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5 Written Questions

5 Matching Questions

  1. membrane junction
  2. gene
  3. desmosome
  4. ribonucleic acid(RNA)
  5. active transport
  1. a single-stranded nucleic acid that contains the sugar ribose; acts in protein synthesis
  2. b Energy-requiring process that moves material across a cell membrane against a concentration difference or gradient
  3. c Cells are tightly bound, prevent fluids and most molecules from moving between cells. Useful in places such as the stomach and kidneys. types are desmosomes, tight junctions, and gap junctions
  4. d biological unit of hereditary information located in chromatin consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses). that transmits hereditary information.
  5. e Anchoring junctions that prevents cells subjected to mechanical stress from being pulled apart; two adjacent cells are attached. formed from protein plaques in the the cell membranes linked by protein filaments

5 Multiple Choice Questions

  1. A solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution. examples interstitial fluid and intravenous solutions
  2. 3rd phase; the chromatids of each chromosome separate at the centromere and move in opposite poles of the spindle.
  3. A substance produced by a living organism that acts as a catalyst to bring about a specific chemical reaction
  4. nucleic acid found in all living cells: carries the organism's hereditary information.
  5. A tiny cell structure that carries out a specific function within the cell

5 True/False Questions

  1. chromosomeA threadlike, gene-carrying structure found in the nucleus. consists of one very long DNA molecule and associated proteins.

          

  2. metaphaseSecond Stage of Cell division: Centromeres of duplicated chromosomes are aligned at plate. chromosomes become attached to spindle fibers

          

  3. interphaseA the resting phase between two mitotic or meiotic divisions during which the cell grows, copies its DNA, and synthesizes proteins

          

  4. cell divisionMovement of molecules from an area of higher concentration to an area of lower concentration.

          

  5. concentration gradienta gradient in concentration of a solute that molecules move down and the greater the difference in concentration between the two areas, the faster diffusion occurs. It is An increase or decrease in the density of a chemical substance in an area., A difference in concentration between two areas.

          

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