Cell Structure and Function

What organelle is NOT considered part of the endomembrane system?

• Endoplasmic reticulum
• Golgi apparatus
• Vesicles
• Mitochondria

What is the correct sequence of cell wall layers from outside to inside in mature plant cells?

• Primary wall → Middle lamella → Secondary wall
• Secondary wall → Primary wall → Middle lamella
• Middle lamella → Secondary wall → Primary wall
• Middle lamella → Primary wall → Secondary wall

What is the purpose of the secondary cell wall?

• Allow for cell expansion
• Absorb sunlight
• Store water
• Provide mechanical strength

What is the main driving force behind osmosis?

• Electrical charge
• pH level
• Enzyme activity
• Concentration gradient of water

What is exocytosis responsible for?

• Taking in fluids
• Absorbing nutrients
• Breaking down waste
• Releasing materials from the cell