7 Oct unit 2 Final

What 3 things can you find in all cells?

Cell membrane and cytoplasm and DNA

What do eukaryotic cells also have?

Membrane-bound organelles

What do cells need to do with their environment?

Interact

What is keeping a stable environment inside a cell called?

Homeostasis

What controls what goes in and out of a cell?

Cell membrane

What does the cell membrane help regulate?

Homeostasis

What is the cell membrane made of and what does bi mean?

Phospholipid bilayer and two

What are the head and tail of a phospholipid like?

The head is polar and the tail is nonpolar

How do polar and nonpolar molecules share electrons?

Polar molecules share unequally and nonpolar molecules share equally

What should a cell membrane diagram include?

Two layers of phospholipids and helper proteins

How do oxygen and carbon dioxide travel through the cell membrane?

Simple diffusion

What is simple diffusion also known as?

Passive transport

What direction do molecules move during passive transport?

From high concentration to low concentration

What do membrane proteins act as and what is facilitated diffusion?

Channels that help molecules cross the membrane without energy

What is active transport and what energy does it use?

Moving molecules from low to high concentration using ATP to power protein pumps

What process brings molecules into the cell?

Endocytosis

What process removes cell waste?

Exocytosis

What else does exocytosis move out of the cell?

Important materials the cell has made