Water and Solutions
This is the name for the movement of water from high to low.
What is Osmosis?
This is the cell structure composed of phospholipids.
What is the Cell Membrane?
This is what Active Transport requires (two things).
What is a Membrane Protein and ATP energy!
This is osmosis. Explain.
What is the movement of water from high to low concentration.
This is one of the magnificent properties of water that allows certain substances to dissolve within it.
What is Polarity?
Bonus 50 points:
Describe the characteristic of water being polar. What does it mean?
This is a homogeneous mixture within which all parts are equally and evenly distributed.
What is an Solution?
These are the two parts of each phospholipid molecule.
A hydrophilic head ("water-loving") - the phosphate portion that is polar -
and
A hydrophobic tail ("water-fearing") - the fatty lipid portion that is non-polar -
This is transport that requires no energy.
Passive Transport
This is a solution with equal amount of solute inside and outside cell. This is also what happens to the cell when inside this type of solution.
What is an Isotonic Solution. What is the cell stays the same shape.
Bonus 50 points:
Why does the cell stay the same shape in an isotonic solution?
This is the "universal solvent".
What is WATER?
Bonus 50 points:
Explain why water is considered a universal solvent?
This is the smaller part of a solution; the part that dissolves within another (ex: the kool-aid powder)
This is why it's really useful to the cell that its membrane is made out of lipid molecules.
What is If the cell membrane was composed only of polar substances, the cell would dissolve.
The lipid molecules of the cell membrane are non-polar. They DON'T dissolve in water.
These are the three examples of passive transport that we have learned about in class.
What are:
Diffusion
Osmosis
Facilitated Diffusion
This is the name for a solution that causes a cell shrinking in size.
Hypertonic Solution.
Bonus 50 points:
Why does a hypertonic solution cause the cell to shrink? What is happening? Explain.
This is the movement of molecules that prompts them to spread out evenly until they reach equilibrium.
What is Diffusion.
Bonus 50 points:
Is diffusion a passive or active process. WHY?
(no explanation, no credit)
This is the more abundant (larger) part of a solution; the part that does the dissolving (ex: water)
What is Solvent?
What are Cell Membrane PROTEINS.
This passive transport is where transport proteins will help move some things from high to low concentration by giving them an opening to go through.
What is Facilitated Diffusion.
This is the name for a solution that causes a cell to swell.
Hypotonic Solution
Bonus 50 points:
Why does a hypertonic solution cause the cell to shrink? What is happening? Explain.
These are two examples of substances that can dissolve in water. This is also WHY those substances CAN dissolve in water.
What is sugar and salt. What is because those substances are POLAR.
This is equal amount of solute inside and outside cell.
What is an Isotonic Solution?
These are at least TWO FUNCTIONS of the Cell Membrane.
What are acting as a semi-permeable barrier for the cell, assist with cell communications and recognition of self, regulate homeostasis, provide protection and support?
This is movement of materials from low concentration to high concentration that require ATP energy and a protein pump.
What is Active Transport.
This is the effect of hypertonic solutions on plant cells.
What is wilting?
Bonus 50 points:
In a hypotonic solution, what would happen to the plant?
What is the cause of polarity?
What is Electronegativity
or
the unequal sharing of electrons that causes partial CHARGE.