Understanding Selective Permeability

The video tutorial explains how materials move in and out of cells through the cell membrane, using a mesh bag as a demonstration tool. The bag's holes represent the selective permeability of the cell membrane, allowing some materials to pass while blocking others. This concept is crucial for understanding cellular processes.

What is the primary function of the cell membrane in relation to material movement?

• To block all materials from entering or exiting

• To allow all materials to pass freely

• To regulate the movement of materials in and out of the cell

• To store materials for the cell

In the demonstration, what does the mesh bag represent?

• The cytoplasm

• The entire cell

• The cell membrane

• The nucleus of a cell

Why can't larger rocks exit the mesh bag in the demonstration?

• The holes in the bag are too small

• The rocks are too heavy

• The bag is sealed tightly

• The rocks are glued to the bag

What is the term used to describe the cell membrane's ability to allow some materials to pass while blocking others?

• Selective permeability

• Universal permeability

• Impermeability

• Complete permeability

Which material is able to exit the mesh bag in the demonstration?

• Air

• Larger rocks

• Sand

• Water