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5 Written Questions

5 Matching Questions

  1. centriole
  2. nucleus
  3. nuclear envelope
  4. ribosome
  5. chromosome
  1. a 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.
  2. b A threadlike, gene-carrying structure found in the nucleus of a eukaryotic cell and most visible during mitosis and meiosis; also, the main gene-carrying structure of a prokaryotic cell. Chromosomes consist of chromatin, a combination of DNA and protein.
  3. c A cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. The ribosomal subunits are constructed in the nucleolus.
  4. d (1) An atom's central core, containing protons and neutrons. (2) The genetic control center of a eukaryotic cell.
  5. e A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.

5 Multiple Choice Questions

  1. A tiny membranous sac in a cell's cytoplasm carrying molecules produced by the cell. The vesicle buds from the endoplasmic reticulum or Golgi and eventually fuses with another membranous organelle or the plasma membrane, releasing its contents.
  2. A microscope that uses an electron beam to study the surface architecture of a cell or other specimen.
  3. An infolding of the inner membrane of a mitochondrion in which is embedded the electron transport chain and the enzyme catalyzing the synthesis of ATP.
  4. Makes RNA into DNA
  5. The fluid contained within the inner membrane of a mitochondrion.

5 True/False Questions

  1. lysosomeA cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. The ribosomal subunits are constructed in the nucleolus.

          

  2. light microscope (LM)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.

          

  3. thylakoidA dense region of DNA in a prokaryotic cell.

          

  4. central vacuoleA 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. plasma membraneThe membrane that sets a cell off from its surroundings and acts as a selective barrier to the passage of ions and molecules into and out of the cell; consists of a phospholipid bilayer in which are embedded molecules of protein and cholesterol.

          

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