Biology Ch 6

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Biology Ch 6
2013-03-17 13:17:47


bio ch 6
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  1. A cell with a predominance of free ribosomes is most likely
    producing primarily cytoplasmic proteins
  2. A cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria. It could be a cell from
    nearly any eukaryotic organism
  3. Movement of vesicles within the cell depends on what cellular structures?
    microtubules and motor proteins
  4. Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which cellular organelle must be involved in this condition?
    the lysosome
  5. All of the following are part of a prokaryotic cell except
    an endoplasmic reticulum
  6. A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light, whereas organelles in the lighter fraction could produce ATP in the dark. The heavier and lighter fractions are most likely to contain, respectively,
    chloroplasts and mitochondria
  7. Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?
    gap junctions
  8. The evolution of eukaryotic cells most likely involved
    endosymbiosis of an aerobic bacterium in a larger host cell–the endosymbiont evolved into mitochondria.
  9. The difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by
    the function of the Golgi apparatus in sorting and directing membrane components
  10. In a plant cell, DNA may be found
    in the nucleus, mitochondria, and chloroplasts