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5 Written Questions

5 Matching Questions

  1. Bacteria can be non-pathogenic, photoautotrophic, or pathogenic procaryotes
  2. Cytoskeleton
  3. Cells are small because...(2)
  4. Endoplasmic Reticulum
  5. Chloroplasts
  1. a Maintain 3-D structure of the cell
    Movement of organelles (microtubules)
    Generate contractile forces (actin filaments)
    Strengthen cell (intermediate filaments)
  2. b ...
  3. c 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
  4. d Surface/volume ratio:volume increases faster than surface area.
    Nucleus(the brain): can only control certain amount of active cytoplasm.
  5. e Contain 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.

5 Multiple Choice Questions

  1. Giant squid nerve cell (39ft)
  2. Replication--->Transcription--->Translation
  3. ...
  4. Facilitate the chemical RXN involving hydrogen peroxide
    -can generate/degrade hydrogen peroxide
  5. Archaea, Bacteria, Eukarya

5 True/False Questions

  1. Archaea can be extremophilic procaryotes; methanogens, halophiles, or hyperthermophilesNo 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

          

  2. Procaryotes Vs. EucaryotesNo 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. Eucaryote = true nucleus
    -Larger than procarote
    -membrane bound organelles
    Contain Bacteria/Archaea

          

  4. Largest cell (volume)Giant squid nerve cell (39ft)

          

  5. Evidence: mitochondria/chloroplasts resemble bacteriaSize
    Single circular DNA molecule
    70 S. ribosome
    Reproduce autonomously
    Have own DNA and machinery

          

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