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5 Written questions

5 Matching questions

  1. deoxyribonucleic acid
  2. concentration gradient
  3. transcription
  4. tight junction
  5. anticodon
  1. a A sequence of three bases of a tRNA molecule that pairs with the complementary three-nucleotide codon of an mRNA molecule during protein synthesis.
  2. b A type of intercellular junction in animal cells that prevents the leakage of material between cells, Impermeable, bind cells together into leak-proof sheets
  3. c (genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA, DNA acts as a template for the synthesis of RNA
  4. d nucleic acid found in all living cells: carries the organism's hereditary information.
  5. e 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.

5 Multiple choice questions

  1. A threadlike, gene-carrying structure found in the nucleus. consists of one very long DNA molecule and associated proteins.
  2. A the resting phase between two mitotic or meiotic divisions during which the cell grows, copies its DNA, and synthesizes proteins
  3. Second Stage of Cell division: Centromeres of duplicated chromosomes are aligned at plate. chromosomes become attached to spindle fibers
  4. 3rd phase; the chromatids of each chromosome separate at the centromere and move in opposite poles of the spindle.
  5. 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

5 True/False questions

  1. Cell Theory(biology) the basic structural and functional unit of all organisms


  2. cell divisionProcess by which a cell divides into two new daughter cells


  3. active transportEnergy-requiring process that moves material across a cell membrane against a concentration difference or gradient


  4. isotonic solutionA solution in which the concentration of solutes is less than that of the cell that resides in the solution, causes a cell to swell because of osmosis.


  5. mitosisCell's division (PMAT) of the nucleus. Final product is 2 daughter cells that are exactly like the parent cell., asexual reproduction and contains same number of chromosomes.