The Flow of Materials Into and Out of Cells - Section 1.3 Quiz
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Windows in Canada often have something called a low-e coating, which is a very thin layer of metallic oxide that is bonded to the surface of the glass. It allows most daylight to pass through it but it prevents heat and ultra-violet (UV) rays from passing through.
This type of window could be described as _______ to light.
selectively permeable
impermeable
permeable
super-permeable
Which substance is least likely to move freely into a cell?
Waste
Water
Oxygen
Food
An animal cell uses diffusion to obtain the oxygen it needs to produce energy. What tissue would be best at providing that cell with oxygen?
A blood vessel
A cushion of fat tissue
Adjacent muscle tissue
Stomach lining
Diffusion means that the concentration of oxygen inside a cell
is nearly the same as outside the cell.
is always higher than outside the cell.
is always lower than outside the cell.
is not related to how much oxygen is outside the cell.
Scientists use dialysis tubing to dilute or concentrate solutions. This tubing is a selectively permeable membrane with holes large enough to let water pass through it but too small to let any dissolved material pass through. Imagine that you have sealed a very concentrated glucose solution inside a dialysis tube and placed this tube in a beaker of pure water overnight. What would you likely find next morning?
The tube will have burst open
The tube will have shrunken with nothing inside it
The tube will look the same as it did last night
The tube will be inside out
What is the correct definition of "osmosis"?
Osmosis is the movement of water through a selectively permeable membrane
Osmosis is the diffusion of a solute from a region of higher concentration to a region of lower concentration
Osmosis is the movement of a solute through a selectively permeable membrane
Osmosis is the movement of either a solute or a solution across a permeable membrane
Plant cells rely on osmosis to maintain their rigidity. Which statement about plants cells and osmosis is correct?
Movement of water in and out of cells is the process of osmosis used by plant cells
Because osmosis is the active movement of water across a membrane, it is a process that requires energy from the plant cell
Osmosis only occurs when a plant is wilted; otherwise the process does not occur
Osmosis is the process through which plant cells obtain food and energy
Which is an example of diffusion in daily life?
A man allows a tea bag to steep in a cup of hot water for a few minutes
A young mother stirs water into condensed soup and heats it to a boil
A baker beats red food colouring into a batter to make a pink cake
A child sprinkles food flakes onto the surface water of a fish bowl
Students place a celery stick into a beaker of concentrated salt solution and allow it to sit overnight. What do you think will happen to the carrot stick?
It will become shriveled and floppy
It will lose its cell structure and begin to dissolve.
It will not be changed in any way.
It will swell and stiffen.
Which is not an example of diffusion?
A cell maintains an interior concentration of glucose (for energy) that is much a higher than outside
A cell that is consuming oxygen at a high rate is constantly having it replaced by oxygen from outside across its cell membrane
A plant cell remains rigid because water can move across its cell wall and membrane
The concentration of carbon dioxide is the same inside a cell as it is outside a cell
