1. Intestinal juice contain Carbohydrase, protease

2. Digestion of protein starts at K

3. Constipation Need to eat more vegetables

4. Calculate the amount of milk should take to get 900mg of calcium. Milk (per 100 mL) Energy272 kJ Carbohydrate4.8g Protein3.4g Fat3.8g Calcium110 mg 900/110*100 = 818 mL

5. Albustix paper Positive result Yellow to Green

6. Calcium Deficiency disease Rickets

7. Which part stores faeces? N

8. Scurvy Need to eat more Fruit, vegetable

9. Anaemia Need to eat more Meat, liver

10. Girls needs more iron than boys because Girls loss blood in menstruation. They need more iron to produce blood

11. Teenager need more protein because They need more protein for growth

12. What food substances are absorbed by Y? Water soluble substances: glucose, amino acid, vitamin C, minerals, water Y

13. What is B? Gall bladder

14. Glucose Food test Clinistix paper

15. Intestinal juice Secreted by Intestinal gland in small intestine

16. Spot test Positive result Translucent spot disappeared

17. Anaemia Not enough Iron

18. State two features of X that allow it to absorb food substances easily. X is finger like to increase surface area to absorb food. There are lots of X in small intestine to increase surface area to absorb food. X

19. Vitamin C Function Forming connective tissue

20. Mouth Digestive juice Saliva

21. Chemical digestion by Digestive enzymes

22. What is the fluid inside Z? Lymph Z

23. Mouth Physical digestion by Chewing of teeth

24. Bile Physical digestion by Emulsify fat to oil droplet to increase surface area for lipase to act on

25. Small intestine Digestive juice Intestinal juice

26. Calculate the amount of milk should take to get 3600kJ ? Milk (per 100 mL) Energy272 kJ Carbohydrate4.8g Protein3.4g Fat3.8g Calcium110 mg 3600/272*100 = 1323.5mL

27. Small intestine is long because It can provide more time to digest and absorb food substances.

28. Bile contain Bile salt, hydrogencarbonate salt, bile pigment

29. Lipase Can be found in Pancreatic juice

30. contain Amylase, protease, lipase, Hydrogencarbonate salt

31. Gastric juice contain Protease, hydrochloric acid

32. What is Z? Lacteal Z

33. Iron Function Form haemoglogin

34. Amylase Can be found in Saliva, pancreatic juice

35. Food move in alimentary canal by peristalsis

36. Which part is acidic? stomach

37. Energy requirement depands on Age, gender, occupation, body status

38. What part does digestion of lipid start? D

39. Vitamin A Function Form pigment for night vision

40. Teenager need more protein because They need more protein for growth

41. Teenager need more calcium for The growth of bones and teeth

42. Villus shape Finger like to increase surface area for absorption

43. What is Y? Blood capillaries Y

44. Starch Food test Iodine test

45. Matching Glucose..Protein Glycerol..Starch Amino acid..Lipid Fatty acid.

46. Saliva Secreted by Salivary gland

47. What is ingestion? Food is taken in through the mouth.

48. Bile Secreted by Liver

49. What are the 7 types of food substances? carbohydrate 碳水化合物 protein 蛋白質 lipid 脂質 mineral 礦物質 vitamin 維生素 dietary fibre 食用纖維 water

50. What part is ingestion take place? H

51. Stomach Physical digestion by Churning of muscle

52. The average energy requirment of Sam is 12000kJ but his average daily intake is 14000 kJ. Explain how his diet affects his body weight. The energy intake (14000kJ) of the man is more than his daily need (12000 kJ). Excess energy will be convert to fatty tissue and stored under skin and around internal organs. His weight increases / he will be overweight

