Protein Ionization and Adsorption in Acidic Solutions

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At the iso-electric point of a protein molecule, the net charge is:

Variable

Positive

Zero (correct)

Negative

In acid solution, what charge does the basic group NH2 acquire?

-1

0

+1 (correct)

+2

Which type of colloids typically adsorb ions to acquire electric charges?

Hydrophobic colloids (correct)

Hydrophilic colloids

Lyophobic colloids

Lyophilic colloids

Lyophilic colloids are thermodynamically:

Stable Signup and view all the answers

Most lyophobic dispersions are _ and have __ hydration.

Hydrophobic, low Signup and view all the answers

Colloidal particles can acquire a positive or negative charge through:

Ions adsorption Signup and view all the answers

Which method is most likely to be used for determining the molecular weight of polymers?

Einstein equation Signup and view all the answers

Which of the following methods cannot cause sedimentation, even with the help of a laboratory centrifuge?

Gravitational force Signup and view all the answers

In which colloidal dispersion are the particles negatively charged?

Kaolin Signup and view all the answers

Which factor mainly causes the particles in a colloidal dispersion to acquire charges?

Ionization or adsorption Signup and view all the answers

Which of the following does not provide information regarding the shape of the particles in a colloidal dispersion?

Ionization Signup and view all the answers

What prevents the coagulation of particles with like charges on their surfaces?

Electrostatic repulsion Signup and view all the answers

Which colloidal dispersion has particles that may be positive, negative, or neutral depending upon the pH of the medium?

Proteins Signup and view all the answers

What is the purpose of adding a hydrophilic colloid to a hydrophobic colloid?

To stabilize the system by forming a protective cover Signup and view all the answers

What is the term for the weight of protective colloid needed to prevent a color change in gold sol?

Gold number Signup and view all the answers

What is the characteristic of surfactants that allows them to function as emulsifiers?

They are amphiphiles, having both polar and non-polar groups Signup and view all the answers

What causes a reduction in zeta potential below the critical value, making a hydrophobic colloid sensitive?

Addition of a hydrophobic colloid of opposite charge Signup and view all the answers

What is the phenomenon where a hydrophilic colloid forms a protective cover on hydrophobic colloid particles, stabilizing the system?

Protection Signup and view all the answers

Protein Ionization and Adsorption in Acidic Solutions

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Questions and Answers

At the iso-electric point of a protein molecule, the net charge is:

In acid solution, what charge does the basic group NH2 acquire?

Which type of colloids typically adsorb ions to acquire electric charges?

Lyophilic colloids are thermodynamically:

Most lyophobic dispersions are _ and have __ hydration.

Colloidal particles can acquire a positive or negative charge through:

Which method is most likely to be used for determining the molecular weight of polymers?

Which of the following methods cannot cause sedimentation, even with the help of a laboratory centrifuge?

In which colloidal dispersion are the particles negatively charged?

Which factor mainly causes the particles in a colloidal dispersion to acquire charges?

Which of the following does not provide information regarding the shape of the particles in a colloidal dispersion?

What prevents the coagulation of particles with like charges on their surfaces?

Which colloidal dispersion has particles that may be positive, negative, or neutral depending upon the pH of the medium?

What is the purpose of adding a hydrophilic colloid to a hydrophobic colloid?

What is the term for the weight of protective colloid needed to prevent a color change in gold sol?

What is the characteristic of surfactants that allows them to function as emulsifiers?

What causes a reduction in zeta potential below the critical value, making a hydrophobic colloid sensitive?

What is the phenomenon where a hydrophilic colloid forms a protective cover on hydrophobic colloid particles, stabilizing the system?

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Protein Ionization and Adsorption in Acidic Solutions

Podcast Beta

Questions and Answers

At the iso-electric point of a protein molecule, the net charge is:

In acid solution, what charge does the basic group NH2 acquire?

Which type of colloids typically adsorb ions to acquire electric charges?

Lyophilic colloids are thermodynamically:

Most lyophobic dispersions are _________ and have __________ hydration.

Colloidal particles can acquire a positive or negative charge through:

Which method is most likely to be used for determining the molecular weight of polymers?

Which of the following methods cannot cause sedimentation, even with the help of a laboratory centrifuge?

In which colloidal dispersion are the particles negatively charged?

Which factor mainly causes the particles in a colloidal dispersion to acquire charges?

Which of the following does not provide information regarding the shape of the particles in a colloidal dispersion?

What prevents the coagulation of particles with like charges on their surfaces?

Which colloidal dispersion has particles that may be positive, negative, or neutral depending upon the pH of the medium?

What is the purpose of adding a hydrophilic colloid to a hydrophobic colloid?

What is the term for the weight of protective colloid needed to prevent a color change in gold sol?

What is the characteristic of surfactants that allows them to function as emulsifiers?

What causes a reduction in zeta potential below the critical value, making a hydrophobic colloid sensitive?

What is the phenomenon where a hydrophilic colloid forms a protective cover on hydrophobic colloid particles, stabilizing the system?

More Quizzes Like This

Science Quiz Protein Synthesis

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Protein Structure and Bonds

Biology Week 3 Protein Functions Flashcards

Most lyophobic dispersions are _ and have __ hydration.