Which of the following is NOT a macromolecule located in the cell membrane? 

• carbohydrate chain
• phospholipid
• transport protein
• nucleic acid

What is the macromolecule that makes up most of the cell membrane?

• proteins
• lipids 
• carbohydrate 
• nucleic acids

What is a function of membrane proteins? 

• Cell-to-cell communication 
• Transport 
• Hormone recognition 
• All of the above!

Which part of a phospholipid is hydrophobic?

• Head
• Tail

Which part of a phospholipid is hydrophilic?

• Head
• Tail

What does it mean to be hydrophilic? 

• Water loving
• Water hating

What does it mean to be hydrophobic? 

• Water loving
• Water hating

Which part of the phospholipid bilayer is facing a watery environment?

• Head
• Tail

Which part of the phospholipid bilayer is facing away from a watery environment?

• Head
• Tail

What proteins are responsible for facilitating movement of molecules across the cell membrane?

• Enzymes
• Transport Proteins
• Cell Recognition Proteins
• Hormones