Properties of Water
This property explains why water sticks to itself and forms droplets.
What is cohesion?
The diffusion of water across a selectively permeable membrane.
What is osmosis?
The type of solution that causes an animal cell to swell.
What is hypotonic?
The maintenance of stable internal conditions in a living organism.
What is homeostasis?
The most common type of biological feedback that reduces change.
What is negative feedback?
This property explains why water sticks to glass in a graduated cylinder.
What is adhesion?
In osmosis, water moves from an area of low solute concentration to an area of this type of concentration.
What is high solute concentration?
The type of solution that causes a cell to lose water and shrink.
What is hypertonic?
Two internal factors cells must regulate to survive include water balance and this chemical measure of acidity.
What is pH?
The initial change that disrupts homeostasis and activates a feedback loop.
What is a stimulus?
Water moves toward salt because water molecules are slightly positive and negative. This property is called:
What is polarity?
If a cell placed in a solution shrinks, the surrounding solution is this type.
What is hypertonic?
The comparison of solute concentration outside a cell to inside the cell.
What is tonicity?
When cells swell or shrink excessively, these functional molecules may lose their shape and stop working.
What are proteins?
In a dehydration response, the organ that reduces water loss to restore blood concentration.
What are the kidneys?
Water’s ability to be attracted to charged solutes, causing it to move toward higher solute concentrations
What is polarity?
A condition in which water moves equally in both directions and the cell remains the same size.
What is isotonic?
In this type of solution, the solute concentration is equal inside and outside the cell.
What is isotonic?
When blood becomes too concentrated and the kidneys retain water to restore balance, this type of regulation is occurring.
What is negative feedback?
The part of a feedback loop that detects a change in internal conditions.
What is the receptor (or sensor)?
This property of water helps organisms resist rapid temperature changes during environmental shifts.
What is high specific heat?
Even when a cell’s size does not change, water molecules are still moving in this state of balance.
What is dynamic equilibrium?
The structure that prevents plant cells from bursting in hypotonic environments.
What is the cell wall?
If water balance is not restored, cells may swell or shrink to the point that this ultimate outcome occurs.
What is cell death?
A feedback system in which the response amplifies the original change rather than reducing it.
What is positive feedback?