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5 Written questions

5 Matching questions

  1. peroxisome
  2. centriole
  3. transmission electron microscope
  4. eukaryotic cell
  5. prokaryotic cell
  1. a A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All organisms except bacteria and archaea are composed of eukaryotic cells.
  2. b An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
  3. c A microscope that uses an electron beam to study the internal structure of thinly sectioned specimens.
  4. d 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.
  5. e A type of cell lacking a membrane-enclosed nucleus and other membrane-enclosed organelles; found only in the domains Bacteria and Archaea.

5 Multiple choice questions

  1. An open channel in a plant cell wall through which strands of cytoplasm connect from adjacent cells.
  2. A membrane-enclosed sac occupying most of the interior of a mature plant cell, having diverse roles in reproduction, growth, and development.
  3. The fluid contained within the inner membrane of a mitochondrion.
  4. A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.
  5. An intermediate-sized protein fiber that is one of the three main kinds of fibers making up the cytoskeleton of eukaryotic cells. Intermediate filaments are ropelike, made of fibrous proteins.

5 True/False questions

  1. stromaThe fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water; Sugars are made in the stroma by the enzymes of the Calvin cycle.


  2. cytoskeletonEverything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.


  3. organelleA membrane-enclosed structure with a specialized function within a cell.


  4. microfilamentThe thinnest of the three main kinds of protein fibers making up the cytoskeleton of a eukaryotic cell; a solid, helical rod composed of the globular protein actin.


  5. cellular metabolismThe chemical activities of cells.


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