Cellular Transport and Homeostasis Quiz

What is the primary function of homeostasis in an organism?

• To maintain and regulate stable internal conditions

• To change internal conditions frequently

• To increase external environmental changes

• To disrupt cellular processes

Which part of the cell is primarily responsible for maintaining homeostasis?

• Mitochondria

• Nucleus

• Cell membrane

• Ribosome

What does it mean when a cell membrane is selectively permeable?

• All substances can pass through freely

• No substances can pass through

• Only certain substances can pass through

• It allows only water to pass through

Which of the following is NOT a type of passive transport?

• Endocytosis

• Diffusion

• Osmosis

• Facilitated diffusion

In diffusion, molecules move from an area of _____ concentration to an area of _____ concentration.

• low; high

• high; low

• equal; equal

• none; some

What is the main difference between diffusion and facilitated diffusion?

• Facilitated diffusion requires a protein channel

• Diffusion moves molecules against the gradient

• Facilitated diffusion requires energy

• Diffusion requires a protein channel

In a hypertonic solution, what happens to a cell?

• It shrivels

• It bursts

• It remains the same

• It swells

Which type of solution has the same concentration of water inside and outside the cell?

• Hypotonic

• Hypertonic

• Isotonic

• Supersonic

What is required for active transport to occur?

• Energy in the form of ATP

• Only water

• Only small molecules

• No energy

Which process involves the cell using energy to engulf large particles?

• Osmosis

• Exocytosis

• Diffusion

• Endocytosis