chapter 5 bio

diffusion does not require the cell to expend ATP. therefore, diffusion is considered a type of

passive transport

selectibely permeable

the plasma membrane allows some substances to enter or leave a cell more easily than others

which of the following statements regarding membrane function is false?

the plasma membrane is the control center of the cell

if placed in tap water, an animal cell will undergo lysis, whereas a plant cell will not. what accounts for this difference?

the relative inelasticity and strength of the plant cell

osmosis can be defined as

diffusion of water

some protozoans have special organelles called contractile vacuoles that continually eliminate excess water from the cell. the presence of these organelles tell you that the environment

is hypotonic to the protozoan

in a hypotonic solution, an animal cell will

lyse

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. which of the following will occur?

water will leave the balloon