Section A / Bahagian AAnswer all questions / Jawab semua
soalan
1. An experiment was carried out to investigate the percentage
of vitamin C in fruits by using dichlorophenolindophenol (DCPIP)
solution. 0.1% of ascorbic acid solution and a few types of fruit
juice such as orange juice, pineapple juice and papaya juice were
prepared. Satu eksperimen telah dijalankan untuk mengkaji peratus
vitamin C dalam buah-buahan dengan menggunakan
diklorofenolindofenol (DCPIP). Larutan asid askorbik 0.1% dan
beberapa jenis jus buah-buahan seperti jus oren, jus nanas dan jus
betik turut disediakan.
Diagram 1 shows the materials and apparatus used in this
experimentRajah 1 menunjukkan bahan dan radas yang digunakan dalam
eksperimen ini
Based on Diagram 1, the volume of 0.1% ascorbic acid solution
used to decolourise 1 ml of DCPIP solution is 1 ml. Berdasarkan
Rajah 1, isi padu larutan asid askorbik 0.1% yang digunakan untuk
melunturkan larutan DCPIP 1 ml ialah sebanyak 1 ml.
Table 1.1 shows the volumes of the fruit juices which
decolourise 1 ml of DCPIP solutionJadual 1.1 menunjukkan isi padu
jus buah-buahan yang melunturkan 1 ml larutan DCPIPType of fruit
juiceJenis jus buah-buahanVolume of fruit juice used to decolourise
1 ml of DCPIP solution (ml)Isi padu jus buah yang diperlukan untuk
melunturkan 1 ml larutan DCPIP (ml)
OrangeOren 1.5
PineappleNanas 2.5
Papaya Betik 3.5
a) State the aim of this experiment / Nyatakan tujuan eksperimen
ini
________________________________________________________________________________________________________________________________________________________________________________________________________________________1
mark/ 1markah
b) State the following variablesNyatakan pembolehubah
berikut
i. Manipulated variable / pembolehubah dimanipulasikan
_________________________________________________________________1
mark/ 1 markah
ii. Responding variable / pembolehubah bergerak balas
_________________________________________________________________1
mark/ 1 markah
c) State two constant variables in this experimentNyatakan dua
pemboleh ubah dimalarkan dalam eksperimen ini
1.
____________________________________________________________________
2.
____________________________________________________________________2
marks/ 2 markah
d) State a hypothesis for this experimentNyatakan satu hipotesis
bagi eksperimen ini
________________________________________________________________________
________________________________________________________________________
1 mark/ 1 markah
e) In Table 1.2, list two materials and apparatus labelled in
Diagram 1Dalam Jadual 1.2, senaraikan dua bahan dan radas yang
berlabel dalam Rajah 1 (3 marks)
Material / BahanApparatus / Radas
f) The following are the steps in a scientific investigation.
Arrange them in the correct sequenceBerikut adalah langkah-langkah
dalam penyiasatan saintifik. Susun mengikut urutan yang betul. P -
Making conclusion / membuat kesimpulanQ Conducting experiment /
menjalankan eksperimenR Making hypothesis / membuat hipotesisS
Identifying a problem / mengenalpasti masalahT Planning
investigation / merancang penyiasatanU Writing a report/ Menulis
laporanV Analysing and interpreting data / analisis dan huraikan
dataW Identifying and controlling variables / kenalpasti dan kawal
pembolehubahX Collecting data / Kumpul data
Answer :
________________________________________________________________1
mark/ 1 markah
2. Diagram 2 shows three types of human tissuesRajah 2
menunjukkan tiga jenis tisu manusia
Diagram 2 / Rajah 2
a) What is meant by tissue in cell organisation?Apakah yang
dimaksudkan dengan tisu dalam organisasi sel?
________________________________________________________________________________________________________________________________________________1
mark / 1 markah
b) Name the types of tissue labelled P, Q and RNamakan jenis
tisu yang berlabel P, Q dan R
P :
_____________________________________________________________________Q
:
_____________________________________________________________________R
:
_____________________________________________________________________3
marks / 3 markah
c) i. P is the most abundant human tissue. Name three types of
tissue PP ialah tisu yang paling banyak dalam manusia. Namakan tiga
jenis tisu P
1.
