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diffusion

unit test for cells

QuestionAnswer
cell basic unit of all life
organelle specialized structures that perform important cellular functions
What is the difference between a eukaryotic and prokaryptic cell? prokaryotic cells do not have a nucleus and eukaryotic cells do have a nucleus.
What makes up the phosopholipid bilayer of a cell membrane? a phosphate head (water loving and a fatty acid tail (water fearing)
concentration The amount of salute in a solution. salute +solvent= salution
diffusion Moves small molecules into and out of the cell, moves from an area of high to an area of low concentration, does not use energy
facillitated diffusion Moves small molecules into and out of the cell, move from an area of high to and area of low concentration, uses protein channels, no energy
osmosis Moves small water only molecules into and out of the cell membrane by way of aquaporins, moves from an area of high to low concentration, no energy required
isotonic The concentration of two solutions are the same , equal
hypertonic The solution with the greater concentration of solutes, the cell shrinks
hypotonic the solution with the lesser concentration of salutes, the cell swells
Active transport Movement across the cell membrane, moves from low to high concentration, requires energy.
molecular transport movement across the cell membrane using protein pumps, moves large molecules from low to high concentration, requires energy
endocytosis movement of large molecules into the cell by engulfing the molecule, surrounding it with a vessicle and pulling it into the cell.
exocytosis the releasing of a large molecule by the cell into it's surrounding environment.
photosynthesis CO2 (carbon dioxide) +H2O (water) react to make the products C6H12O6 (glucose) + O2 (oxygen)
pigment Is a light absorbing molecule
Chlorophyll Pigment within plants and other photosynthetic organisms
What are the two main functions of the cell membrane? 1. controls what enters and leaves the cell maintaining homeostasis. 2. provides protection and support for the cell.
What are the three types of passive transport? 1. diffusion 2. osmosis 3. facillitated diffusion
What are the three types of active transport? 1. molecular transport 2. endocytosis 3. exocytosis
What direction will water diffuse based on the concentrations of two solutions? Water will diffuse to dilute the solute , water will move into the area with the highest concentration of salute.
What are the two forms of endocytosis? 1. phagocytosis-cell eating 2. pinocytosis-cell drinking
What are the three parts of an ATP molecule? 1. base-adenine 2. phosphates (3) 3. Bonds - energy is stored between the 2nd and 3rd bonds
What are the three factors that affect photosynthesis?
Created by: Dcrawford
 

 



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