SPM Biology 2014


9 . The following information is about eating habits of individuals U and W.

Maklumat berikut ialah berkaitan tabiat makan bagi individu U dan individu W.

(a) Explain how the eating habits affect the health of:

Terangkan bagaimana tabiat makan itu mempengaruhi kesihatan:

(i) individual U

Individu U

(ii) individual W

Individu W

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(b) Diagram 9 shows a set of nasi lemak. A girl consumes a set of nasi lemak daily as breakfast for a long period of time. Discuss the good and the bad effects of the diet to her health.

Rajah 9 menunjukkan satu set nasi lemak. Seorang kanak-kanak perempuan mengambil satu set nasi lemak sebagai sarapan setiap hari dalam jangka masa yang panjang. Bincangkan kesan baik dan kesan buruk diet itu terhadap kesihatannya.

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Answer ( 1 )


    9.a)i) Individual U 

    -If an individual does not take meals at a regular time and has an empty stomach frequently, they may develop gastritis.

    -The lining of the stomach is protected by a mucus layer.

    -However, when an individual is hungry the stomach secretes gastric juice which contains hydrochloric acid.

    -If there’s no food to digest, the acidic gastric juice will slowly corrode the epithelial lining of the stomach wall.

    -This causes inflammation of the stomach and a breach in the stomach wall might create a gastric ulcer.


    ii)Individual W

    -This individual suffers from bulimia.

    -Vomiting causes a release of contents from the stomach.

    -Stomach acid corrodes the throat, damages the digestive tract and the individual could lose their teeth.

    -This individual may also experience malnutrition and have irregular periods due to hormonal imbalance.


    b) Good effects:

    -As a growing child, consuming protein and carbohydrates is essential.

    -Carbohydrates, the rice would be an important source of energy, for the girl to carry out her daily activities.

    -Proteins, the chicken and egg is important for growth of the child.

    Bad effects:

    -However, there is a lot of fried food. High fat and cholesterol food could lead to cardiovascular health problems.

    -Plaque starts to develop within the internal lining of the arteries and this may cause high blood pressure.

    -Also by consuming nasi lemak daily, her body would just end up accumulating protein, carbohydrate, and fats.

    -Too much carbohydrates would cause her to develop diabetes as her glucose levels will start to rise.

    -Too much protein increases the concentration of uric acid. Uric acid once crystallized may develop into kidney stones and give her kidney problems.

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