Cell Membrane Structure

Match the following:

• Plasma or Cell Membrane

• located outside of the membrane; helps with cell communication and cell-to-cell connections

• Cholesterol

• stabilizes and maintains flexibility of cell membrane

• Carbohydrates

• 2 layers; allows small & non-polar molecules to pass through the membrane

• Phospholipid bilayer

• regulates what goes in and out of the cell

• Transport or Channel Proteins

• allows large and polar molecules to pass through the membrane

Which of the following describes the cell membrane?

• controls what enters and exits the cell

• protects and provide structure to the cell

• provides energy for the cell

• transports proteins and lipids throughout the cell

• helps the cell to move around

Tags

NGSS.MS-LS1-2

What is the fluid mosaic model?

• describes the phospholipid bilayer only

• describes the 4 parts of the cell membrane that can move around

• describes the 4 parts of the cell membrane but they do not move around

• describes the cellulose that provides structure and protection to the cell

Which of the following describes the 4 parts of the cell membrane?

• phospholipid bilayer, transport proteins, carbohydrates, and cholesterol

• phospholipid bilayer, transport proteins, carbohydrates, and cell wall

• phospholipid bilayer, starch, carbohydrates, and cholesterol

• cellulose, transport proteins, carbohydrates, and cholesterol

What is the function of the transport and channel proteins of the cell membrane?

• allows large molecules to pass through the cell membrane

• allows small, non-polar molecules to pass through the cell membrane

• identifies the cell and allow for cell-to-cell communication

• stabilizes the fluidity of the cell membrane

What is the function of the phospholipid bilayer of the cell membrane?

• allows large molecules to pass through the cell membrane

• allows small, non-polar molecules to pass through the cell membrane

• identifies the cell and allow for cell-to-cell communication

• stabilizes the fluidity of the cell membrane

What is the function of the carbohydrates of the cell membrane?

• allows large molecules to pass through the cell membrane

• allows small, non-polar molecules to pass through the cell membrane

• identifies the cell and allow for cell-to-cell communication

• stabilizes the fluidity of the cell membrane

What is the function of the cholesterol of the cell membrane?

• allows large molecules to pass through the cell membrane

• allows small, non-polar molecules to pass through the cell membrane

• identifies the cell and allow for cell-to-cell communication

• stabilizes the fluidity of the cell membrane

Identify the structure in the diagram.

• Phospholipid

• Cholesterol

• Triglyceride

• Carbohydrate

Which part of the phospholipid is the hydrophilic portion (likes water)?

• Glycerol

• Fatty acids

• Water

• Glycogen