Cell Membrane and Transport Flashcard Review

Front

What is a hypotonic solution?

Back

A solution that has a lower concentration of solutes compared to the inside of a cell, causing the cell to swell and potentially burst.

Front

What is the role of proteins in the phospholipid bilayer?

Back

Proteins form channels and pumps that facilitate the transport of substances across the cell membrane.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy, including processes like diffusion and osmosis.

Front

What is endocytosis?

Back

A form of active transport where the cell engulfs material from the outside environment, bringing it into the cell.

Front

What is the function of channel proteins?

Back

Channel proteins allow specific molecules to pass through the cell membrane, facilitating transport.

Front

What is a phospholipid?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What is the function of carbohydrates in the cell membrane?

Back

Carbohydrates are involved in cell recognition and communication, often attached to proteins or lipids.

Front

What is a hypertonic solution?

Back

A solution that has a higher concentration of solutes compared to the inside of a cell, causing the cell to shrink.