Cell Membrane 2.0

Front

What is homeostasis?

Back

Homeostasis is the balance that organisms maintain through self-regulating adjustments.

Front

Do all cells have a cell membrane?

Back

True

Front

What is the composition of the cell membrane?

Back

The cell membrane is composed of a phospholipid bilayer.

Front

Why is the term 'fluid' used to describe the cell membrane?

Back

The term 'fluid' applies to the cell membrane because cell membranes are able to flow.

Front

What are the heads of the phospholipids in the cell membrane considered to be?

Back

The heads of the phospholipids are considered to be hydrophilic: water loving.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining the internal environment.

Front

What does the term 'phospholipid' refer to?

Back

A phospholipid is a molecule that has a hydrophilic (water-loving) head and two hydrophobic (water-hating) tails.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane assist in transport, communication, and structural support.

Front

What is selective permeability?

Back

Selective permeability is the property of the cell membrane that allows certain substances to pass while blocking others.

Front

What is the significance of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the fluidity of the cell membrane.