MODUL F2 SCIENCE C2

8/14/2019 MODUL F2 SCIENCE C2

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SMKBE@ELY2009

1

Name :

Form :


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2.1 CLASSES OF FOOD [pg.40 44]

1) Nutrition is the process of obtaining and using nutrient(________________________________________

______________________) from food.

2) Food can be divided into ___________ classes. There are: # state the function for each of the following

classes of food in the box provided.

3) The table below shows the sources, functions and effects of deficiency of vitamins.

Vitamin Sources Functions Effects of deficiency

A

B

C

D

E

K

4) Vitamins are divided into two group: ________________________ and _________________________

5) The water-soluble vitamins are ________________________________


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6) The fat-soluble vitamins are __________________________________

7) Minerals are needed by___________________________________________________________________

8)

FOOD TEST

Mineral Sources Functions Effects of deficiency

Calcium

Sodium

Iron

Iodine

Phosphorus

Potassium


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2.2 THE IMPORTANCE OF A BALANCED DIET [pg. 45 47]

1) A balanced diet contains ____________________________________________________________________________________________________________________________________________________

2) A balanced diet depends on many factors such as:i. _______________________________ v. ___________________________

ii. _______________________________ vi. ___________________________

iii. _______________________________ vii. ___________________________iv. _______________________________

3) Daily energy requirements


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4)

A person with goiter A child with kwashiorkor

ENERGY VALUE OF FOOD

1) Caloric value or energy value is __________________________________________________________

____________________________________________________________________________________

2) Energy value of carbohydrates, proteins and fats

3) 1 calorie = 4.2 joules or

1 cal = 4.2 J

PLANNING A BALANCED DIET

Group Age (years) Sex Body activity Energy requirements (kJ)

Class of food Energy value (kJ g-1)


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2.3 HUMAN DIGESTIVE SYSTEM [pg. 48 50]


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1) Digestion is __________________________________________________________________________

____________________________________________________________________________________2) Digestion occurs in an __________________________________________________________________

3) Alimentary canal:

4) Physical digestion _____________________________________________________________________

5) Chemical digestion ____________________________________________________________________

6) Enzymes are _________________________________________________________________________

7) Enzymes react effectively at a temperature of __________. There are three main kinds of enzymes in ougut. They are:

a. ____________________________________________________________________________

b. ____________________________________________________________________________c. ____________________________________________________________________________

8) Label the parts a) to l)

9) Name the digestive organ based on its function in the table below.

a)b)

c)

d)

e)

f)

g)h)

i)

j)

k)

l)


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Digestive organ Function

Food is cut into small pieces

Channels food to the stomach. The bolus moves down in a wave-like

action called peristalsis.

Digestion protein begins

Receives bile from the gall bladder and pancreatic juice from the

pancreas.Secretes pancreatic juice containing enzymes

Secretes bile to emulsify fat

Digestion of fat, protein and starch and absorption of food

Absorbs water and formation of faeces

Stores faeces

Removes feaces from the body

10) Summary of digestion

Place of

digestion

Glands Secretion Enzyme Digestive system

Mouth Salivary glands Saliva Salivary amylaseStomach Gastric glands Gastric juice Proteases

Hydrochloric acid

Duodenum Liver Bile

Pancreas Pancreaticjuice

Lower part of

smallintestine

Intestinal glands Intestinal

juice

11) Name the end products of the digestion of

a. Carbohydrates : ____________________________ b. Protein : ____________________________

c. Fats : ____________________________

PMR PRACTICE!NO. 21, 22, 23, and 24


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2.4 ABSORPTION OF DIGESTED FOOD [pg. 51]

1) Absorption of digested food is [pg. 101] ______________________________________________________2) Villi is _________________________________________________________________________________

3) The villi greatly _________________________________________________________________________

_______________________________________________________________________________________

4) Diffusion is _____________________________________________________________________________


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5) Once inside the bloodstream, _______________________________________________________________

6) From the liver, ___________________________________________________________________________7)

8)

2.5 REABSORPTION OF WATER AND DEFECATION [ pg.53 54]

1) The residue from the small intestine is _____________________________________________________2) From here, the watery residue ____________________________________________________________

3) The residue remains in the large intestine for _________________________

4) As the residue passes through the large intestine, a ___________________________________________

____________________________________________________________________________________


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5) As much as __________________________________________________________________________

6) In diarrhoea, _____________________________________________________________________________________________________________________________________________________________

7) Faeces is ____________________________________________________________________________

8) They are store in ______________________________________________________________________

9) Muscular contractions of the walls of the large intestine push ___________________________________10) Defecation is _________________________________________________________________________

11) A simplified diagram of the process in alimentary canal

EATING HABITS AND CONSTIPATION

1) Constipation is _______________________________________________________________________

2) This problem is mainly due to ___________________________________________________________

3) Roughage or _________________________________________________________________________4) Without roughage, ____________________________________________________________________

5) As a result, __________________________________________________________________________

6) This may cause _______________________________________________________________________

7) Serious constipation ___________________________________________________________________8) Constipation can usually be relieved by ____________________________________________________

2.6 HEALTHY EATING HABITS [pg. 54 56]

1) Unhealthy eating habit are ______________________________________________________________

2) The key to healthy is to _________________________________________________________________

____________________________________________________________________________________3) Food pyramid:


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4) State the problems caused by each of the following conditions.

a. Overeating : ___________________________________ b. Eating too little food : ___________________________________

c. Drinking carbonated sweet drinks : ___________________________________

d. Not eating enough vegetables : ___________________________________e. Not drinking enough water : ___________________________________

5) Read the statements carefully, and then fill in the blanks with the correct answers.a. Vegetarians do not eat ________________________________________

b. Muslims do not eat ___________________________________________

c. Hindus do not eat ____________________________________________

PMR PRACTICE!No. 25, 26, 27, 28


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REINFORCEMENT PRACTICE


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MODUL F2 SCIENCE C2