Experimental Design
A scientific procedure that involves manipulating a variable or variables
What is an experiment?
The attraction between two water molecules
What is cohesion?
What is tonicity?
What is the ability of a solution outside a cell to make water move into a cell?
The border of a cell that is designed to let in nutrients and keep out toxins
What is the cell membrane?
What is di?
An experiment with only one controlled variable in which all other variables are kept constant
What is a controlled experiment?
The attraction between a water molecule and another type of molecule
What is adhesion?
When particles move from an area of low concentration to an area of high concentration
What is diffusion?
The state that causes plant cells to be healthy and press their cell membranes against their cell walls
What is turgidity?
Under in Greek
One name for the variable that a scientist measures
What is an observed variable? What is a dependent variable?
The curved surface of water in a glass/Pyrex container
What is the meniscus?
A solution that has a higher solute potential than a cell
What is hypotonic?
The state that causes plant cells to plasmolyze and plants to wilt
What is flaccidity?
Homeo in English
What is like?
Both names for the variable that a scientist manipulates
What is a controlled or independent variable?
The effect when adhesion is greater than cohesion
What is capillary action?
When water passes into a cell because the cell has more solute than the extracellular solution
What is osmosis?
The pressure that stops more water from entering an animal cell when the cell is in a hypotonic solution
What is nonexistent?
Dissolving in Greek
What is lysis?
When there are two controlled variables and you can’t tell which one is causing the change in the observed variable
What is confounding?
another name for dihydrogen monoxide (other than water or H2O)
What is hydrogen hydroxide? What is hydronium hydroxide? What is hydric acid?
A solution that has a solute potential above zero
What is impossible?
When the cell membrane detaches from the cell wall
What is plasmolysis?
An imaginary word that could mean two cells are dissolving equally
What is isolysis?