chapter: nutrition

8/14/2019 Chapter: Nutrition

http://slidepdf.com/reader/full/chapter-nutrition 1/13

CHAPTER: NUTRITION

Name: …………………………………………… Class : ……

Chapter 2

Exercise 1

Learning Area: Nutrition and Food ProductionLearning Objective: Evaluating the importance of taking good nutrition and practicing good eating

habits.

1. The energy content of food is known as its ______________ value.

2. The calorific value of food can be determined by using a _______________

3. The calorific value of food is its energy content that is measured as _____________

4. The table below shows the calorific values of three types of food.

Bread 10.1 kJ g - 1

Half-boiled egg 6.6 kJ g - 1

Milk 2.7 kJ g - 1

If Amin takes 50 g of bread, 30 g of half-boiled egg and 250 g of milk, what is the total energy

that he takes?

5. The table below shows the calorific values of different types of food.

Food Calorific value (kJ / 100g)

Rice 1504

Canned sardine 1194

Tea (sugar free) 0

Banana 318

The information below shows the types of food taken by Arifah for breakfast. What are the

total calories that Arifah has taken?

1

300 g of rice50 g of sardine

1 cup of sugar free tea

40 g of banana

Score: …../20 x 100 = ……%



6. Complete the table below.

Factor Explanation

Gender

(a) __________ needs more energy than _______________

(b) Males are more ________ and have a higher __________ rate.

Body size (c) A person with ________ body size requires ________calories.

Age(d) _________,_________ and teenagers need more calories than

older persons because they are more _______________

Physical

activities(e) A physically active worker needs ___________ energy to work.

State of health(f) A _________person requires _________calories than a sick

person.

Surroundingtemperature

(g) A person who stays in a ___________ surrounding needs

more calories because they lose their body heat to the

environment.

(h)More energy is needed to replace ___________ lost due to cold

environment to maintain constant __________ temperature.

2



Name: …………………………………………….. Class : ……

Chapter 2Exercise 2

Learning Area: Nutrition and Food Production

Learning Objective: Evaluating the importance of taking good nutrition and practicing good eating

habits.

1. Eating an ___________ diet in which certain food substances are __________ or in wrong proportions.

2. Fill in the blanks with correct answer.

Disease Nutrient lacking Main symptoms

Marasmus Lack of carbohydrate Weak and dehydrated

(a) Severely ____________

Kwasyiorkor (b) Lack of ____________ Failure to grow.

(c)Swollen _____________

Anaemia (d)Lack of ___________ (e) Pale because lack of

_____________

Loss of appetite

Goitre (f) Lack of ____________ Large swelling at neck

Scurvy (g) Lack of ____________ (h) Swollen and _____________

gums.

Rickets Lack of vitamin D (i) Bent legs due to weak

____________

Night blindness (j) Lack of ____________ (k) Poor night ______________

3

Score: …../26 x 100 = ……%



3. Fill in the blank with the correct answer.

Obesity:

When a person is 20 % above the recommended weight for their height.

Any carbohydrate that is not used is converted to ___________ and stored around

organs like ___________,___________ and under the skin.

People who are obese have high concentration of_________________

Obese people will tend to develop diseases like ___________________, diabetes

and______________________

Can be prevented by controlling the diets and types of food eaten daily and by ___________

The BMI (Body Mass Index) may be used to determine whether you are obese.

2 2

( )

( )

mass kg BMI

height m= Below 20 = thin, 20–25 = normal, 26-30 = overweight, > 30 = obese

4. Fill in the blank with the correct answer.

Aneroxia Nervosa:

A psychological illness

An illness due to fear of gaining _________ and starve oneself to become ________

Occurs often in _____________

Symptoms include: becoming very _____________, muscles wasting and _______________

Can be cured through proper __________and counseling.

4



Name: …………………………………………… Class : ……

Chapter 2

Exercise 3Learning Area: Nutrition and Food Production

Learning Objective: Evaluating the importance of taking good nutrition and practicing good eatinghabits.

1. Complete the table below

Unhealthy eating habit Consequences

Too much meat and fried food

Too much salty food

Too much snacks and sugary food

Not enough fibre

2. Complete the flow chart.

5

Good eatinghabits

(a)Eatvarie

tyoff

oodi n

moderation.

__________

__________ _

__

____

____________________ _

__

____

Benefits

(d)Maintai n

goodhealth.

(e)

_________________

__________

_

.

Score: …../14 x 100 = ……%



3. The tables below show the amount of food eaten by a sixteen-year old Darlene and her twin

brother David in a day.

