SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

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FIGURE 1.1

Figure 1.1 shows a fluid mosaic model of plasma membrane.Rajah 1.1 menunjukkan model cecair mozaik membram plasma.

(a) Label structures P, Q, R and S using the following:Dengan menggunakan istilah yang diberi labelkan struktur P, Q, R dan S.

[2 marks]

FIGURE 1.2

An experiment has been carried out on plant cell, S which is soaked in solution T. The result is shown in Figure 1.2.Satu eksperimen telah dijalankan terhadap sel tumbuhan S yang direndam ke dalam larutan T. Hasilnya seperti Rajah 1.2 telah diperolehi.

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Pore

Cholesterol

Carrier protein

SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

(b) State the type of solution T.Nyatakan jenis larutan T

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(c)(i) Name the phenomenon that occurs on plant cell S. Namakan fenomena yang berlaku pada sel tumbuhan S tersebut.

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(ii) Explain how does the phenomenon in (c) (i) occurs.Huraikan bagaimana fenomena di (c)(i) di atas berlaku.

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(d)(i) Draw the shape of the plant cell after it is soaked in distilled water in the space provided below.Pada ruangan di bawah lukiskan bentuk sel tumbuhan itu selepas direndam semula dalam air suling.

[1 mark]

(ii) State the process that takes place in the cell. Nyatakan proses yang dialami oleh sel tersebut.

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SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

(e) The erythrocytes are put into distilled water. Explain the phenomenon that occurs to the cell.Sel-sel eritrosit di masukkan ke dalam air suling. Terangkan fenomena yang berlakupada sel tersebut.

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(f) A farmer sprayed the excess fertiliser to the vegetables in his farm. Explain the effects to the vegetables.Seorang petani menyembur baja secara berlebihan pada tanaman sayur-sayurannya. Terangkan kesan kepada sayur-sayuran tersebut.

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SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

2 Diagram 2 shows the structure of plasma membrane based on the fluid mosaic model.

Rajah 2 menunjukkan struktur membrane plasma berdasarkan model bendalir mozek.

Diagram 2Rajah 2

(a) (i) Name structure X and Y. Namakan struktur X dan Y.

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Y : ………………………………………………. [ 2 marks ]

(ii) What is the characteristic of structure X ?

Apakah ciri struktur X ?

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[ 1 mark ]

(iii) Name one example of substance P. Why does it move into the cell through

structure X ?

Namakan satu contoh bahan P. Mengapakah ia bergerak ke dalam sel melalui

struktur X ?

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SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

[ 2 marks ]

(b) State the characteristics of substance Q. Explain how does Q transported into

the cell.

Nyatakan ciri-ciri bahan Q. Terangkan bagaimana Q diangkut ke dalam sel.

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[ 2 marks ]

(c) A respiratory poison is added into the water that contains Paramecium sp.

Explain the effects of poison on the movement of substance R into Paramecium sp.

Racun respirasi ditambahkan ke dalam air yang mengandungi Paramecium sp.

Terangkan kesan racun tersebut terhadap pergerakan bahan R ke dalam

Paramecium sp.

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[ 2 marks ]

(d) The concentration of iodine ion in Nitella sp. , an alga is higher as compared to it

surrounding. However, it still can absorb the iodine from its surrounding.

Name the process and explain how it is happened.

Kepekatan ion iodine dalam Nitella sp. suatu alga adalah tinggi berbanding

di persekitaran. Walau bagaimanapun, ia masih boleh menyerap iodine dari

persekitarannya. Namakan proses yang terlibat dan bagaimana ia berlaku.

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[ 2 marks ]

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SOLAF BIOLOGI PERGERAKAN BAHAN MERENTAS MEMBRAN PLASMA

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