Question

name__ per composition of the cell membrane & functions the cell membrane is also called the membrane and is made of a phospholipid . the phospholipids have a hydrophilic (water attracting) and two hydrophobic (water repelling) tails. the head of a phospholipid is made of an alcohol and group, while the tails are chains of . phospholipids can move and allow water and other molecules to pass through into or out of the cell. this is known as simple because it does not require and the water or molecules are moving the concentration gradient. another type of lipid in the cell membrane is that makes the membrane more fluid. embedded in the phospholipid bilayer are that also aid in diffusion and in cell recognition. proteins called proteins go all the way through the bilayer, while proteins are only on one side. integral proteins are also called proteins. large molecules like or carbohydrates use proteins to help move across cell membranes. some of the membrane proteins have carbohydrate __ attached to help cells in recognize each other and certain molecules. list 4 functions of the cell or plasma membrane: a. b. c. d.

Explanation:

The cell membrane is also called the plasma membrane. It is a phospholipid bilayer. Phospholipids have a hydrophilic head (made of an alcohol and phosphate group) and hydrophobic tails (fatty - acid chains). They can move laterally and allow small, non - polar molecules to pass through by simple diffusion (no energy required, moving down the concentration gradient). Cholesterol makes the membrane more fluid. Proteins (integral and peripheral) are embedded in the bilayer. Integral proteins are also called transmembrane proteins. Large molecules like proteins or carbohydrates use proteins to cross the membrane. Some membrane proteins have carbohydrate chains for cell recognition. The functions of the cell membrane include: providing structural support, regulating the movement of substances in and out of the cell, cell - cell recognition, and signal transduction.

Answer:

Composition of the Cell Membrane & Functions:
The cell membrane is also called the plasma membrane and is made of a phospholipid bilayer. The phospholipids have a hydrophilic (water attracting) head and two hydrophobic (water repelling) tails. The head of a phospholipid is made of an alcohol and phosphate group, while the tails are chains of fatty - acids. Phospholipids can move laterally and allow water and other small, non - polar molecules to pass through into or out of the cell. This is known as simple diffusion because it does not require energy and the water or molecules are moving down the concentration gradient.
Another type of lipid in the cell membrane is cholesterol that makes the membrane more fluid. Embedded in the phospholipid bilayer are proteins that also aid in diffusion and in cell recognition. Proteins called integral proteins go all the way through the bilayer, while peripheral proteins are only on one side. Integral proteins are also called transmembrane proteins. Large molecules like proteins or carbohydrates use proteins to help move across cell membranes. Some of the membrane proteins have carbohydrate chains attached to help cells in recognize each other and certain molecules.
List 4 functions of the cell or plasma membrane:
a. Provide structural support
b. Regulate the movement of substances in and out of the cell
c. Cell - cell recognition
d. Signal transduction