The video tutorial explains the concept of PHA buffer solutions, which consist of a buffering agent, typically a mild acid or base dissolved in water. It highlights the significance of maintaining specific pH ranges for biochemical processes and describes how body fluids, such as blood, function as natural buffer solutions to stabilize pH levels.

What is a PHA buffer solution primarily composed of?

• Proteins and enzymes

• Strong acids and bases

• Mild acids or bases dissolved in water

• Salts and sugars

Which of the following is NOT a characteristic of a buffer solution?

• Is composed of a mild acid or base

• Maintains stability in biochemical processes

• Contains a strong acid or base

• Resists changes in pH

Why are narrow pH ranges crucial for biochemical processes?

• They allow for faster chemical reactions.

• They prevent the formation of harmful compounds.

• They ensure that biochemical processes function correctly.

• They increase the solubility of gases in liquids.

Which of the following acts as a buffer solution in the human body?

• Skin

• Bone marrow

• Blood

• Muscle tissue

What role do body fluids play in maintaining pH balance?

• They act as catalysts for reactions.

• They transport oxygen.

• They serve as buffer solutions.

• They provide nutrients to cells.