Question

name: adoniah jacques -period: 5 date: 9/23/25 chapter 8 sec. 3,4,5 notes cell boundaries all cells are surrounded by a barrier known as the many cells also have another cell membrane the cell membrane: - - is made of - has proteins embedded in the lipid bilayer. - its mixed composition labels it a

Explanation:

The first blank refers to the main barrier around cells which is the cell - membrane. Many plant and some other cells have an additional cell - wall outside the cell - membrane. The cell - membrane is a selectively permeable barrier, made of a lipid bilayer with proteins embedded in it, and its mixed composition makes it a fluid mosaic model.

Answer:

All cells are surrounded by a barrier known as the cell membrane.
Many cells also have another cell wall.
The cell membrane:

• is a selectively permeable barrier
• is made of a lipid bilayer
• it’s mixed composition labels it a fluid mosaic model