Amoeba Sisters: Diffusion in Cells

What is the disease called that can afflict aquarium fish?

• Ich

• Protist

• Parasite

• Methylene blue

What is the process called when a substance travels down its concentration gradient?

• Diffusion

• Active transport

• Facilitated diffusion

• Passive transport

What is the name of the commonly purchased treatment for Ich?

• Methylene blue

• Protist

• Parasite

• Guppy enthusiast

What is the overall movement of molecules in diffusion?

• From high concentration to low concentration

• From low concentration to high concentration

• In random directions

• No movement

What is the term for diffusion that occurs through a protein channel?

• Facilitated diffusion

• Active transport

• Simple diffusion

• Osmosis

Which factor can affect the rate of diffusion?

• Distance

• Temperature

• Characteristics of the solvent

• All of the above

What is the net movement of molecules in diffusion called?

• Passive transport

• Active transport

• Equilibrium

• Facilitated diffusion

What is the critical process made possible by diffusion in the human body?

• Oxygen leaving the alveoli of the lungs to the blood

• Carbon dioxide leaving the alveoli of the lungs to the blood

• Nutrients entering the cells

• Waste molecules exiting the cells

Which substance has a lower diffusion rate when compared to a substance with less mass?

• Substance with greater mass

• Substance with less mass

• Both have the same diffusion rate

• Mass does not affect diffusion rate

What is the characteristic of the cell membrane that affects the diffusion rate?

• Surface area

• Thickness

• Both surface area and thickness

• Neither surface area nor thickness