Diffusion does not require the cell to expend atp

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18) Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of  A) exocytosis.  B) phagocytosis.  C) passive transport.  D) active transport.  E) endocytosis.  Answer:  C  Topic:  5.3  Skill:  Conceptual Understanding 19) Osmosis can be defined as  Topic:  5.4  Skill:  Factual Recall 20) When two aqueous solutions that differ in solute concentration are placed on either side of a semipermeable membrane and  osmosis is allowed to take place, the water will  Topic:  5.4  Skill:  Factual Recall  21) In the lab, you use a special balloon that is permeable to water, but not sucrose, to make an "artificial cell." The balloon is filled  with a solution of 20% sucrose and 80% water and is immersed in a beaker containing a solution of 40% sucrose and 60% water.  5
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Which of the following will occur?  Topic:  5.4  Skill:  Application 22) Some protozoans have special organelles called contractile vacuoles that continually eliminate excess water from the cell. The  presence of these organelles tells you that the environment  A) is isotonic to the protozoan.  B) is hypotonic to the protozoan.  C) is contaminated with pollutants.  D) contains a higher concentration of solutes than the protozoan.  E) is hypertonic to the protozoan.  Answer:  B  Topic:  5.4  Skill:  Application
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