Unicellular and Simple Multicellular Organisms Isolate and Eliminate Waste Materials

question 41

Multiple Choice

Unicellular and simple multicellular organisms isolate and eliminate waste materials by:

• A)moving the wastes into a contractile vacuole and eliminating them through exocytosis.
• B)filtering the wastes through specialized filters in the plasma membrane and into the extracellular space.
• C)secreting wastes into excretory tubules that connect to the outside of the cell.
• D)filtering the wastes into a collecting tubule and then selectively reabsorbing key solutes before excretion.
• E)All of these choices are correct.