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5 Written questions

5 Matching questions

  1. spirochete
  2. bacillus
  3. centriole
  4. cell theory
  5. cytoskeleton
  1. a aerobic rod-shaped spore-producing bacterium
  2. b A coiled, spiral-shaped bacterium that has endoflagella and flexes as it moves.
  3. c a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence
  4. d idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells
  5. e A structure in an animal cell composed of cylinders of microtubule triplets arranged in a 9 + 0 pattern. An animal cell usually has a pair of centrioles involved in cell division.

5 Multiple choice questions

  1. A sticky layer that surrounds the cell walls of some bacteria, protecting the cell surface and sometimes helping to glue the cell to surfaces.
  2. programmed cell death involving a cascade of specific cellular events leading to death and destruction of the cell
  3. The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, it exists as a mass of very long, thin fibers that are not visible with a light microscope.
  4. a circular DNA molecule that is usually found in bacteria and that can replicate independent of the main chromosome
  5. Photosynthetic, oxygen-producing bacteria (formerly known as blue-green algae).

5 True/False questions

  1. endoplasmic reticulumSystem of internal membranes within the cytoplasm. Membranes have the presence of ribosomes; functions in transport of substances such as proteins within the cytoplasm


  2. stromaan area within a chloroplast that lies between the thylakoid membranes; serves as the site of the Calvin cycle in photosynthesis which involves the synthesis of carbohydrates


  3. pseudopodgroup of closely related plant organelles that are used for storage of starches, lipids, or pigments; includes chloroplasts, chromoplasts, and amyloplasts (leucoplasts).


  4. intermediate filamentrope-like assemblies of fibrous polypeptides in the cytoskeleton that provide support and strength to cells; A component of the cytoskeleton that includes all filaments intermediate in size between microtubules and microfilaments.


  5. nucleusorganelle that controls all the activities of a cell and contains hereditary material made of DNA