Diffusion Practice Video Quiz

What is the common symptom of Ich in fish?

• Red spots

• Swimming in circles

• White dots

• Loss of fins

What is the role of methylene blue in treating Ich?

• It enhances fish immunity

• It neutralizes the water pH

• It increases oxygen in water

• It acts as an antiparasitic

How does diffusion work in the context of treating Ich?

• Through direct fish contact with medicine

• By spreading the medicine evenly in water

• By changing the water color to blue

• By increasing water temperature

With diffusion, particles travel from a ​ ​ (a)   concentration to a ​ (b)   concentration.

• high
• low
• equal, equal
• low, high
• high, high

When do the molecules stop moving?

• once they all settle to the lowest point

• once all the molecules have moved to the low concentration

• they don't ever stop moving

• once equilibrium is reached

Diffusion is _________ transport

What is the difference between diffusion and facilitated diffusion?

Which of the following is not a factor that affects the rate of diffusion?

• Size of the particles
• Color of the substance
• Temperature of the environment
• distance particles can travel

What is passive transport?

• Transport without energy input

• Movement against concentration gradient

• Active movement of molecules

• Transport that requires energy

Why is diffusion critical for life?

• It's only important for fish

• It's essential for cellular processes

• It helps in cooking

• It only affects plants