1. TERENGGANU 2009
1. Diagram 1 shows the different levels of protein molecules structure .
Rajah 1 menunjukkan aras yang berlainan bagi struktur molekul protein.
Q R
P
Diagram 1(a)
Rajah 1(a)
(a)(i) Name the main elements in the protein molecules in the Diagram 1.
Nyatakan elemen-elemen utama molekul protein di dalam Rajah 1.
………………………………………………………………………………………
[1 mark]
(ii) State the level of organisation in the protein molecules P,Q and R .
Nyatakan aras organisasi di dalam protein molekul P, Q dan R.
P: ………………………………………….
Q:…………………………………………..
R:…………………………………………...
[2 marks]

2. (b)
R molecule can be broken down into its monomer through hydrolysis
reaction by the digestive enzymes .
Molekul R boleh dipecahkan kepada monomer-monomernya melalui
tindakbalas hidrolisis oleh enzim pencernaan
Explain the two groups of the monomer .
Terangkan dua kumpulan monomer-monomer di atas.
First group:
Kumpulan pertama:
………………………………………………………………………………………….
…………………………………………………………………………………………..
[2 marks]
Second group:
Kumpulan Kedua:
…………………………………………………………………………………………..
…………………………………………………………………………………………..
[2 marks]

3. c) One example of protein molecules with P structure is used widely in manufacturing of biological
detergent such as in the Diagram 1(b).
Satu contoh molekul protein berstruktur P digunakan meluas dalam pengeluaran pencuci biologi
seperti di dalam Rajah 1(b)
BRAND X
Biological
washing powder
Diagram 1(b)
warm water)
(i) State one example of the structure P and its function.
Nyatakan satu contoh struktur P dan fungsinya .
……..…………………………………………………………………………………………………………………………
............................................................................................................................. .......
[2marks]
(ii) Suggest why Brand X washing powder needs warm water to ensure the cleaning is effective?
Cadangkan mengapa serbuk pencuci jenis X memerlukan air suam untuk memastikan
pencucian adalah efektif?
……………………………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………………………………….
……………………………………………………………………………………………………………………………………………….
[3marks]

4. (TERENGGANU)
6. (a)
Enzymes which are isolated from cells can function outside the cells. Enzymes can be
used as catalysts in industries. The use of enzymes in industrial processes is known as
enzyme technology.
Enzim yang diasingkan daripada sel boleh berfungsi di luar sel. Enzim boleh digunakan
sebagai pemangkin di dalam industri.Penggunaan enzim di dalam perindustrian
dikenali sebagai teknologi enzim.
Based on the statement:
Berdasarkan penyataan di atas:
(i) list the general characteristic of enzymes .
senaraikan ciri-ciri umum enzim
[4 marks]

5. (iii) Using suitable examples, discuss the uses of enzymes in industrial processes an our daily life.
Dengan menggunakan contoh-contoh yang sesuai. bincangkan kegunaan enzim di dalam proses
industri dan kehidupan harian.
(6 mark)
S
R
S
P Q
FIGURE 6
(b) Figure 6 shows the organelles involved during the synthesis and secretion of an enzyme in an
animal cell.
Based on Figure 6, explain how extracellular enzyme are produced by emphasizing on the role of
P, Q, R and S.
Rajah 6 menunjukkan organel-organel yang terlibat semasa penghasilan dan perembesan enzim
di dalam sel haiwan.
Berdasarkan Rajah 6, terangkan bagaimana enzim luar sel dihasilkan dengan menekankan
peranan P, Q, R dan S.