Osmosis is the diffusion of this compound important to all living things
What is water?
100
Named for the scientist who first observed it, this is the constant, random movement of molecules
What is Brownian Movement?
100
Diffusion/osmosis are 2 examples of this type of movement whereby molecules move on their own without cells giving up any energy...think drifting downriver in a boat
What is passive transport?
100
Having low salt and high water concentratons, this solution caused potato slices to gain weight and become rigid
What is a hypotonic solution?
100
This is a major difference between plant and animal cells
What is the cell wall, large vacuole or plastids (chloroplasts)?
200
Molecules natually spread out during diffusion moving from this concentration to that concentration
What is high to low?
200
The two main chemicals making up cell membranes
What are lipids and proteins?
200
This special type of diffusion involves protein channels which speed up the movement of molecules such as glucose
What is facilitated diffusion?
200
Having high salt and low water concentrations, this solution causes potatoes to lose weight and become soft
What is a hypertonic solution?
200
C6H12O6-one of the products of photosynthesis
What is glucose or simple sugar?
300
Osmosis continues until this state is reached.
What is equilibrium?
300
Two factors which can speed up or slow down diffusion
What are temperature, concentration (pressure, stirring...)?
300
This transport requires a cell to spend its own energy to move molecules across the cell membrane...think rowing a boat upriver...
What is Active Transport?
300
Plasmolysis occurs to all living cells if they are placed into this type of solution
What is a hypertonic solution (or salt water)?
300
Centers of cell respiration...think "power plants" of cells
What are mitochondria?
400
The ultimate hyptonic solution.
What is distilled water?
400
This describes membranes which allow some molecules to pass through while restricting others
What is semi-permeable (or selectively-permeable)?
400
White blood cells defend us from bacterial invasion by performing this type of transport...think taking "into the cell"
What is endocytosis?
400
Used iodine as an indicator for this compound whose molecules are too large to diffuse across a cell membrane
What is starch?
400
The most abundant organic compound in the world making up the cell walls of plants...any everything made from them such as lumber, clothing, paper...
What is cellulose?
500
This is the fate of red blood cells placed into distilled water
What is bursting (or cytolysis)?
500
Sweating and shivering are 2 examples of this ability of your body to maintain a constant internal environment in spite of a changing external one.
What is homeostasis?
500
This form of cell energy is needed to move substances against the natural flow of diffusion (from low concentration to high concentration)
What is ATP?
500
Keeping a plant from wilting, this pressure results from its large water vacuole pushing against the cell wall
What is turgor pressure?
500
Found in all cells, this colloid contains water, food, and cell organelles