The document discusses the chemical composition of cells, including inorganic elements like water and organic compounds like carbohydrates, lipids, proteins, nucleic acids, and enzymes. It describes the basic components and functions of these molecules, as well as factors that affect enzymatic reaction rates such as pH, temperature, substrate concentration, and enzyme concentration. The key roles of water, carbohydrates as an energy source, lipids for energy storage and structure, proteins for structure, catalysis and transport, and nucleic acids for genetic inheritance and protein synthesis are summarized.

1. chemical composistion of the cell

3. Elements of the cell

6. Water molecules

8. Organic compound in the cell Basic element: C, H, O

10. Carbohydrate Monosaccharide Disaccharide Polysaccharide

12. Monosaccharides Glucose Fructose Galactose

19. Disaccharide Sucrose Maltose Lactose

23. polysaccharides . strach - plant cell storage . glycogen - animal cell storage . cellulose - cell wall

26. Fatty acid Glycerol lipids

27. List the importance of lipids

32. proteins . contain C, H, O, N, S . smallest unit = amino acid . combine -by peptide bond . dipeptide . polypeptide

33. List the importance of proteins:

39. Polypeptide chain

40. Various protein structures e.g.: hormone insulin e.g.: hormone, antibodies, enzyme e.g.: hemoglobin

46. enzyme

47. what is enzyme?

50. student presentation

51. . proteins . biological catalyst . speed up biochemical reation

53. “ ase” endings: sucrase maltase lactase naming of enzymes Name according to substrate it catalyst A few enzymes are named before : pepsin, trypsin, rennin

61. Factors affecting the rate of enzymatic reactions

63. Rate of enzyme reaction pH 7 1 14 Pepsin [stomach] Amylase [mouth] Amylase [duodenum]

65. TEMPT [c] Rate of enzyme reaction 37 60 0

68. Design an experiment : The effect of pH/ temperature on enzymatic activities