Page 20 - PWR UP TG3 SAINS

Sains Tingkatan 3 Bab 1
5. Lidah adalah organ deria yang peka terhadap rasa. SP 1.2.1 TP5
Tongue is a sensory organ that is sensitive towards the taste.
(a) Namakan sel reseptor yang banyak terdapat di atas permukaan lidah.
Name the receptor cells that are found abundantly on the surface the tongue.
Tunas rasa / Taste buds

(b) Permukaan lidah manusia mempunyai kawasan tertentu yang peka terhadap sesuatu rasa. Rajah di
bawah menunjukkan permukaan lidah dengan kawasan yang spesi k terhadap rasa yang berbeza.

The surface of human tongue has a speci c area that is sensitive to a certain taste. The diagram below shows the surface of the tongue

with speci c areas towards di erent taste.

P
R

Q

S

Bagi setiap makanan dalam rajah di bawah, tuliskan bahagian lidah yang peka terhadap rasanya. TP2
For each food in the diagram below, write the part of the tongue that is sensitive towards the taste.
(i) (ii) (iii) (iv)

S P Q R

(c) Kawasan tengah lidah sensitif terhadap rasa umami. Nyatakan apakah rasa umami dan namakan satu
contoh bahan yang berkaitan. TP3
The centre part of the tongue is sensitive towards umami. State what is umami and name an example of substance with related taste.
Lazat / Delicious; Glutamat / Glutamate

6. (a) Kulit mempunyai lima jenis reseptor, iaitu reseptor sakit, sentuhan, sejuk, panas dan tekanan. Bagi setiap
gambar berikut, nyatakan reseptor yang berkaitan. SP 1.2.1 TP2
Skin has ve types of receptors, which are pain, touch, cold, heat and pressure receptor. For each of the following picture, state the

related receptor.
(i) (ii) (iii) (iv)

Sentuh / Touch Haba / Heat Tekanan / Pressure Sakit / Pain

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