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5 Written questions

5 Matching questions

  1. contractile vacuoles
  2. phagocytosis
  3. ribosomes
  4. nucleoid
  5. electron microscope
  1. a focuses a beam of electrons through the specimen or onto its surface.
  2. b pump excess water out of the cell, thereby maintaining a suitable concentration of ions and molecules inside the cell
  3. c eat by engulfing smaller organisms or other food particles
  4. d region that is not membrane enclosed
  5. e complexes mad of ribosomal RNA and protein

5 Multiple choice questions

  1. carries out a variety of tasks in the cell such as synthesis of proteins and their transport into membranes and organelles or out of the cell.
  2. proteins that have carbohydrates covalently bonded to them
  3. develops by the coalescence of smaller vacuoles themselves derived from the GA and ER.
  4. an electron beam scans the surface of the sample. The beam excites electrons on the surface and these secondary electrons are detected. The result is the image
  5. membrane-bounded vesicles formed by phagocytosis

5 True/False questions

  1. chromatinstructures that carry the genetic information


  2. vesiclesa semi fluid, jellylike substance


  3. endoplasmic reticulumconsists of a network of membranous tubules and called cisternae. Site for protein synthesis.


  4. nuclear laminaa prominent structure within the nondividing nucleus which appears through the electron microscope as a mass of densely stained granules of fibers adjoining part of the chromatin.


  5. organellesmembrane-enclosed compartments


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