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5 Written Questions

5 Matching Questions

  1. DNA
  2. endosymbiotic theory
  3. cell movement
  4. Eukaryotes
  5. kinesin
  1. a -Appeared about 1.5 billion years ago
    -Include all cells alive today except bacteria and archaea
    -Are larger than proaryotic cells
    -Have a more complex archetecture
    -Possess a nucleus and a variety of organelles
  2. b motor protein that moves vesicles to the cells periphery
  3. c -Is associated with proteins
    -During cell division, condenses into chromosomes
    -After cell division, relaxes into chromatin
  4. d -all cell motion is tied to movement of microfilaments and microtubules
    -changes in shape of microfilaments: enables some cells to change shape quickly, allow some cells to crawl and animal cells to divide
  5. e -proposes that mitochondria and chloroplasts arose by symbiosis from ancient bacteria
    -this theory is supported by a wealth of evidence

5 Multiple Choice Questions

  1. Schledeinden (botanist)
    Schwann (zoologist)
    Virchow (put theory together)
    -Proposed the first 2 statements of the cell theory in 1838-39
  2. -a dense network of protein fibers that supports the shape of the cell and anchors organelles
    -3 different kinds of protein fibers: microfilaments, microtubules, and intermediate filaments
  3. -All organisms are composed of one or more cells
    -Cells are the smallest living things
    -Cells arise only by division of a preiviously existing cell
  4. -There are two major kinds of cells: prokaryotes and eukaryotes
  5. motor protein that moves vesicles to the cells interior

5 True/False Questions

  1. The Plasma Membrane-Encases all living things
    -Its basic structure is represented by the fluid-mosaic model
    -Phospholipid bilayer with embedded proteins
    -In water, phospholipids spontaneously form a bilayer
    - Cell membranes contain zones called lipid rafts which are heavily enriched in cholesterol

          

  2. Nucleus-Command center of the cell; directs all activities
    -Stores hereditary information

          

  3. vacuoles-Command center of the cell; directs all activities
    -Stores hereditary information

          

  4. peroxisomes-arise from ER
    -contain 2 sets of enzymes, one in plants-converts fats to sugars
    -other set is in animals-detoxifies various harmful molecules

          

  5. cell walls-offer protection and support
    -fungal cell walls are made of chitin
    -plant cell walls are made of cellulose

          

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