Cell Membrane - Basics

What does homeostasis mean?

• To maintain balance

• To create a cell wall

• To allow transport

• To stay still

Tags

NGSS.HS-LS1-3

What is the PRIMARY purpose of the cell membrane?

• It only serves as protection

• It decides what comes in and out of the cell

• It's the jelly substance found in cells

• It's to make the cell a certain shape

Tags

NGSS.MS-LS1-2

What is the cell membrane made out of?

• Phospholipids and proteins

• Carbohydrates and proteins

• Lipids and cytoplasm

• Phospholipids and nucleic acids

What other names is the cell membrane referred to as? Select all that apply.

• Cytoplasm

• Phospholipid bilayer

• Plasma membrane

• Lipid bilayer

• Cell wall

Match the following:

• Cholesterol

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

• Plasma or Cell Membrane

• Allows large and polar molecules to pass through the membrane

• Carbohydrates

• Regulates what goes in and out of the cell

• Phospholipid bilayer

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

• Transport or Channel Proteins

• Stabilizes and maintains flexibility of cell membrane

Tags

NGSS.MS-LS1-2

Which of the following describes the cell membrane? Select TWO correct answers.

• 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

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 allowed to pass through the phospholipid bilayer of the cell membrane?

• Large molecules (glucose)

• Small, non-polar molecules (oxygen, carbon dioxide, and water)

• Larger proteins (enzymes)

• Nothing is allowed through

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