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Which part of a plant cell is partially permeable and which part is fully permeable?
Cell membrane is partially cell wall is fully
Does adding water to a solution make it more concentrated or more dilute?
Dilute
Name three things that increase the rate of diffusion
increase in SA/V ratio, increase in temp, increase in concentration gradient, decrease in distance, decrease in size
Where Protein is synthesized within the cell
Ribosomes, Rough Endoplasmic Reticulum
What is plasmolysis?
When a plant cell is in a concentrated solution and loses so much water that the cell membrane pulls away from the cell wall. This usually kills the cell.
What is a flaccid plant cell?
A plant cell that is in a concentrated solution and has lost water and wilted
Rather than bursting in pure water a plant cell becomes turgid. Explain
The cytoplasm presses out against the cell membrane (like in an animal cell) but the cell wall prevents the cell from bursting. Instead it blows up like a tire
What would happen if you put an animal cell in a concentrated sugar solution?
The Animal cell would shrivel up because the water would leave the animal cell via osmosis and the cytoplasm would shrink
What happens if you put an animal cell in pure water? Explain
The cell will burst. The water will move by osmosis into the animal cell and the cell will burst because animal cells do not have cell walls
A concentrated solution has a ______ water potential
Low
A dilute solution has a _______ water potential
High
What is Osmosis
Diffusion of water molecules in a situation where water can pass through a partially permeable membrane but solute cannot
What is a concentrated solution
Large amount of solute
What is a dilute solution
Large amount of solvent
Particles move ____________ concentration gradients (up or down)
Down
Cell membranes are freely permeable to ________ and ________
Oxygen and CO2
Give an example of diffusion in plants
CO2 diffuses into the stomata d/t low [CO2] inside the leaf and high [CO2] outside O2 diffuses out of the stomata
Diffusion is the net movement from a _________ concentration to a __________ concentration
High, low
Scientific word for "spreading out through the air"
Diffusion
Universal Solvent
Water
__________ + _____________ = a solution
Solvent + Solute
Rank the speed of movement of particles in a solid, liquid and gas
Fastest: gas, liquid, solid


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