60 Questions
What type of bonds result from a complete transfer of an electron?
Ionic bonds
What is the building block of proteins?
Amino acids
What determines the acidity of a solution?
The concentration of hydrogen ions (H+)
What type of bonds occur between nonpolar groups?
Hydrophobic interactions
What is a solution of weak acids and their conjugate bases that resist changes in pH when small amounts of acid or base are added?
Buffers
What is the technique used to determine the concentration of an unknown solution by using a solution of known concentration?
Titration
What type of bonds join amino acids in proteins?
Covalent bonds
What is the tendency of an acid to lose a proton defined by?
Ka
What type of bonds form between a hydrogen atom and an electronegative atom?
Hydrogen bonds
What is the strength of an acid determined by?
Its dissociation constant (Ka)
What type of bonds form between cysteine residues?
Disulfide bonds
What is the Ka value used to define?
The strength of an acid
What type of bonds result from a complete transfer of an electron?
Ionic bonds
What is the building block of proteins?
Amino acids
What determines the acidity of a solution?
The concentration of hydrogen ions (H+)
What type of bonds occur between nonpolar groups?
Hydrophobic interactions
What is a solution of weak acids and their conjugate bases that resist changes in pH when small amounts of acid or base are added?
Buffers
What is the technique used to determine the concentration of an unknown solution by using a solution of known concentration?
Titration
What type of bonds join amino acids in proteins?
Covalent bonds
What is the tendency of an acid to lose a proton defined by?
Ka
What type of bonds form between a hydrogen atom and an electronegative atom?
Hydrogen bonds
What is the strength of an acid determined by?
Its dissociation constant (Ka)
What type of bonds form between cysteine residues?
Disulfide bonds
What is the Ka value used to define?
The strength of an acid
What are macromolecules built from?
Smaller subunits
What are covalent bonds?
Bonds formed when atoms share electrons
What are amino acids?
Building blocks of proteins
What determines the acidity of a solution?
Concentration of hydrogen ions (H+)
What are buffers?
Solutions of weak acids and their conjugate bases that resist changes in pH
What determines the strength of an acid?
Dissociation constant (Ka)
What are hydrophobic interactions?
Interactions between nonpolar groups
What are ionic bonds?
Bonds resulting from a complete transfer of an electron, forming two ions with opposite charges
What is water?
A polar molecule that is highly cohesive and functions as a solvent in cells
What affects the charge and function of biological molecules?
pH of the solution
What are peptide bonds?
Bonds joining amino acids in proteins
What is titration?
A technique used to determine the concentration of an unknown solution by using a solution of known concentration
What are the building blocks of proteins?
Amino acids
What determines the acidity of a solution?
The concentration of hydrogen ions (H+)
What is the purpose of buffers in biochemistry?
To resist changes in pH when small amounts of acid or base are added
What determines the strength of an acid?
Its tendency to dissociate
What type of interactions occur between nonpolar groups in biochemistry?
Hydrophobic interactions
What type of bonds result from a complete transfer of an electron, forming two ions with opposite charges?
Ionic bonds
What is the polarity of water?
Polar
What is the purpose of titration in biochemistry?
To determine the concentration of an unknown solution by using a solution of known concentration
What type of bonds form between cysteine residues in proteins?
Disulfide bonds
What determines the charge and function of biological molecules?
The concentration of hydrogen ions (H+)
What type of bonds form between a hydrogen atom and an electronegative atom in biochemistry?
Hydrogen bonds
What is the purpose of Ka in biochemistry?
To measure the strength of an acid
What are the building blocks of proteins?
Amino acids
What determines the acidity of a solution?
The concentration of hydrogen ions (H+)
What are buffers?
Solutions of weak acids and their conjugate bases
What is the strength of an acid determined by?
Its dissociation constant (Ka)
What type of bonds result from a complete transfer of an electron?
Ionic bonds
What is the function of water in cells?
To function as a polar solvent
What do peptide bonds join together in proteins?
Amino acids
What is the technique used to determine the concentration of an unknown solution by using a solution of known concentration?
Titration
What are macromolecules built from?
Smaller subunits
What determines the tendency of an acid to lose a proton?
The acid dissociation constant (Ka)
What type of interactions occur between nonpolar groups?
Hydrophobic interactions
What forms between cysteine residues?
