dumb science flashcards Flash Cards

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Title: dumb science flashcards
Description: i dont want to do this at ALL!!!!!!!!!111!!!11111!!!
Number of Cards: 30
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Author: aschwab584811
Created: 2010-11-17
Tags: filiment mr
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    • Question
    • Answer
    • Side 3
    • when was anton Leeuwenhoek living
    • 1600
    • what did Anton van Leeuwenhoek do
    • 1st to use microscope
      Saw microorganisms in pond water extinguish
    • when was Robert Hooke living
    • mid 1600
    • what did robert hooke do
    • 1st to look at a plant under micrscope
      First to see and name cells
    • what was the cell theory
    • All living things composed of cells
       Cell are the bacic units of structure and function in living things
      New cells are produced form living things
    • 2 main divitions of cells
    • prokaryotic
      eukaryotic
    • cell wall
    • o Found in prokaryotivd and plsnts not snimsld
      o Located outside the cell membrane
      o All some things to flow in and out
      o Provide support and protection for the cell
      o Made of carbs and protienes
    • nucleus
    • Controls most cell prossesies
      o Contains dna
      o Not found in prokaryotic cells
    • ribosomes
    • makes proteins
    • types Endoplasmic Reticuluminternal membrain system
    • rough and smoth
    • rough er
    • makes proteins has ribosomes
    • smooth er
    • no ribosomes makes lipides
    • golgi aparatis
    • Contain enzymes that attach carbs and lipids to proteins
    •  Lysosomes
    • o small
      o Filled with enzymes
      o Help break things down
      o Removedebris and old organals
      o Clean up crew
    • vacuoles
    • o Store water slats protiens
      o Creates pressure to hold up leaes and flowers
      o Small vacuoles are called vesicles
    • chloroplast
    • o Not found in animals and fungi
      o Use sunlight to make energy
      o Contain cholorphill
      o Has two membreains
    • mitochondria
    • Make energy from food
      o Has two membranes
    • Cell Membrane
    •  Lets thingsin and out of the cell
       Provides protection and suprot
       Made of a Lipid bilayer a double layer sheet made
       Contains lots of proteins too
    • Diffusion
    •  Concentration of a solution= mass/volume (g/L)
       Cytoplasm is a solution
    • Osmosis
    •  The diffusion of water through a selectively permeable membrain
    •  Osmotic Pressure
    • o Pressure exerted on the cell membrane
    • Facilitated Diffusion
    •  Some molecules can only cross the cell membrane with the help of proteins
    • Active Transport
    •  Material moving
    • Endocytosis
    • cell membrane surrounds something and brings it into the cell in a little pocket
    • unicellulR
    • one celled
      * Does everything living things do
      * Some are prokaryotes and some are eukaryotes
      * Some live in groups called colonies
    •  Multicellular Organisms
    • Cells in multicellular organisms cannot live on their own
      * Cells are specialized to do certain jobs
      * Cells work together like a team
    • first level of organization
    • cells
    • 2end level of organization
    • tissues
    • third level of orgnization
    • organs
    • 4th level of organization
    • organ systems