_________________________________________________________________2.
_________________________________________________________________3.
_________________________________________________________________3
marks / 3 markah
ii. Explain how the function of tissue P is related to its
structureTerangkan bagaimana fungsi tisu P berkait dengan
strukturnya (3
marks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
4. What is the function of the specialised tissue, Q?Apakah
fungsi tisu khusus Q?
__________________________________________________________________________________________________________________________________1mark
/ 1 markah
5. Explain the function of tissue RTerangkan fungsi tisu R
___________________________________________________________________________________________________________________________________________________________________________________________________2
marks/ 2 markah
3. Diagram 3.1 and 3.2 show two unicellular organismsRajah 3.1
dan 3.2 menunjukkan dua organisma unisel
Diagram 3.1 Diagram 3.2
a) Name the unicellular organisms shown in Diagram 3.1 and
Diagram 3.2Namakan organisma unisel yang ditunjukkan dalam Rajah
3.1 dan Rajah 3.2
Diagram 3.1/ Rajah 3.1
:____________________________________________________Diagram 3.2 /
Rajah 3.2 : ___________________________________________________2
marks / 2 markahb) Explain how the exchange of gases occurs in both
organismsTerangkan bagaimana pertukaran gas berlaku dalam kedua-dua
organisma itu
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3
marks / 3 markah
c) The habitat of the organisms is the freshwater pond. Explain
how water balance in the cell is controlledHabitat organisma ini
ialah kolam air tawar. Terangkan bagaimana keseimbangan air dalam
sel dikawal.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3
marks / 3 markah
d) Explain how feeding occurs in the organism shown in Diagram
2.2Terangkan bagaimana pemakanan berlaku pada organisma dalam Rajah
2.2
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________4
marks / 4 markah
4. Diagram 4 shows three different types of permanent tissue A,
B and C, which can be found in plantsRajah 4 menunjukkan tiga jenis
tisu kekal yang berbeza, A, B dan C yang terdapat dalam
tumbuhan
Diagram 4/ Rajah 4
a) i. What is permanent tissue?Apakah tisu kekal?
________________________________________________________________________________________________________________________________________________1
mark / 1 markah
ii. Name the three types of permanent tissue in plantsNamakan
tiga jenis tisu kekal pada tumbuhan
a.
______________________________________________________________b.
______________________________________________________________c.
______________________________________________________________3marks
/ 3 markah
b) Explain the structure of tissue B which is related to its
function in photosynthesisTerangkan struktur tisu B yang berkaitan
dengan fungsinya dalam fotosintesis
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3marks/
3 markahc) i. State the two main systems in plantsNyatakan dua
sistem utama dalam tumbuhan 1.
__________________________________________________________________2.
__________________________________________________________________2
marks/ 2markah
ii. Explain why a leaf is an organ in cell organisationTerangkan
mengapa sehelai daun adalah organ dalam organisasi sel
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3
marks/ 3 markah
5. Diagram 5 shows the structure of the plasma membraneRajah 5
menunjukkan struktur membran plasma
Diagram 5 / Rajah 5
a) On Diagram 5, label the following parts of the plasma
membraneLabelkan bahagian-bahagian membran plasma yang berikut pada
Rajah 5i. Carrier protein / Protein pembawaii. Phospholipid bilayer
/ dwilapisan fosfolipidiii. Pore protein / protein liang
b) Name the two types of proteins that are involved in the
transportation of substances through the plasma membraneNamakan dua
jenis protein yang terlibat dalam pengangkutan bahan merentas
membran plasma
1.
_________________________________________________________________2.
_________________________________________________________________2
marks / 2 markahc) State one characteristic of the phospholipid
bilayerNyatakan satu ciri dwilapisan
fosfolipid_______________________________________________________________________________________________________________________________________________1
mark / 1 markah
d) Give two factors that affect the permeability of the plasma
membraneBerikan dua faktor yang mempengaruhi ketelapan membran
plasma1.