Disulfide bonds
Study Notes
Key Concepts in Biochemistry
- Macromolecules such as proteins and nucleic acids are built from smaller subunits.
- Covalent bonds form when atoms share electrons, and each atom has a fixed number of covalent bonds it can form.
- Amino acids are the building blocks of proteins and have a central carbon atom attached to an amino group, carboxyl group, hydrogen atom, and variable group.
- The acidity of a solution is determined by the concentration of hydrogen ions (H+), and the tendency of an acid to lose a proton is defined by the acid dissociation constant (Ka).
- Buffers are solutions of weak acids and their conjugate bases that resist changes in pH when small amounts of acid or base are added.
- The strength of an acid is determined by its dissociation constant (Ka) and its tendency to dissociate is inversely related to its pKa value.
- Hydrophobic interactions occur between nonpolar groups, while hydrogen bonds form between a hydrogen atom and an electronegative atom.
- Ionic bonds result from a complete transfer of an electron, forming two ions with opposite charges.
- Water is a polar molecule that is highly cohesive and functions as a solvent in cells.
- Biological molecules have optimal ionic states, and the pH of a solution affects their charge and function.
- Peptide bonds join amino acids in proteins, and disulfide bonds form between cysteine residues.
- Titration is a technique used to determine the concentration of an unknown solution by using a solution of known concentration. pH meters can accurately measure the pH of a solution.
Key Concepts in Biochemistry
- Macromolecules such as proteins and nucleic acids are built from smaller subunits.
- Covalent bonds form when atoms share electrons, and each atom has a fixed number of covalent bonds it can form.
- Amino acids are the building blocks of proteins and have a central carbon atom attached to an amino group, carboxyl group, hydrogen atom, and variable group.
- The acidity of a solution is determined by the concentration of hydrogen ions (H+), and the tendency of an acid to lose a proton is defined by the acid dissociation constant (Ka).
- Buffers are solutions of weak acids and their conjugate bases that resist changes in pH when small amounts of acid or base are added.
- The strength of an acid is determined by its dissociation constant (Ka) and its tendency to dissociate is inversely related to its pKa value.
- Hydrophobic interactions occur between nonpolar groups, while hydrogen bonds form between a hydrogen atom and an electronegative atom.
- Ionic bonds result from a complete transfer of an electron, forming two ions with opposite charges.
- Water is a polar molecule that is highly cohesive and functions as a solvent in cells.
- Biological molecules have optimal ionic states, and the pH of a solution affects their charge and function.
- Peptide bonds join amino acids in proteins, and disulfide bonds form between cysteine residues.
- Titration is a technique used to determine the concentration of an unknown solution by using a solution of known concentration. pH meters can accurately measure the pH of a solution.
Key Concepts in Biochemistry
- Macromolecules such as proteins and nucleic acids are built from smaller subunits.
- Covalent bonds form when atoms share electrons, and each atom has a fixed number of covalent bonds it can form.
- Amino acids are the building blocks of proteins and have a central carbon atom attached to an amino group, carboxyl group, hydrogen atom, and variable group.
- The acidity of a solution is determined by the concentration of hydrogen ions (H+), and the tendency of an acid to lose a proton is defined by the acid dissociation constant (Ka).
- Buffers are solutions of weak acids and their conjugate bases that resist changes in pH when small amounts of acid or base are added.
- The strength of an acid is determined by its dissociation constant (Ka) and its tendency to dissociate is inversely related to its pKa value.
- Hydrophobic interactions occur between nonpolar groups, while hydrogen bonds form between a hydrogen atom and an electronegative atom.
- Ionic bonds result from a complete transfer of an electron, forming two ions with opposite charges.
- Water is a polar molecule that is highly cohesive and functions as a solvent in cells.
- Biological molecules have optimal ionic states, and the pH of a solution affects their charge and function.
- Peptide bonds join amino acids in proteins, and disulfide bonds form between cysteine residues.
- Titration is a technique used to determine the concentration of an unknown solution by using a solution of known concentration. pH meters can accurately measure the pH of a solution.
Test your knowledge on the fundamental concepts of biochemistry with this quiz! From the building blocks of macromolecules to the properties of water and the role of pH in biological systems, this quiz covers key concepts in biochemistry. Sharpen your understanding of amino acids, bonds, buffers, and more with this short and informative quiz. Practice your skills and improve your understanding of the principles that govern molecular biology.
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