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5 Written Questions

5 Matching Questions

  1. Symbiotic Theory
  2. Largest cell (volume)
  3. Endoplasmic Reticulum
  4. Cells are small because...(2)
  5. Cell shape depends on function
  1. a Ostritch egg
  2. b The ancestral eucaryotic cell was a predator that fed by capturing other cells. Such a way of life requires a large size, a flexible membrane, and a cytoskeleton to help the cell move and eat. The nuclear compartment may have evolved to keep the DNA segregated from this physical and chemical hurly-burly, so as to allow more delicate and complex control of the way the cell reads out its genetic information.
  3. c ...
  4. d Surface/volume ratio:volume increases faster than surface area.
    Nucleus(the brain): can only control certain amount of active cytoplasm.
  5. e Irregular maze of interconnected spaces enclosed by a membrane that transports material through-out the cell
    -Smooth ER:synthesis of lipids, carbs., steroids
    -Rough ER: protein synthesis through ribosomes

5 Multiple Choice Questions

  1. Packages/modifies molecules received from ER then transports
  2. Maintain 3-D structure of the cell
    Movement of organelles (microtubules)
    Generate contractile forces (actin filaments)
    Strengthen cell (intermediate filaments)
  3. ...
  4. Temporary storage organelles involved in transport by the processes of endocytosis/exocytosis
  5. Consists of cytosol--->jelly-like mixture
    Consists of organelles

5 True/False Questions

  1. Evidence: mitochondria/chloroplasts resemble bacteriaContain own DNAand reproduce by dividing in two.
    Thought to derive from bacteria that were engulfed by some ancestor of present-day eucaryotic cells, creating a symbiotic relationship.
    Contain chlorophyll/enzymes involved in photosynthesis to generate sugar and oxygen.
    Generate food and oxygen for mitochondria to use.

          

  2. Bacteria can be non-pathogenic, photoautotrophic, or pathogenic procaryotesNo nucleus
    DNA-one circular chromosome
    DNA not associated with histones
    No membrane enclosed organelles
    Divide by binary fission

    DNA enclosed in nucleus, multiple linear chromosomes DNA associated with histones,non-histone proteins
    Membrane enclosed organelles
    Require mechanisms

          

  3. ChloroplastsContain own DNAand reproduce by dividing in two.
    Thought to derive from bacteria that were engulfed by some ancestor of present-day eucaryotic cells, creating a symbiotic relationship.
    Contain chlorophyll/enzymes involved in photosynthesis to generate sugar and oxygen.
    Generate food and oxygen for mitochondria to use.

          

  4. All organisms carry out gene expression:
    -flow of genetic info.
    -allows for growth/processes
    ...

          

  5. Eucaryote = true nucleus
    -Larger than procarote
    -membrane bound organelles
    Contain Bacteria/Archaea

          

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