Intestinal juice

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) Milk (per 100 mL)
Energy 272 kJ
Carbohydrate 4.8g
Protein 3.4g
Fat 3.8g
Calcium 110 mg
900/110100 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?
Y
Water soluble substances glucose, amino acid,
vitamin C, minerals, water
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
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.
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?
Z
Lymph
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) Milk (per 100 mL)
Energy 272 kJ
Carbohydrate 4.8g
Protein 3.4g
Fat 3.8g
Calcium 110 mg
3600/272100 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
Pancreatic juice

• contain

Amylase, protease, lipase, Hydrogencarbonate salt
31
Gastric juice

• contain

Protease, hydrochloric acid
32
What is Z?
Z
Lacteal
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?
Y
Blood capillaries
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 ????? protein ??? lipid ?? mineral
??? vitamin ??? dietary fibre ???? 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 Weight50kg, Daily energy requirements
11500 kJCalculate Peters 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?
Z
Lipid soluble substances fatty acid, glycerol,
vitamin A, D, E, K
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

Benedicts test
84
Blood in Y will first transport to.through
Y
liver hepatic portal vein
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
Benedicts 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?
X
Villus
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) Milk (per 100 mL)
Energy 272 kJ
Carbohydrate 4.8g
Protein 3.4g
Fat 3.8g
Calcium 110 mg
2723 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