Cell Membrane and Homeostasis

Front

What do large molecules need to get across the cell membrane?

Back

Transport proteins

Front

What is the function of the cell membrane?

Back

To maintain homeostasis

Front

What is the composition of the cell membrane?

Back

A double layer of phospholipids

Front

Why is the cell membrane like a castle wall?

Back

Because it keeps out dangerous things

Front

What is the role of the cell membrane in protecting the cell?

Back

To keep out dangerous things

Front

What are phospholipids?

Back

Molecules that make up the cell membrane, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What does homeostasis mean?

Back

The process by which a cell maintains a stable internal environment despite changes in external conditions.

Front

What is selective permeability?

Back

The ability of the cell membrane to allow certain substances to pass while blocking others.

Front

What role do proteins play in the cell membrane?

Back

Proteins assist in transporting substances across the membrane and can act as receptors for signaling.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of the cell membrane as a mosaic of various components (lipids, proteins, carbohydrates) that move fluidly.