____________________________________________________________________2.
____________________________________________________________________2
marks / 2 markah
e) Name one substance that is transported across the plasma
membrane into the cell byNamakan satu bahan yang diangkut merentas
membran plasma ke dalam sel melalui ..
i. Facilitated diffusion / resapan berbantu
_________________________________________________________________
ii. Active transport / pengangkutan
aktif_________________________________________________________________2
marks / 2 markah
6.
a) i. Name one type of disaccharidesNamakan satu jenis
disakarida
1.
_____________________________________________________________2.
_____________________________________________________________1 mark
/ 1 markah
b) Diagram 6 shows two examples of polysaccharidesRajah 6
menunjukkan dua contoh polisakarida
Diagram 6 / Rajah 6
i. Name the polysaccharidesNamakan polisakarida tersebut
P : ___________________________________________________________Q
: ___________________________________________________________2
marks / 2 markah
SECTION B / BAHAGIAN BAnswer TWO questions only. Each question
brings 20 marksJawab DUA soalan sahaja. Setiap soalan membawa 20
markah
1. a) A multicellular organism is made up of many systems. Each
system consists of several organs that cooperate to carry out a
living process. Explain how the organs in the digestive system
cooperate to carry out its functionOrganisma multisel terdiri
daripada banyak sistem. Setiap sistem terdiri daripada beberapa
organ yang bekerjasama untuk menjalankan proses hidup. Terangkan
bagaimana organ-organ dalam sistem pencernaan bekerjasama
menjalankan tugasnya. (10 marks/ 10 markah)
b) Explain why cell specialisation is important in multicellular
organismsTerangkan mengapa pengkhususan sel adalah penting bagi
organisma multisel(4 marks/ 4 markah)c) What is homeostasis and
explain why it is important to a cell to regulate its internal
environmentApakah homeostasis dan terangkan mengapa ia penting bagi
sel untuk mengawal atur persekitaran dalamannya ( 6 marks/ 6
markah)
2. Diagram 7 shows the condition of plant cells in three
solutions of different concentrations, P, Q and RRajah 7
menunjukkan keadaan sel tumbuhan di dalam tiga larutan, larutan P,
Q dan R yang berbeza kepekatannya
Diagram 7/ Rajah 7
a) Identify solutions P, Q and RKenalpasti larutan P, Q dan R (3
marks/ 3 markah)
b) Explain the condition of each cell in solutions P, Q and
RTerangkan keadaan setiap sel di dalam larutan P, Q and R(9 marks/
9 markah)
c) i. Explain what happens when the plant cell from solution P
is immersed in solution R Terangkan apa yang berlaku apabila sel
tumbuhan dalam larutan P direndamkan dalam larutan R (4 marks/ 4
markah)ii. Explain what happens when a red blood cell is immersed
into solution P and then into solution RTerangkan apa yang berlaku
apabila sel darah merah direndamkan dalam larutan P dan kemudiannya
direndam dalam larutan R(4 marks / 4 markah)
3. Diagram 8 shows the structure of a unicellular organism which
lives in a freshwater pondRajah 8 menunjukkan struktur organisma
unisel yang hidup dalam kolam air tawar
Diagram 8 / Rajah 8
a) Explain the function Y in osmoregulation Terangkan fungsi Y
dalam osmoregulasi(4 marks/ 4 markah)
b) Explain the similarities and differences between facilitated
diffusion and active transport in the movement of molecules across
the cell membraneJelaskan persamaan dan perbezaan antara resapan
berbantu dengan pengangkutan aktif dalam pergerakan molekul
merentasi membran sel.(8 marks/ 8 markah)
c) Diagram 8.1 and Diagram 8.2 shows two ways of preserving fish
and vegetable. Explain how the preservatives are effective in the
preservation of each type of the foodRajah 8.1 dan 8.2 menunjukkan
dua cara untuk mengawet ikan dan sayur. Jelaskan bagaimana pengawet
itu berkesan dalam pengawetan setiap jenis makanan dalam rajah. (8
marks / 8 markah)
Diagram 8.2Diagram 8.1
4.
a) Explain the importance of water in cellsTerangkan kepentingan
air dalam sel (8 marks / 8 markah)
b) i. Describe the structure of nucleic acid Jelaskan struktur
asid nukleik (10 marks/ 10 markah)
ii.State two importance of nucleic acids in cellsNyatakan dua
kepentingan asid nukleik di dalam sel (2 marks / 2 markah)
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