Cell Structure and Function

What is the primary factor affecting membrane permeability?

• Color of the molecule
• Odor of the molecule
• Density of the molecule
• Size and polarity of the molecule

What is the role of the plasma membrane in signal transduction?

• Generates ATP
• Stores genetic information
• Synthesizes lipids
• Receives and relays signals to the cell interior

What is the function of the cell wall in preventing excessive water uptake?

• Absorbs excess water
• Creates osmotic balance
• Blocks water entry
• Provides structural support and turgor pressure

What is the correct sequence of events in exocytosis?

• Fusion → formation → transport → release
• Formation → fusion → transport → release
• Release → transport → fusion → formation
• Vesicle formation → transport → fusion → release

What is the function of the secondary cell wall?

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