Question 1

The inflection point of the titration curve for a weak monoprotic acid is equal to its pKa

Accepted Answer

A) True 
 B)False

Question 2

A solution at pH 7 contains a weak acid, HA. The pKa of the acid is 6.5. What is the ratio of [A−]:[HA]?

Accepted Answer

A)  1:3 
B)  1:1 
C)  3:1 
D)  10:1 
A)  1:3 
B)  1:1 
C)  3:1 
D)  10:1

Question 3

The tendency for an atom to attract electrons to itself in a chemical bond is called

Accepted Answer

A)  polarity. 
B)  electronegativity. 
C)  hydrophilicity 
D)  electrophilicity. 
A)  polarity. 
B)  electronegativity. 
C)  hydrophilicity 
D)  electrophilicity.

Question 4

When a carboxylate side-chain of one amino acid in a protein is in close proximity to a charged amino group of another amino acid, we call the resulting interaction a(n)

Accepted Answer

A)  ion - dipole bond 
B)  ionic bond 
C)  van der Waal's bond 
D)  salt bridge 
A)  ion - dipole bond 
B)  ionic bond 
C)  van der Waal's bond 
D)  salt bridge

Question 5

Ionic compounds and polar covalent compounds tend to dissolve in water because of

Accepted Answer

A)  ion-dipole and dipole-dipole interactions 
B)  dipole-induced dipole interactions 
C)  van der Waals bonds 
D)  hydrophobic interactions 
A)  ion-dipole and dipole-dipole interactions 
B)  dipole-induced dipole interactions 
C)  van der Waals bonds 
D)  hydrophobic interactions

The inflection point of the titration curve for a weak monoprotic acid is equal to its pK_a

A solution at pH 7 contains a weak acid, HA. The pK_a of the acid is 6.5. What is the ratio of [A−]:[HA]?

The tendency for an atom to attract electrons to itself in a chemical bond is called

When a carboxylate side-chain of one amino acid in a protein is in close proximity to a charged amino group of another amino acid, we call the resulting interaction a(n)

Ionic compounds and polar covalent compounds tend to dissolve in water because of

Biochemistry and the Organization of Cells

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of RNA

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

Exam 2: Water: the Solvent for Biochemical Reactions

The inflection point of the titration curve for a weak monoprotic acid is equal to its pKa

A solution at pH 7 contains a weak acid, HA. The pKa of the acid is 6.5. What is the ratio of [A−]:[HA]?

The tendency for an atom to attract electrons to itself in a chemical bond is called

When a carboxylate side-chain of one amino acid in a protein is in close proximity to a charged amino group of another amino acid, we call the resulting interaction a(n)

Ionic compounds and polar covalent compounds tend to dissolve in water because of

Biochemistry and the Organization of Cells

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of RNA

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

The inflection point of the titration curve for a weak monoprotic acid is equal to its pK_a

A solution at pH 7 contains a weak acid, HA. The pK_a of the acid is 6.5. What is the ratio of [A−]:[HA]?