This is a study guide for Jill's Biology Class. Simply mouse over the text to display the answer. This was programmed by hand by Erty Seidel. Visit his website and read his weekday webcomic at www.ertyseidel.com. He uses the screennames Ertyseidel and Lord Revx. This information is not certified to be totally correct. If you think a question or answer is wrong, send an email to erik-dot-seidel-at-ourschoolname-dot-org
You Can Visit the 1st Jill Notes Document here. You Can Visit the 2nd Jill Notes Document here. You Can Visit the 3rd Jill Notes Document here. You Can Visit the 4th Jill Notes Document here. You Can Visit the 5th Jill Notes Document here. You Can Visit the 6th Jill Notes Document here.
Fluid mosaic model
A description of membrane structure, depicting a cellular membrane as a mosaic of diverse protien molecules embedded in a fluid bilayer made of phospholipid molecules.
Phospholipid
A type of lipid molecule containing the element phosphorus in a hydrophillic 'head', to which are attached two fatty acids that form hydrophobic 'tails'. A bilayer of phospholipids makes up the basic fabric of biological membranes.
Selectively Permiable membrane
Allowing some substances to cross a biological membrane more easily than others, and blocking the passage of some altogether.
Transport protiens
A membrane protien that helps move substances across a cell surface.
Osmosis
The passive transport of water across a selectively permiable membrane.
Diffusion
The tendenct of molecules of any kind to move from where they are more concentrated to where they are less concentrated.
Facilitated diffusion
A process of diffusion in which the molecules diffuse with the assistance of transport proteins.
Active transport
The movement of a substance across a biological membrane against its concentration gradient, aided bt transport protiens and requiring the input of energy.
Passive transport
The diffusion of a substance across a membrane with no energy required.
Hypertonic
A solution with less of a desity of solute
Isotonic
A solution with the same solute concentration as another solution.
Hypotonic
A solution with more solute concentration
Plasmolysis
Hypertonic: The cell loses water and shrivels.
Turgor Pressure
The pressure of the insides of a cell against the cell wall.
Endocytosis
The movement of materials into the cytoplasm of a cell via membranous vesicles or vacuoles
Receptor mediated endocytosis
A process by which cells internalize molecules (endocytosis) into a cell by the inward budding of plasma membrane vesicles containing proteins with receptor sites specific to the molecules being internalized.
Exocytosis
The opposite of endocytosis - materials moving out of a cell.
Phagocytosis
A type of endocytosis where the cell engulfs the material being taken in.
Pinocytosis
A type of endocytosis where he cell takes fluid and dissolved solutes into small membranous vesicles.
All of this Information is (c) the sources, Quoted or Paraphrased by Erty Seidel of www.ertyseidel.com. This is not intened to be an accessory of cheating, and by using this in any way that would constitute plagarism or cheating as defined by our educational institution, will not be tolerated. In such a case, Erik "Erty" Seidel, ertyseidel.com, or any affiliated parties, including Blogger, cannot be held responsible.