Cell Membrane

What is the main component of a cell membrane?

• Cholesterol
• Phospholipids
• Proteins
• Sugar molecules

What molecule often acts as an antigen, identifying what a cell is?

• Cholesterol
• Phospholipids
• Peripheral proteins
• Glycoproteins

What molecule is important to keeping a cell membrane flexible?

• Cholesterol
• Transmembrane proteins
• Peripheral proteins
• Glycoproteins

What are the three important functions of a cell membrane? You will select three answers.

• To protect the cell and keep it safe
• To control what goes in and out of the cell
• To make energy for the cell
• To help the cell communicate with other cells
• To store food and water

What is a transmembrane protein?

• Transmembrane proteins are found only on the outer layer of the cell membrane>

• Transmembrane proteins go all the way through the membrane.

• Transmembrane proteins help with cell signaling.

• Transmembrane proteins are not involved in transport.

What is a peripheral protein?

• Peripheral proteins go across the entire membrane.

• Peripheral proteins are only on the inside or outside of the membrane.

• Peripheral proteins help with making energy.

• Peripheral proteins help transport molecules.

Which protein is responsible for transporting substances?

• Peripheral

• Transmembrane

What does "bilayer" mean?

• one layer
• two layers
• laminated
• bilateral

D is an example of

• cholesterol

• phospholipid

• glycoprotein

• transmembrane protein

Looking at the phospholipids, which part is hydrophilic (water loving)?

• head

• tail

• the middle