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5 Written questions

5 Matching questions

  1. endosymbiotic theory
  2. Prokaryotes
  3. golgi complex
  4. Cell Size
  5. The Plasma Membrane
  1. a -flattened stack of membranes that are scattered throughout the cytoplasm
    -depending on cell, number of golgi bodies range from a few to several hundred--referred to as the golgi complex
    -golgi complex collects, packages, modifies, and distributes molecules
  2. b -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
  3. c -Include bacteria and archaea
    -Over 5,000 species are recognized
    -3 main shapes: rod, spiral, and spherical
    -Lack nucleus and organelles
  4. d -proposes that mitochondria and chloroplasts arose by symbiosis from ancient bacteria
    -this theory is supported by a wealth of evidence
  5. e -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

5 Multiple choice questions

  1. (1665)
    -Examined a thin slice of cork tissue
    -Observed honeycombed compartments he called cellulae
    -Term became cells
  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. -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
  4. -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. motor protein that moves vesicles to the cells interior

5 True/False questions

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

          

  2. The Prokaryotic 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

          

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

          

  4. cillashort and numerous

          

  5. DNAshort and numerous

          

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