Properties of water
This property allows water molecules to stick to each other.
The maintenance of stable internal conditions despite changes in the external environment.
Homeostasis
All living things are made of one OR more of these basic units
cells
Water is considered a polar molecule because of its _______ _______ of _______
unequal sharing of electrons
The bonds between water molecules are called what?
hydrogen bonds
Water's high __________ capacity allows it to absorb large amounts of hear without changing temperature as much as other substances. ex: oil.
specific heat capacity
When you get hot and start sweating, this is an example of a _______ feedback loop.
negative
reproduction
true or false: viruses are considered living because they can reproduce.
FALSE. They need a host to reproduce, lack cell, don't respond to stimuli.
This characteristic of life involves passing traits from parent to offspring.
genetics
This property allows water to dissolve many substances, earning it the nickname "universal solvent"
polarity/polar
This organ system helps maintain body temperature in humans.
Skin/nervous system
homeostasis
Sweating, shivering, goosebumps are all examples of how our body maintains what?
internal regulation/body temperature
Name the type of feedback loop where the response amplifies the original stimulus
positive feedback.
The property that allows water to stick to other surfaces. ex: plant cell walls
adhesion
When blood sugar levels rise after eating, this hormone is released to lower glucose levels.
insulin
This characteristic involves increasing in size AND complexity over time.
growth and development
This property of water allows insects like water striders to walk on water.
surface tension
describe how cohesion and adhesion work together in plants to move water from roots to leaves.
capillary action. cohesion pulls water molecules up together, adhesion helps water stick to xylem walls thus creating tension that pulls water upward.
Due to hydrogen bonding, solid water (ice) is _______ ________than liquid water, allowing it to float.
less dense
This term descries the ideal range that the body tries to maintain for various conditions.
normal range
Name at least 5 characteristics of life.
made of cells, reproduce, use energy, homeostasis, DNA (genetic material), respond to stimuli, growth & development, adapt & evolve, cellular organization.
Explain how water's properties support homeostasis in living organisms.
Water's high specific heat helps maintain stable body temperature, water acts as a solvent which allows for the transport of nutrients and waste.
When a plant wilts due to lack of water, it is losing this battle with homeostasis.
water balance