Page 73 - Hybrid PBD Sains TG1_Edisi Guru

Sains Tingkatan 1 Bab 2

1. Ahmad telah membawa satu sampel air ke makmal sekolah untuk mengenal
pasti satu jenis organisma dalam sampel air itu. Apabila diperhatikan melalui 1. • Sel tumbuhan tidak
mikroskop, didapati sel organisma ini tidak berbentuk empat segi tetapi semestinya berbentuk
mempunyai dinding sel. Nukleusnya berada di sudut tepi dan mempunyai empat segi.
kantung cecair yang besar. Plant cells do not necessarily
Anda diminta untuk membantu Ahmad menentukan jenis sel ini dan • have square shape.
Dinding sel dan vakuol
wajarkan jawapan anda. KBAT Menganalisis yang besar hanya
Ahmad has brought a water sample to the school laboratory to identify a type of organism in the terdapat dalam sel
water sample. When observed through the microscope, the cell of this organism is not rectangular tumbuhan.
but has a cell wall. The nucleus is in the corner and has a large liquid pocket. Cell wall and large vacuoles
You are asked to help Ahmad determine the type of cell and justify your answer. are found only in plant cells.
Sel tumbuhan. Sel tumbuhan mempunyai dinding sel dan vakuol (kantung

cecair) yang besar.

Plant cell. A plant cell has a cell wall and a large vacuole (liquid pocket).

2. Rajah di bawah menunjukkan dua keadaan dengan keamatan cahaya yang 2. • Fotosintesis berlaku
berbeza. Dalam keadaan A, tiada gas oksigen atau gas karbon dioksida dengan kehadiran cahaya.
dilepaskan ke atmosfera. Dalam keadaan B, terdapat pengambilan gas Respirasi berlaku tanpa
mengira keadaan.
karbon dioksida dari atmosfera dan pelepasan gas oksigen ke atmosfera. Photosynthesis occurs in the
The diagram below shows two conditions with different light intensity. In condition A, no oxygen presence of light. Respiration
gas or carbon dioxide gas is released into the atmosphere. In condition B, there is an intake of takes place regardless of
carbon dioxide gas from the atmosphere and release of oxygen gas into the atmosphere. conditions.
KBAT Menilai & Menganalisis • Semakin meningkat
keamatan cahaya,
Karbon dioksida semakin meningkat
Oksigen Carbon dioxide
Oxygen kadar fotosintesis.
Semakin meningkat hasil
Fotosintesis Fotosintesis
Photosynthesis Photosynthesis fotosintesis.
Oksigen Karbon dioksida Oksigen Karbon dioksida If the intensity of light
increases, the rate of
Oxygen Carbon dioxide
Respirasi Oxygen Respirasi Carbon dioxide photosynthesis increases.
Respiration Respiration More photosynthetic products
are produced.
Keadaan A Keadaan B
Condition A Condition B
Berdasarkan pendapat anda, keadaan yang manakah berlaku pada waktu
tengah hari? Wajarkan jawapan anda.
Based on your opinion, which condition occurs during the afternoon? Justify your answer.

Keadaan B. Apabila keamatan cahaya tinggi, kadar fotosintesis tinggi. Lebih
banyak oksigen terhasil dan dibebaskan. Lebih banyak karbon dioksida

diambil dari atmosfera.

Condition B. When light intensity is high, the rate of photosynthesis is high. More oxygen is
produced and released. More carbon dioxide is taken from the atmosphere.

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02 HYBRID SAINS SC TG1.indd 32 28/07/2021 8:04 PM