Question 1

Identify the amino acid shown below.

Accepted Answer

A) Cysteine (Cys) 
B) Serine (Ser) 
C) Threonine (Thr) 
D) Tyrosine (Tyr) 
A) Cysteine (Cys) 
B) Serine (Ser) 
C) Threonine (Thr) 
D) Tyrosine (Tyr) D

Question 2

The cycloalkane represented by a square is called ________ and has the molecular formula ________.

Accepted Answer

A) cyclopropane,C3H6 
B) cyclopropane,C3H8 
C) cyclobutane,C4H4 
D) cyclobutane,C4H8 
A) cyclopropane,C3H6 
B) cyclopropane,C3H8 
C) cyclobutane,C4H4 
D) cyclobutane,C4H8 D

Question 3

Which one of the following compounds is an alcohol?

Accepted Answer

A) CH3OCH3   
B) CH3COCH2CH3 
C) (CH3)2CHOH  
D) CH3CO2CH3 
A) CH3OCH3   
B) CH3COCH2CH3 
C) (CH3)2CHOH  
D) CH3CO2CH3 C

Question 4

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 5

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 6

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 7

Which one of the following behaves like an acid?

Accepted Answer

A) CH3COCH3 
B) (CH3)2NH 
C) C2H5OH 
D) C2H5COOH 
A) CH3COCH3 
B) (CH3)2NH 
C) C2H5OH 
D) C2H5COOH

Question 8

Name the product of hydrogenation of trans-2-pentene.

Accepted Answer

A) pentane 
B) cis-2-pentene 
C) trans-2-pentane 
D) none of these 
A) pentane 
B) cis-2-pentene 
C) trans-2-pentane 
D) none of these

Question 9

Which one of the following amino acids contains a polar side chain?

Accepted Answer

A) valine 
B) glycine 
C) cysteine 
D) alanine 
A) valine 
B) glycine 
C) cysteine 
D) alanine

Question 10

Which of the following is not part of a nucleotide?

Accepted Answer

A) cyclic amine base 
B) fatty acid 
C) phosphoric acid 
D) a sugar 
A) cyclic amine base 
B) fatty acid 
C) phosphoric acid 
D) a sugar

Question 11

The smallest alkyne is called

Accepted Answer

A) ethene. 
B) propene. 
C) 1-butyne. 
D) acetylene. 
A) ethene. 
B) propene. 
C) 1-butyne. 
D) acetylene.

Question 12

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 13

Which of the following notations represents the dipeptide shown below?

Accepted Answer

A) Phe-Thr 
B) Thr-Phe 
C) Ser-Tyr 
D) Tyr-Ser 
A) Phe-Thr 
B) Thr-Phe 
C) Ser-Tyr 
D) Tyr-Ser

Question 14

The H-C-H bond angles in C2H6,C2H4,and C2H2 are ________,________,and ________,respectively.

Accepted Answer

Question 15

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 16

Monosaccharides are classified as either ________ or ________.

Accepted Answer

The answer of Monosaccharides are classified as either ________ or...

Question 17

How many grams of Ca(OH)2 are needed to neutralize 5.00 g of 3-methylbutanoic acid?

Accepted Answer

A) 1.81 g 
B) 2.10 g 
C) 3.63 g 
D) 4.20 g 
A) 1.81 g 
B) 2.10 g 
C) 3.63 g 
D) 4.20 g

Question 18

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 19

Which of the following atoms is expected to be sp2 hybridized?

Accepted Answer

A) C in C2H6 
B) C-H in C3H4 
C) O in CH3CH2OH 
D) O in CHO    
A) C in C2H6 
B) C-H in C3H4 
C) O in CH3CH2OH 
D) O in CHO

Question 20

Hemoglobin is a protein molecule which contains 4 iron atoms.If the mass percent of iron is 0.342%,what is the molar mass of hemoglobin?

Accepted Answer

A) 1020 g/mol 
B) 16,300 g/mol 
C) 65,300 g/mol 
D) none of these 
A) 1020 g/mol 
B) 16,300 g/mol 
C) 65,300 g/mol 
D) none of these

Exam 23: Connections to Organic and Biological Chemistry

Identify the amino acid shown below.

The cycloalkane represented by a square is called ________ and has the molecular formula ________.

Which one of the following compounds is an alcohol?

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

Which is an amino acid basic side chain?

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

Which one of the following behaves like an acid?

Name the product of hydrogenation of trans-2-pentene.

Which one of the following amino acids contains a polar side chain?

Which of the following is not part of a nucleotide?

The smallest alkyne is called

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

Which of the following notations represents the dipeptide shown below?

The H-C-H bond angles in C2H6,C2H4,and C2H2 are ________,________,and ________,respectively.

Identify the amino acid shown below.

Monosaccharides are classified as either ________ or ________.

How many grams of Ca(OH)2 are needed to neutralize 5.00 g of 3-methylbutanoic acid?

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

Which of the following atoms is expected to be sp2 hybridized?

Hemoglobin is a protein molecule which contains 4 iron atoms.If the mass percent of iron is 0.342%,what is the molar mass of hemoglobin?

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

The cycloalkane represented by a square is called and has the molecular formula .

The H-C-H bond angles in C₂H₆,C₂H₄,and C₂H₂ are ,,and ,respectively.

Monosaccharides are classified as either or .

How many grams of Ca(OH)₂ are needed to neutralize 5.00 g of 3-methylbutanoic acid?

Which of the following atoms is expected to be sp² hybridized?