Cell Structure and Function

What type of molecules cannot easily cross the lipid bilayer?

• Neutral solutes
• Small nonpolar molecules
• Large uncharged molecules
• Polar molecules

What is the main role of the endomembrane system?

• Photosynthesis
• Cell division
• Energy production
• Coordinate activities related to protein and lipid synthesis

What gives the plasma membrane its fluid nature?

• Rigid protein scaffolding
• Solid phospholipid layer
• DNA strands within the membrane
• Lipid bilayer with mobile proteins

What part of the cell wall is formed after the primary wall?

• Tertiary wall
• Middle lamella
• Outer membrane
• Secondary wall

What happens to the primary cell wall as the cell matures?

• It becomes thinner
• It dissolves completely
• It transforms into the nucleus
• It loses its ability to grow