Osmosis
movement of water through a membrane from high to low concentrations
osmosis
internal concentrations of change as the salinity around them changes
osmoconformers
Density of fresh water
1 g/mL
uses energy created internally to balance their internal tmperature
endotherm
Which organ system is primarily responsible for water balance in your body?
Excretory System a.k.a Urinary system
When a solution is hypotonic to the interior of the cell where will the water move?
from the solution to the interior of the cell
Most marine invertebrates are regulators or conformers?
osmoconfomers
Approximately how many bones do newborn babies have?
Around 300
maintains a constant internal body temperature
homeotherm
Which organ is the primary organ of the excretory system?
Kidney
Water molecules move via osmosis until what condition is met?
equilibrium
actively regulate and maintain their internal salt and water balance regardless of external conditions
osmoregulators
Name a gas that is lighter than air
Helium
relies on external environment to regulate body temperature
ectotherm
What is the job or function of the excretory system?
To eliminate waste and to balance the solute and water concentrations in the body.
If a goldfish is placed in a hypertonic (high salinity) solution, what would happen to its cells?
they would shrink
can only tolerate a small change in the salinity of their external environment
osmoconformers
What is the smallest unit of matter?
atom
If a graph were drawn to show how different organisms regulate their internal environment; with environmental conditions on the x axis, and internal conditions on the y; What shape would the line take to show an excellent osmoregulator?
straight line running horizontally
Salmon are excellent osmoregulators being able to migrate from salt to fresh waters. In which water system would they have to drink water to regulate and why?
They drink salt water to increase the amount of salts internally because external environment is hypertonic and internal is hypotonic. Do not want to lose too much water to the outside so they use gills to actively transport salts out of the blood and out of the body, kidneys produce less, but more concentrated urine to remove excess salts.
What is the chemical signal for gold?
Au