Question

PHOSPHOLIPID

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.

Answer 1

Cholesterol makes the cell membrane more fluid, proteins embedded in the membrane aid in diffusion and recognition, integral proteins span the membrane while peripheral proteins are surface-bound, and carbohydrate chains on proteins help with cell recognition.

The other type of lipid in the cell membrane that makes the membrane more fluid is cholesterol. Embedded in the phospholipid bilayer are proteins that 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 recognize each other and certain molecules.

List 4 functions of the cell or plasma membrane:

• Forming the physical barrier to protect cellular contents.
• Regulating the passage of substances into and out of the cell.
• Facilitating communication and signaling between cells.
• Providing a platform for the binding and functioning of enzymes.

Answer 2

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 transport proteins go all the way through the bilayer, while integral proteins are only on one side.

Integral proteins are also called transmembrane proteins.

Large molecules like lipids or carbohydrates use proteins to help move across cell membranes.

Some of the membrane proteins have carbohydrate glycoproteins attached to help cells in recognize each other and certain molecules.

List 4 functions of the cell or plasma membrane:

1.) identification

2.) communication

3.) regulation of solute exchange through the membrane

4.) isolation of the cytoplasm from the external environment