Homeostasis 2 Vocabulary Flashcards

Front

What is homeostasis?

Back

Maintain a stable internal environment

Front

What does the cell membrane do?

Back

Control what enters and exits the cell

Front

What is the nucleus of a cell?

Back

The control center containing DNA

Front

What is the phospholipid bilayer?

Back

A double layer of fats in the cell membrane

Front

What is a polar molecule?

Back

Has positive and negative ends, allowing it to mix with water

Front

What is a nonpolar molecule?

Back

Does not have a charge and does not mix with water

Front

What does the Fluid Mosaic Model describe?

Back

A mix of different molecules that can move around

Front

What does selectively permeable mean?

Back

Only allows certain materials to pass through

Front

What does passive transport involve?

Back

Moving substances without using energy

Front

What is diffusion?

Back

Moving molecules from high to low concentration