Cell Membrane

Front

Define cell (plasma) membrane

Back

Flexible boundary of a cell that separates a cell from its surroundings.

Front

What type of bond is formed when a molecule of water is created?

Back

Covalent bond (share electrons).

Front

In a phospholipid, which part is HYDROPHILIC?

Back

The phosphate 'head'.

Front

Why is it difficult to wash oil from your hands with plain water?

Back

Water is polar, and oil is nonpolar, so they will not combine.

Front

Which type of biological macromolecule is the main component of the plasma membrane?

Back

Lipid.

Front

What is the primary function of the cell membrane?

Back

To regulate what enters and exits the cell.

Front

What are the two main components of the cell membrane?

Back

Phospholipids and proteins.

Front

What does it mean for a molecule to be amphipathic?

Back

It has both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts.

Front

What role do proteins play in the cell membrane?

Back

They assist in transport, act as receptors, and provide structural support.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of the cell membrane as a mosaic of various components that move fluidly.