Cells: Question Preview (ID: 104)

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The process by which water moves across a selectively permeable membrane is
a) osmosis b) passive transport c) diffusion d) active transport
Molecules move by diffusion from
a) an area of low concentration to area of high b) inside to outside the cell c) big things to little ones d) an area of high to an area of low concentration
The organelle most important to movement in and out of the cell is
a) the vacuole b) the cell membrane c) the cell wall d) the nucleus
Diffusion is the process by which small molecules are
a) used for energy b) recycled into other organelles c) move across the cell membrane d) made into sugars
Selective permeability means
a) That only big things can get in b) Only little tiny things can enter the cell c) The cell makes glucose d) Some things can come in, while others can not
When your egg sat in the salt water, the cells
a) shrank, because water moved out because of osmosis b) broke up, because of diffusion c) Stayed the same, because of diffusion d) swelled up, because of osmosis
The movement of materials through a cell membrane without using energy is called
a) active transport b) osmosis c) passive transport d) diffusion
The biggest difference between active and passive transport is
a) the cell doesn\'t need a selectively permeable membrane b) Nothing-there is no difference c) passive transport doesn\'t require any energy, while active transport does d) active transport doesn\'t require any energy, while passive transport does
One method of active transport requires the cell to use
a) an endoplasmic reticulum as a transport vehicle b) proteins that work as transport vehicles c) a nucleus to plan the escape d) mitochondria as energy boosters
Another method of active transport is called
a) engulfing-the cell membrane surrounds the particle and pinches it off b) Protein synthesis-the cell proteins eat up the paticle c) osmosis-water comes across the cell membrane d) resistance-the cell fights off the foreign body
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