Cell Structure and Function

What is the main difference between passive and active transport?

• Type of molecules transported
• Number of molecules moved
• Size of molecules transported
• Direction of movement relative to the concentration gradient

Which organelle system coordinates functions of different membranous organelles?

• Respiratory chain
• Photosynthetic system
• Cytoskeleton
• Endomembrane system

What is the role of the cell wall in preventing infection?

• Secretes antibiotics
• Absorbs toxins
• Stores immune proteins
• Acts as a barrier to pathogens

What gives shape to the plant cell and protects it from damage?

• Plasma membrane
• Cytoplasm
• Nucleus
• Cell wall

Which structures connect the cytoplasm of neighboring plant cells?

• Gap junctions
• Desmosomes
• Tight junctions
• Plasmodesmata