Biology Bonus Mark Activity

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Across
  1. 3. reaction in which a water molecules is needed to break up a complex molecule into smaller molecules.
  2. 5. inorganic molecules made up of the elements carbon, hydrogen and oxygen. The hydrogen and oxygen atoms are present in the ratio 2:1.
  3. 6. process by which amino groups are removed from amino acids and converted to urea.
  4. 8. substance which can altar or speed up a chemical reaction, without itself being chemical changed at the end of the reaction.
  5. 10. suction force due to transpiration
  6. 14. the change in the three-dimensional structure of an enzyme or any other soluble protein, caused by heat or chemicals such as acid or alkalies
  7. 15. a group of cells with similar structures which work together to perform a specific function.
  8. 16. the process by which a cell becomes specialized for a specific function.
  9. 17. the net movement of particles(ions or molecules) from a region where they are of higher concentration to a region where they are of lower concentration, that is, down a concentration gradient.
  10. 18. proteins that function as biological catalysts. they can alter of speed up chemical reaction. they remains chemically unchanged at the end of the reaction.
  11. 19. loss of water vapour from a plant, mainly through the stomata of the leaves.
Down
  1. 1. process whereby digested food substances are absorbed into the body cells.
  2. 2. process whereby large food molecules are broken down into smaller, soluble molecules that can be absorbed into the body cells.
  3. 4. the rhythmic, wave-like muscular contractions in the wall of the alimentary canal.
  4. 5. the difference in concentration between two regions.
  5. 7. used to directly measure the rate of absorption of water by the plant.
  6. 9. inner walls of xylem vessels are strengthened by deposits of a substance
  7. 11. net movement of water molecules from a solution of higher water potential to a solution of lower water potential, through a partially permeable membrane.
  8. 12. process of engulfing or ingesting foreign particles such as bacteria, by the white blood cells.
  9. 13. organic molecules made up of the elements carbon, hydrogen and nitrogen. Another element, sulfur, may also be present.