Cell Organelles

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1. What is the difference in structure between the smooth endoplasmic reticulum and the rough endoplasmic reticulum?

  • The rough ER has centrioles attached to it, and the smooth ER does not
  • The rough ER has ribosomes attached to it, and the smoothh ER does not
  • The smooth ER is normally much larger than the rough ER
  • The rough ER is attaced to the nucleus, and the smooth ER is attached to the cell membrane
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2. What are microtubules?

  • Tiny organelles on the surface of the cell that record information about the cells environment
  • A component of the cytoskeleton that forms a scaffold like structure that determines the shape of the cell
  • Contractile fibres formed from the protein actin
  • A component of the cytoskeleton that can break down the cell and rebuild it again during complex cellular processes

3. How is the size of ribosomes in prokaryotic cells determined?

  • Its determined by the rate in which they settle or form a sedimate in solution
  • Its random
  • Its determined by the size of the cell
  • Its determined by how many ribosomes are present

4. The fluid interior of mitochondria is called?

  • The chromatin
  • The mitroplasm
  • The matrix
  • The cisternae

5. In prokaryotic cells, the cell wall is made from...?

  • Peptidoglycan
  • Ribosomes
  • Cellulose
  • Starch

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