Page 7 - Praktis Topikal A+ Sains Tg 1_Pan Asia Publications

10. Apakah kesan yang akan berlaku ke atas III Pencairan ais di kawasan kutub menjadi
bumi apabila kandungan karbon dioksida lebih cepat.
bertambah secara berlebihan? Melting of ice in the polar region is getting
What are the effects to the earth when the carbon faster.
dioxide content increase excessively? IV Banjir kilat berlaku dengan kerap.
I Lapisan ozon menipis. Flash flood happens frequently.
Ozone layer depletes. A I dan II C II dan III
II Suhu persekitaran meningkat. I and II II and III
Temperature of the surroundings increases. B I dan III D II dan IV
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I and III II and IV
Soalan Subjektif

2.1 Sel – Struktur, Fungsi dan Organisasi
Cell – Structure, Function and Organisation B.Teks: Ms 46 – 58

Apakah Sel? / What is a Cell?
1. Rajah di bawah menunjukkan sel kanser yang membahagi secara berterusan tanpa kawalan. TP2
Diagram below shows the cancer cells that divide continuously and uncontrollably.
Kanser
Sel kanser Tumor Cancer
Cancer cell Tumour
Sel kulit
Skin cell

Salur darah
Blood vessel
Penyakit kanser terjadi apabila sel normal di dalam badan membahagi secara berterusan

tanpa terkawal untuk menghasilkan sel abnormal yang disebut sel kanser . Sel abnormal
ini akan merebak untuk menggantikan sel normal. Sel ini kemudian menjadi tumor .
Akhirnya tumor merebak ke bahagian lain dan menyebabkan kanser.

Cancer disease is formed when the normal cells divide continuously and uncontrollably to form
abnormal cells that are called cancer cells . These abnormal cells will spread and replace the normal
cells. These cells then turn to tumour . Finally tumour spreads to other parts and causes cancer.

Struktur Sel haiwan dan Sel Tumbuhan
The Structure of Animal Cells and Plant Cells
2. Rajah di bawah menunjukkan langkah-langkah penyediaan slaid sel pipi.
Diagrams below show the steps of preparing a slide of cheek cells.
P Jarum tenggek Q Pencungkil gigi R Titiskan air suling
Mounting needle Toothpick Drop a distilled
Kaca penutup water
Cover slip Titisan air suling
Drop of distilled
water
S Titiskan setitik larutan T U
metilena biru Kertas turas Slaid kaca
Add a drop of methylene Filter paper Glass slide
blue solution
Air suling dan
sel pipi
Distilled water
and cheek cells
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