Question 1

In the protein,Arg- Pro- Leu- Gln,which amino acid contains the C-terminal group?

Accepted Answer

A) proline 
B) leucine 
C) glutamine 
D) arginine 
A) proline 
B) leucine 
C) glutamine 
D) arginine

Question 2

How many isomers are there for C5H12?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
A) 3 
B) 4 
C) 5 
D) 6

Question 3

Identify the amino acid shown below.

Accepted Answer

A) Alanine (Ala) 
B) Glycine (Gly) 
C) Isoleucine (Ile) 
D) Leucine (Leu) 
A) Alanine (Ala) 
B) Glycine (Gly) 
C) Isoleucine (Ile) 
D) Leucine (Leu)

Question 4

Which reaction is not characteristic of aromatic compounds?

Accepted Answer

A) addition 
B) halogenation 
C) nitration 
D) sulfonation 
A) addition 
B) halogenation 
C) nitration 
D) sulfonation

Question 5

Identify the amino acid shown below.

Accepted Answer

A) Asparagine (Asn) 
B) Aspartic acid (Asp) 
C) Glutamic acid (Glu) 
D) Glutamine (Gln) 
A) Asparagine (Asn) 
B) Aspartic acid (Asp) 
C) Glutamic acid (Glu) 
D) Glutamine (Gln)

Question 6

Which is an amino acid basic side chain?

Accepted Answer

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

Question 7

The alkane,3-ethyl-3-methylhexane contains ________ carbon atoms and ________ hydrogen atoms.

Accepted Answer

The answer of The alkane,3-ethyl-3-methylhexane contains ________ carbon atoms and...

Question 8

How many alpha amino acids commonly make up the different proteins found in humans?

Accepted Answer

A) 4 
B) 20 
C) 100 
D) millions 
A) 4 
B) 20 
C) 100 
D) millions

Question 9

Identify the amino acid shown below.

Accepted Answer

A) Methionine (Met) 
B) Phenylalanine (Phe) 
C) Proline (Pro) 
D) Tryptophan (Trp) 
A) Methionine (Met) 
B) Phenylalanine (Phe) 
C) Proline (Pro) 
D) Tryptophan (Trp)

Question 10

Which is an amino acid nonpolar neutral side chain?

Accepted Answer

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

Question 11

How many ether isomers have the formula C4H10O?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 12

Which one of the structures below is different from the other three?

Accepted Answer

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

Question 13

Shown are ball-and-stick (1)and space-filling (2)models of methane.  
-What hybrid orbitals are used by carbon to form covalent bonds with hydrogen?

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
A) sp 
B) sp2 
C) sp3 
D) sp3d

Question 14

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 15

Which of the following does not contain a carbonyl group?

Accepted Answer

A) an alcohol 
B) an aldehyde 
C) an amide 
D) an ester 
A) an alcohol 
B) an aldehyde 
C) an amide 
D) an ester

Question 16

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 17

Which one of the following behaves like a base?

Accepted Answer

A) CH3CONHCH3 
B) (CH3)2NH 
C) C2H5CONHCH3 
D) All of these are bases. 
A) CH3CONHCH3 
B) (CH3)2NH 
C) C2H5CONHCH3 
D) All of these are bases.

Question 18

-Which of the compounds shown above is correctly identified by the name 3,3-Dimethylpropane?

Accepted Answer

A) all 
B) none 
C) only (4) 
D) only (1)and (4) 
A) all 
B) none 
C) only (4) 
D) only (1)and (4)

Question 19

The most important characteristic of carbon atoms for forming organic molecules is

Accepted Answer

A) ability to bond together to form long chains. 
B) ability to form multiple covalent bonds. 
C) use of hybrid orbitals. 
D) A and B 
A) ability to bond together to form long chains. 
B) ability to form multiple covalent bonds. 
C) use of hybrid orbitals. 
D) A and B

Question 20

-In the figure above,which structures are identical?

Accepted Answer

A) All are identical. 
B) None are identical. 
C) only (1)and (4) 
D) only (1),(3),and (4) 
A) All are identical. 
B) None are identical. 
C) only (1)and (4) 
D) only (1),(3),and (4)

Exam 23: Organic and Biological Chemistry

In the protein,Arg- Pro- Leu- Gln,which amino acid contains the C-terminal group?

How many isomers are there for C5H12?

Identify the amino acid shown below.

Which reaction is not characteristic of aromatic compounds?

Identify the amino acid shown below.

Which is an amino acid basic side chain?

The alkane,3-ethyl-3-methylhexane contains ________ carbon atoms and ________ hydrogen atoms.

How many alpha amino acids commonly make up the different proteins found in humans?

Identify the amino acid shown below.

Which is an amino acid nonpolar neutral side chain?

How many ether isomers have the formula C4H10O?

Which one of the structures below is different from the other three?

Shown are ball-and-stick (1)and space-filling (2)models of methane. -What hybrid orbitals are used by carbon to form covalent bonds with hydrogen?

Identify the following amine base found in nucleic acids.

Which of the following does not contain a carbonyl group?

To which family does this organic compound belong?

Which one of the following behaves like a base?

-Which of the compounds shown above is correctly identified by the name 3,3-Dimethylpropane?

The most important characteristic of carbon atoms for forming organic molecules is

-In the figure above,which structures are identical?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds 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

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Filters

How many isomers are there for C₅H₁₂?

The alkane,3-ethyl-3-methylhexane contains carbon atoms and hydrogen atoms.

How many ether isomers have the formula C₄H₁₀O?