 
C) structure III 
D) structure IV

Question 18

Identify the following amine base found in nucleic acids.

Accepted Answer

A) Adenine (
A)  
B) Cytosine (
C)  
C) Thymine (T) 
D) Uracil (U) 
A) Adenine (
A)  
B) Cytosine (
C)  
C) Thymine (T) 
D) Uracil (U)

Question 19

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

Question 20

To which family does this organic compound belong?

Accepted Answer

A) amide 
B) amine 
C) carboxylic acid 
D) ester 
A) amide 
B) amine 
C) carboxylic acid 
D) ester

Exam 23: Connections to Organic and Biological Chemistry

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

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

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

Which of the following bases pairs with adenine in DNA?

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?

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

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

Identify the functional group:

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

What is the name of the following structure?

What is the backbone of the nucleic acid constructed of?

Benzene has a formula of

To which family does this organic compound belong?

What class of hydrocarbons has the general formula CnH2n?

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

Which is an amino acid polar neutral side chain?

Which structure is 1,4-dibromobenzene?

Identify the following amine base found in nucleic acids.

Which two amino acids form the dipeptide below?

To which family does this organic compound belong?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Filters

What class of hydrocarbons has the general formula C_nH_2n?