Chapter 16- Cells Review & Cell transport

Front

What does semi-permeable mean?

Back

Some molecules can move through the membrane.

Front

What are unicellular organisms that lack a nucleus called?

Back

Prokaryotes.

Front

How does the cell membrane help maintain homeostasis in each cell?

Back

The cell membrane controls the movement of substances in and out of the cell.

Front

What type of organisms have cells that contain a nucleus?

Back

Eukaryotes.

Front

What is diffusion?

Back

The process where molecules spread from an area of greater concentration to an area of lesser concentration.

Front

What is osmosis?

Back

The diffusion of water molecules through a semi-permeable membrane.

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 are the two main types of cells?

Back

Prokaryotic and Eukaryotic.

Front

What is a characteristic of prokaryotic cells?

Back

They do not have a nucleus.

Front

What is homeostasis?

Back

The ability of a cell or organism to maintain a stable internal environment.