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5 Written Questions

5 Matching Questions

  1. nucleoid
  2. electron microscope (EM)
  3. scanning electron microscope (SEM)
  4. cellular metabolism
  5. cytoplasm
  1. a An instrument that focuses an electron beam through, or onto the surface of, a specimen. An electron microscope achieves a hundredfold greater resolution than a light microscope.
  2. b A dense region of DNA in a prokaryotic cell.
  3. c Everything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.
  4. d The chemical activities of cells.
  5. e A microscope that uses an electron beam to study the surface architecture of a cell or other specimen.

5 Multiple Choice Questions

  1. A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.
  2. An organelle found in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic molecules (sugars) from carbon dioxide and water.
  3. A structure in an animal cell composed of cylinders of microtubule triplets arranged in a 9 and 0 pattern. An animal usually has a centrosome with a pair of centrioles involved in cell division.
  4. The theory that all living things are composed of cells and that all cells come from other cells.
  5. A microscope that uses an electron beam to study the internal structure of thinly sectioned specimens.

5 True/False Questions

  1. Golgi apparatusA macromolecule consisting of one or more polypeptides linked to short chains of sugars.


  2. mitochondrial matrixThe fluid contained within the inner membrane of a mitochondrion.


  3. chromatinThe complex of DNA and proteins that constitutes eukaryotic chromosomes; often used to refer to the diffuse, very extended form taken by chromosomes when a cell is not dividing.


  4. granumAn infolding of the inner membrane of a mitochondrion in which is embedded the electron transport chain and the enzyme catalyzing the synthesis of ATP.


  5. organelleA long cellular appendage specialized for locomotion. The flagella of prokaryotes and eukaryotes differ in both structure and function. Like cilia, eukaryotic flagella have a 9 + 2 arrangement of microtubules covered by the cell's plasma membrane.


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