Flashcard Practice

Front

What is the volume of a cell?

Back

The total amount of space taken up by a cell, including all cellular contents.

Front

What is the movement of water from a high concentration to a low concentration called?

Back

Osmosis.

Front

What are the two parts of a phospholipid?

Back

Hydrophilic Head and Hydrophobic Tail.

Front

How is the surface area to volume ratio of a cell calculated?

Back

Surface area divided by volume.

Front

What do the heads of phospholipids in a cell membrane face outward because they are?

Back

Hydrophilic.

Front

Define diffusion.

Back

The movement of particles from an area of high concentration to an area of low concentration.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is active transport?

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is the function of the cell membrane?

Back

To protect the cell and control the movement of substances in and out.

Front

What is the role of cytoplasm in a cell?

Back

It is the gel-like substance that fills the cell and holds organelles in place.