53. Saliva contain Salivary amylase, water

54. What is E? Ileum

55. Dietary fibre Deficiency disease Constipation

56. Vitamin D Deficiency disease Rickets

57. Constipation Not enough Dietary fibre

58. Constructive worker need more energy because They need more energy for stronger muscle contraction

59. Night blindness Need to eat more Fish liver oil, carrot

60. Rickets Need to eat more Dairy product, Cheese, Milk

61. Glucose Function Produce energy by respiration

62. What is egestion? The undigested materials are removed from the body as faeces.

63. What is assimilation? The absorbed food molecules are taken up by cells for metabolism.

64. What are the importance of food? Providing energy for doing activities and keeping us warm; Providing raw materials for growth and repair of body tissues; maintaining health

65. What is N? Rectum

66. Which part absorbs the largest amount of nutrient? E

67. Iron Deficiency disease Anaemia

68. Gastric juice Secreted by Gastric gland in stomach

69. Pregnant women need more protein because They need more protein for foetus growth

70. Rickets Not enough Calcium/ Vitamin D

71. Pancreatic juice Secreted by Pancreas

72. What part is acidic? K

73. Scurvy Not enough Vitamin C

74. Clinistix paper Positive result Red to purple

75. Peter: Weight:50kg, Daily energy requirements: 11500 kJ Calculate Peter’s daily energy requirement per unit body weight (kJ/kg)? 11500/50 = 230 kJ/kg

76. Lipid Food test Spot test

77. What is absorption? The digested food molecules enter the circulatory system.

78. What food substances are absorbed by Z? Lipid soluble substances: fatty acid, glycerol, vitamin A, D, E, K Z

79. Vitamin C Food test DCPIP test

80. Baby need more energy per unit body weight because The relative surface area of baby is large, they need more energy to produce heat to compensate heat loss

81. What is digestion? Food is broken down into soluble and simple molecules.

82. DCPIP test Positive result Blue to colourless Decolorized

83. Reducing sugar Food test Benedict’s test

84. Blood in Y will first transport to….through…… liver; hepatic portal vein Y

85. What is the fate of excess protein? Excess amino acids cannot stored and will be broken down in liver by deamination : (i) Urea formed is carried via the bloodstream to the kidneys and is excreted in the urine. (ii) The remaining part of the amino acid is converted to glycogen and stored in liver.

86. Benedict’s test Positive result Brick red precipitate

87. Liver Digestive juice Bile

88. Protein Food test Albustix paper

89. Stomach Digestive juice Gastric juice

90. What is X? Villus X

91. Iodine test Positive result Brown to blue black

92. Protein Functions Growth and repair, produce enzyme, hormone, haemoglobin

93. Lipid Function Produce energy, shock absorber, heat insulator

94. Protease Can be found in Gastric juice, pancreatic juice, intestinal juice

95. Calcium Function Form bones and teeth

96. Water Function As solvent, for transport, heat loss by sweating

97. Physical digestion function Increase surface area of food for digestive enzyme to act on

98. Vitamin C Deficiency disease Scurvy

99. Vitamin A Deficiency disease Night blindness

100. What is the fate of excess glucose? Excess glucose is converted to glycogen by the liver for storage. Some of the excess glucose is converted to lipid.

101. Calculate the energy in 300mL milk Milk (per 100 mL) Energy272 kJ Carbohydrate4.8g Protein3.4g Fat3.8g Calcium110 mg 272*3 = 816 kJ

102. What is L? Pancreas

103. Villus number Large number to increase surface area

104. Dietary fibre Function Stimulate peristalsis in gut (intestine)

105. Night blindness Not enough Vitamin A

106. What is the fate of excess protein? Excess amino acids cannot stored and will be broken down in liver by deamination : (i) Urea formed is carried via the bloodstream to the kidneys and is excreted in the urine. (ii) The remaining part of the amino acid is converted to glycogen and stored in liver.

107. Suggest a reason why construction workers require more energy than office clerks. Construction worker need more energy for stronger muscle contraction.

108. Explain how stomach is protected from digestion. Mucus can protect stomach from digestion

109. The human digestive system consists of Alimentary canal and Digestive glands

110. Pancreas Digestive juice Pancreatic juice

111. Vitamin D Function Help Calcium absorption