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5 Written questions

5 Matching questions

  1. cystol
  2. electron microscope
  3. nuclear envelope
  4. vesicles
  5. nucleoid
  1. a focuses a beam of electrons through the specimen or onto its surface.
  2. b sacs made of membrane
  3. c encloses the nucleus, separating its contents from the cytoplasm.
  4. d a semi fluid, jellylike substance
  5. e region that is not membrane enclosed

5 Multiple choice questions

  1. of the DNA is in an organelle called the nucleus which is bounded by a double membrane
  2. membrane-enclosed compartments
  3. pump excess water out of the cell, thereby maintaining a suitable concentration of ions and molecules inside the cell
  4. develops by the coalescence of smaller vacuoles themselves derived from the GA and ER.
  5. consists of a network of membranous tubules and called cisternae. Site for protein synthesis.

5 True/False questions

  1. transmission electron microscopean 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

          

  2. nuclear laminaa netlike array of protein filaments that maintains the shape of the nucleus by mechanically supporting the nuclear envelope

          

  3. endomembrane systemconsists of a network of membranous tubules and called cisternae. Site for protein synthesis.

          

  4. prokaryotic cellthe DNA is concentrated in the nucleoid

          

  5. food vacuolesmembrane-enclosed compartments

          

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