Osmosis Knowledge

Freshwater Fish (solute concentration to their environment)

• Hyperosmotic to the environment 

• Gains water, loses salt

Freshwater Fish (Inflow/Outflow)

• Does not drink water

• Salt in

• Water in

• Active transport by gills

• Salt out in waste

Freshwater Fish (Urine)

• Large volume of urine

• Urine is less concentrated than body fluids

Saltwater Fish (solute concentration to their environment)

• Hypoosmotic to their environment

• Lose water, gain salt

Saltwater Fish (Inflow/Outflow)

• Drinks water

• Salt in

• Water out

• Salt out (active transport by gills)

Saltwater Fish (Urine)

• Small volume of urine

• Slightly less concentrated than body fluids

Terrestrial vertebrate (solute concentration to their environment)

• lose body water to air

Terrestrial vertebrate (Inflow/Outflow)

• Drinks water

• Salt in by mouth

• Water and salt out in waste

Terrestrial vertebrate (Urine)

• Moderate volume of urine

• Urine is more concentrated than body fluids