Cell Transport and Communication Quiz

What is the process called when substances move across membranes without assistance?

• Facilitated diffusion

• Active transport

• Osmosis

• Passive diffusion

What structure in plant cells is formed by pectins?

• Middle lamella

• Chloroplast

• Cell membrane

• Cytoplasm

Which type of cell attachment is described as 'like rivets that hold metal together'?

• Tight junctions

• Desmosomes

• Plasmodesmata

• Gap junctions

What type of junction allows for the movement of water, ions, and small molecules in animal tissues?

• Desmosomes

• Tight junctions

• Gap junctions

• Middle lamella

What is the primary function of tight junctions in animal cells?

• To allow free movement of substances

• To connect cells like a quilt

• To provide structural support

• To facilitate cell division

What is the main purpose of cell-to-cell communication?

• To prevent liquid movement

• To exchange ions and small molecules

• To strengthen cell walls

• To facilitate photosynthesis

Which type of cell communication is found in plant tissues?

• Tight junctions

• Plasmodesmata

• Gap junctions

• Desmosomes

What allows for the continuous flow of cytoplasm between plant cells?

• Middle lamella

• Plasmodesmata

• Tight junctions

• Desmosomes

What type of junction is characterized by specialized proteins that connect cells in a watertight seal?

• Plasmodesmata

• Gap junctions

• Tight junctions

• Desmosomes

What is the term for the carbohydrate that binds plant cells together?

• Cellulose

• Starch

• Chitin

• Pectin