Darlene:

Type of food Calorific value per 100 g (kJ) Quantity of food eaten (g)

Carrot 96 200

Orange 147 50

Mineral water 0 1000

David:

Type of food Calorific value per 100g (kJ) Quantity of food eaten (g)

Rice 1530 600

mutton 1190 300

Chicken (deep fried) 880 500

Potato chips 1030 700

Ice cream 800 800

Mineral water 0 1000

(a) What is a calorific value of food?

_______________________________________________________________

(b) What is the apparatus used to measure calorific value?

_______________________________________________________________

(c) Calculate the total calories intake for Darlene and David for a day.

(d) The daily energy requirement for a female is 10800 kJ and a male teenager is 13900 kJ. What

can you conclude about their daily energy intake?

________________________________________________________________________

________________________________________________________________________

(e) Why does female teenager need less energy than male teenager?

_________________________________________________________________________

(f) Suggest one health problem Darlene and David may develop if they continue with their diet

for a long time.

_________________________________________________________________________

6



Name: ……………………………………………. Class : ……

Chapter 2


Learning Objective: Analysing the nutrient requirements of plants.

1. Fill in the blanks with suitable answers from the box below. The answers maybe use more than

once.

Plants carry out the process of ________________ to transform ________compounds

into organic ones. The plants use __________ __________, _________________ and

energy from the ________ to form __________________ and release oxygen. The word

equation for the process is:

___________ ____________ + ____________ ____________ + oxygen

Only plants with _________________ can carry out _____________________. The

______________ enable the plants to absorb ___________ energy from the sun to break

__________ molecules into ___________ and ___________ atoms. _______________

combine with ______________ ______________ to form _________________ needed by the

plant.

7

Glucose oxygen light chlorophyll inorganic sunHydrogen photosynthesis transpiration nitrogen kinetic

Starch water carbon dioxide

…………...

…………...

Score: …../36 x 100 = ……%



2. Complete the concept map.

8

Macronutrient Micronutrient

Definition: Definition:

(i)

(ii)

(iii)

(iv)

Example of elements(i)

(ii)

(iii)

(iv)

Example of elements

PLANT NUTRIENT



3. Match the mineral elements with its function.

Calcium

Needed for cell division, developmentand formation of roots

Phosphorus

Potassium

Magnesium

Component of chlorophyll

Synthesis of protein and nucleic acid.

Needed for synthesis of nucleic acids, proteins, hormones and chlorophyll

Needed to form cell wall and for growth

Nitrogen

9



Name: ……………………………………………… Class : ……

Chapter 2Exercise 5

Learning Area: Nutrition and Food ProductionLearning Objective: Analysing the nutrient requirements of plants.

1. Match the symptoms of mineral deficiency with its mineral elements.

2. Diagram shows a set-up of an experiment to study the nutrient requirement in a plant.

(a) State the variables for this experiment

(i) Manipulated variable ____________________________________

(ii) Responding variable _____________________________________ (b) What is your hypothesis for this experiment?

_________________________________________________________________

__________________________________________________________________

(c) After 2 weeks, predict your observation for

(i) test tube A

________________________________________________________________

10

Nitrogen

Phosphorus

Potassium

Stunted root growth, produce little

flowers and fruits and have leaf with

purple tips.

Stunted growth, premature death andhave leaf with yellow and brown margins.

Stunted growth, yellowing of mature leaf

followed by younger leaf (chlorosis).

Score: …../12 x 100 = ……%



________________________________________________________________

(ii) test tube B

________________________________________________________________

________________________________________________________________

(iii) test tube D

_______________________________________________________________

_______________________________________________________________

(d)What is the function of test tube D?

__________________________________________________________________

(e) Why do…

(i) The test tubes need to be aerated daily?

_______________________________________________________________

(ii) Wrapped with black paper?

__________________________________________________________

11



Name: ……………………………………………. Class : ……

Chapter 2


Learning Objective: Analysing balance in nature.

1. Study the nitrogen cycle below.

(a) Complete the table based on the nitrogen cycle.

Process Name of the process Bacteria involved

A

B Ammonification Decomposing bacteria

C

D

(b) The plant can absorb nitrogen compound in the form of X. What is X?

________________________________________________________________

(c) Process A can also happen without the bacteria. Name 3 process that can carry out process A

without the bacteria.

(i) _________________________________________________________

12

Atmospheri

c N2

X

NitritesAmmonium

Compound

PlantsAnimals

A

CB

B

C

D

Score: …../16 x 100 = ……%



(ii) _________________________________________________________

(iii) _________________________________________________________

2. Complete the diagram to show the importance of nitrogen cycle.

13

(a) Maintain the __________ of the

soil.

(c)Maintain the

___________ of nitrogen gas in

the

___________

(b) Reducing

___________ in

the

environment.

(d) Supply _______ to plants and animal to

build _________

Importance of

Nitrogen

Cycle

chapter: nutrition

Documents