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5 Written questions

5 Matching questions

  1. flagella
  2. cell movement
  3. peroxisomes
  4. DNA
  5. kinesin
  1. a motor protein that moves vesicles to the cells periphery
  2. b -arise from ER
    -contain 2 sets of enzymes, one in plants-converts fats to sugars
    -other set is in animals-detoxifies various harmful molecules
  3. c -Is associated with proteins
    -During cell division, condenses into chromosomes
    -After cell division, relaxes into chromatin
  4. d long and few in number
  5. e -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 Multiple choice questions

  1. -found in almost all eukaryotes
    -powerhouses of cell
    -extract energy from organic molecules through oxidative metabolism
    -sausage shaped organelles, about the size of a bacterial cell
    -like bacteria, they possess circular DNA and divide by simple fission
  2. -proposes that mitochondria and chloroplasts arose by symbiosis from ancient bacteria
    -this theory is supported by a wealth of evidence
  3. -arise from the golgi complex
    -contain enzymes that break down macromolecules
    -function in intracellular digestion of worn out cellular components and substances taken into cells
    -resulting material is recycled
  4. -internal membrane system creating channels and membrane bound organelles
    -consists of 2 regions: Smooth ER-embedded with enzymes and involved with lipid and carbohydrate systhesis
    -rough ER-studded with ribosomes and involved with protein
  5. -anchor and assmble microtubules
    -not found in plants or fungi
    -may have originated as symbiotic bacteria

5 True/False questions

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


  2. Cell Theory-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


  3. Cell Size-Cells range in size from a few micrometers to several centimeters
    -Most cells are small because larger cells do not function efficiently
    -It's advantageous to have a large surface-to-volume ratio
    -As cell size increases, volume grows much faster than surface area


  4. chloroplastsshort and numerous


  5. 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


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