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5 Written questions

5 Matching questions

  1. deoxyribonucleic acid
  2. osmosis
  3. chromosome
  4. concentration gradient
  5. membrane junction
  1. a a 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.
  2. b nucleic acid found in all living cells: carries the organism's hereditary information.
  3. c Diffusion of water through a selectively permeable membrane
  4. d 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
  5. e A threadlike, gene-carrying structure found in the nucleus. consists of one very long DNA molecule and associated proteins.

5 Multiple choice questions

  1. Requires NO energy, Movement of molecules from high to low concentration, Moves with the concentration gradient.example is ATP. and diffusion is driven by kinetic energy
  2. Movement of molecules from an area of higher concentration to an area of lower concentration.
  3. A sequence of three bases of a tRNA molecule that pairs with the complementary three-nucleotide codon of an mRNA molecule during protein synthesis.
  4. 3rd phase; the chromatids of each chromosome separate at the centromere and move in opposite poles of the spindle.
  5. 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 True/False questions

  1. OrganelleA tiny cell structure that carries out a specific function within the cell


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


  3. codon(biology) the basic structural and functional unit of all organisms


  4. Cell Theory1. All living things are made of cells


  5. ribonucleic acid(RNA)single-stranded nucleic acid that contains the sugar ribose; acts in protein synthesis


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