Membrane Review

Front

What does it mean for a membrane to be semi-permeable?

Back

A semi-permeable membrane allows certain substances to pass through while blocking others.

Front

What is the primary component of most cell membranes?

Back

Lipids are the primary component of most cell membranes.

Front

What happens to a cell placed in a hypotonic solution?

Back

The cell swells and may burst due to water entering the cell.

Front

What are two other names for the cell membrane?

Back

Plasma membrane and fluid mosaic model.

Front

What happens to a cell placed in a hypertonic solution?

Back

The cell shrinks as water leaves the cell.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the structure of the cell membrane as a mosaic of various proteins that float in or on the fluid lipid bilayer.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane assist with transport, act as receptors, and provide structural support.

Front

What is osmosis?

Back

Osmosis is the movement of water across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Define isotonic solution.

Back

An isotonic solution has the same solute concentration as the cell, resulting in no net movement of water.

Front

What is the significance of carbohydrates in the cell membrane?

Back

Carbohydrates on the cell membrane play a key role in cell recognition and signaling.