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5 Written questions

4 Matching questions

  1. Symbiotic Theory
  2. Endoplasmic Reticulum
  3. All present day cells evolved from the same ancestor.
  4. Lysosomes
  1. a Contain digestive enzymes
  2. b ...
  3. c 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.
  4. d 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. Ostritch egg
  2. ...
  3. 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.
  4. Contain Bacteria/Archaea
  5. Enclosed in the nuclear envelope, contains most of the cells molecules of DNA that later condense into chromosomes as a cell prepares to divide.

5 True/False questions

  1. MitochondriaConatin their own DNA and 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.
    Harness energy from oxidation of food molecules to produce ATP.
    Consumes oxygen and releases carbon called this process is called cellular respiration.

          

  2. All organisms carry out gene expression:
    -flow of genetic info.
    -allows for growth/processes
    Replication--->Transcription--->Translation

          

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

          

  4. Largest cell (length)Ostritch egg

          

  5. Cells are small because...(2)Surface/volume ratio:volume increases faster than surface area.
    Nucleus(the brain): can only control certain amount of active cytoplasm.

          

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