Environments
No net movement of water takes place when cell's tonicity is at this
Measures the tendency of water to move by osmosis
What is water potential?
Describes when there is more extracellular solute and less extracellular water
What is environmental hypotonicity?
Process that secretes large macromolecules out of the cell
What is exocytosis?
Line of best fit that shows the general pattern/overall direction of the data
What is trend line?
What is tonicity?
Water is more likely to move into the area when it has this water potential
What is more negative?
Optimum state for plant cells
What is turgidity?
Moves molecules and/or ions against their concentration gradient (low concentration to high concentration)
What is active transport?
Moves large quantities of water across a selectively permeable membrane
What are aquaporins?
What is hypertonic, isotonic, and hypotonic?
In an open container, this substance has a water potential value of zero (0)
Pure water
Maintains water balance and allows organisms to control their internal solute composition/water potential
What is osmoregulation?
A form of metabolic energy required by active transport (most mentioned)
What is ATP?
Causes osmotic pressure to be high outside of the plant cell
What is environmental hypotonicity?
The environment’s tonicity is described to be this compared to the cell when more solutes exist in the cell than the environment
What is hypotonic?
Decreasing pressure potential will cause this change in water potential
What is a decrease?
Constant movement of molecules across membranes is required to maintain this
What is growth and/or homeostasis?
Types of this more general process include: phagocytosis and pinocytosis
What is endocytosis?
Excess buildup of water within a cell in an hypotonic environment leads the cell to become this
What is lysed?
The environment’s tonicity is described to be this compared to the cell when less solutes exist in the cell than the environment
What is hypertonic?
Increasing the amount of solutes in water will cause this change in solute potential
What is an increase in solute potential?
Water flows into plant vacuoles via this process causing the vacuoles to expand and press against the cell wall
What is osmosis?
Process where molecules move with the concentration gradient through transport proteins (high concentration to low concentration)
What is Facilitated Diffusion?
Temperature in Celsius + 273
What is Temperature in Kelvin?