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YOUR BIOLOGY TEST

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This file contains 15 questions of biology subject.Free to do yours

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KELANTAN 2021 TRIAL
1 Rajah 1 menunjukkan struktur suatu sel haiwan.
Diagram 1 shows the strocture of an animal cell.




ai) Namakan komponen X dan Y.
Name components X andY.
[2marks / markah]

ANSWERS
X : Sentriol
Y : Lisosom

ii) Padankan komponen Z kepada ciri yang sesuai.
Match component Z to the suitable characteristic.




[1 marks / markah]

ANSWERS

, b) Komponen X gagal berfungsi menyebabkan gentian gelendong tidak terbentuk semasa
meiosis. Nyatakan kesan terhadap perlakuan kromosom semasa anafasa I.
Component X fails to function causing spindle fibres not to form during meiosis. State the
effect on the behavior of chromosomes during anaphase I.
[1 marks / markah]

ANSWERS
Kromosom homolog gagal berpisah/tak disjungsi

c) Komponen Y biasanya dijumpai di dalam sel leukosit. Terangkan bagaimana komponen Y
membantu sel leukosit menjalankan tugasnya semasa proses fagositosis.
Component Y usually found in leucocyte cell. Explain how Y component assist /eucocyte
cell to perform its function in phagocytosis process.
[2 marks / markah]

ANSWERS
P1: Bergabung dengan fagosom (membentuk fagolisosom)
P2: Merembeskan lisozim ke dalam fagosom
P3: Bakteria (di dalam fagosom) dimusnahkan/diuraikan oleh lisozim



2 Rajah 2.1 menunjukkan suatu mekanisme tindakan enzim yang dibantu dengan kehadiran P
untuk berfungsi dengan lebih berkesan.
Diagram 2.1 shows a mechanism of an enzyme reaction assisted by the presence of p to
function more effectively.




ai) Berdasarkan Rajah 2.1, Namakan P
Based on Diagram 2.1, Name P.
[1 marks / markah]

ANSWERS
P: Kofaktor/Koenzim

ii) Berikan satu contoh bagi P.
Give an example for P.
[1 marks / markah]

ANSWERS
Vitamin B /Ion magnesium

b) Rajah 2.2 menunjukkan satu eksperimen untuk mengkaji kesan pH terhadap
hidrolisis ampaian putih telur yang dididihkan oleh enzim pepsin. Ampaian putih telur
mengandungi protein.
Diagram 2. 2 shows an experiment to study the effect of pH on the hydrolysis of boiled
egg white suspension by a pepsin enzyme. Egg white suspension contains protein.

, Ampaian putih telur diisi dalam setiap Hrna tiub kaca sepanjang 50 mm di awal eksperimen.
Jadual 2.1 menunjukkan keputusan eksperiman.
Egg white suspensions were filled in each five 50 mm long glass tube at the beginning of
the experiment. Table 2.1 shows the experiment results.




i) Pada tiub kaca yang manakah enzim pepsin berrtindak dengan cekap?
On which glass tube the pepsin enzyme acts efficiently?
[1 marks / markah]

ANSWERS
Tiub kaca C

ii) Selepas 24 jam, didapati tiada sebarang perubahan pada panjang ampaian putih telur
dalam tiub kaca E. Terangkan.
After 24 hours, it was found that there is no change in length of the egg white suspension in
the glass tube E. Explain.
[3 marks / markah]

ANSWERS
P1: Perubahan nilai pH yang ekstrem
P2: Perubahan cas (ion H+) tapak aktif enzim dan permukaan substrat.
P3: Memutuskan ikatan kimia struktur protein
P4: Mengubah tapak aktif enzim//enzim ternyasli
P5: Kompleks enzim substrat tidak dapat dibentuk//tiada tindak balas berlaku.

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