koleksi soalan bab 4

7/28/2019 Koleksi Soalan Bab 4

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KOLEKSI SOALANBIOLOGI

BAB 4: KOMPOSISI KIMIA DALAM SEL

167

Diagram below shows a protein structure.

Rajah di bawah menunjukkan satu struktur protein.

Which of the following are examples of this type of protein?Yang manakah antara berikut contoh-contoh protein jenis ini?

I ThyroxineTiroksinaII Haemoglobin

HemoglobinIII Keratin

KeratinIV Pepsin

Pepsin

A I and II only I dan II sahaja

B I and IV only I dan IV sahajaC II and III only

II dan III sahajaD III and IV only

III dan IV sahaja

16 Diagram below shows the lock and key hypothesis of enzyme reaction.


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8 Rajah di bawah menunjukkan hipotesis mangga dan kuncibagi tindakan enzim.

R

QP

What is represented by P, Q and R? Apakah yang diwakili oleh P, Q and R?

P Q R A Enzyme

EnzimSubstrateSubstrat

Product Produk

B Substrate

Substrat

Enzyme

Enzim

Product

Produk C Product Produk

Enzyme Enzim

SubstrateSubstrat

D Enzyme Enzim

Product Produk

SubstrateSubstrat

169

A housewife uses a few slices of unripe papaya to tenderize the meat she is cooking for dinner.Which of the following sequences is correct?Seorang suri rumah menggunakan beberapa keping hirisan buah betik muda untuk melembutkan daging yang dimasak untuk makan malam.

Yang manakah antara berikut urutan yang betul?


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P Add the raw papaya slicesTambahkan hirisan betik muda

Q Boil the meat Rebus daging itu

R Leave the meat for one and a half hour Biarkan daging tersebut selama satu jam setengah

S Cut the meat into small pieces Potong daging kepada hirisan kecil

A Q R S PB S P R QC P Q R SD R S Q P

170

Diagram below shows the molecular structure of two classes of food.

Rajah di bawah menunjukkan struktur molekul bagi dua jenis kelas makanan.

P Q

What are the food classes of P and Q? Apakah kelas makanan bagi molekul P dan Q?

P QA Protein

ProteinLipid

Lipid B Carbohydrate

Karbohidrat Protein

ProteinC Lipid

Lipid Carbohydrate

Karbohidrat D Protein

ProteinCarbohydrate

Karbohidrat

171

The following information refers to the function of substance K in cell.

Maklumat berikut merujuk kepada fungsi bahan K dalam sel.

Medium for biochemical reactions in cells Bahan untuk tindakbalas biokimia dalam sel


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Maintaining osmotic pressure of cells Mengekalkan tekanan osmotik dalam sel

What is substance K? Apakah bahan K?

A Lipid Lipid

B Water Air

C Protein Protein

D Enzyme Enzim

17

2

Diagram below shows a biochemical reaction in a cell.

Rajah di bawah menunjukkan tindakbalas biokimia di dalam sel.

GlycerolGl iserol

Molecules of fatty acids

P + 2 H2O

Mo leku l as id lem ak

What is substance P?

Apakah bahan P?

A Monoglyceride Monogliserid

B Diglyceride Digliserid

C TriglycerideTrigliserid

D GlycerideGliserid

173

Which type of carbohydrate can be found abundantly in liver cells?

Karbohidrat jenis manakah yang didapati dengan jumlah yang banyak dalam sel hati?

A Starch Kanji

B Maltose Maltosa

C GlucoseGlukosa

D GlycogenGlikogen

174

What is the importance of cellulose in the human diet?

Apakah kepentingan selulosa dalam pemakanan manusia?


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A It is digested to glucose which is absorbed and used to generate energy. Ia dicernakan kepada glukosa yang akan diserap dan digunakan untuk menjanatenaga.

B It is digested, absorbed and reconstituted for use as long term energy storage.

Ia dicernakan, diserap dan distruktur semula sebagai tenaga simpanan untuk kegunaan jangka masa panjang.C It is digested, absorbed and reconstituted for the formation of cell wall.

Ia dicernakan, diserap dan distruktur semula untuk membentuk dinding sel.D It absorbs water and adds bulks to the faeces to aid defecation.

Ia menyerap air dan menambahkan pelincir pada bahan tinja untuk membantu pembuangan najis.

175

Diagram below shows the protein structure in haemoglobin molecule.

Rajah di bawah menunjukkan struktur protein dalam molekul hemoglobin.

Which level of this protein structure is? Aras manakah yang diwakili oleh struktur protein ini?

A Primary structureStruktur primer

B Secondary structureStruktur sekunder

C Tertiary structureStruktur tertier

D Quaternary structureStruktur kuarterner

176

Diagram below shows the changes of protein level from quarternary structure to secondarystructure through process P.

Rajah di bawah menunjukkan perubahan peringkat protein dari kuarterner ke sekunder melalui proses P.


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178

Diagram below shows an enzyme, P and four substrates, W, X. Y and Z.

Rajah di bawah menunjukkan enzim P dan empat substrat, W, X, Y dan Z.

Substrate WSubstrat W

Substrate XSubstrat X

Substrate YSubstrat Y

Substrate ZSubstrat Z

Which substrate W, X, Y and Z can be hydrolised by enzyme P?Substrat manakah W, X, Y dan Z boleh dihidrolisiskan oleh enzim P?

A W B XC Y D Z

179

The information below shows the use of an enzyme in our daily lives.

Maklumat berikut merujuk kepada penggunaan sejenis enzim dalam kehidupan seharian.

Tenderized meat Melembutkan daging

Remove the skin of fish Menanggalkan kulit ikan

Dissolved stains in clothes Melarutkan kotoran pada pakaian

Based on the information above, which of the following is the enzyme? Berdasarkan pernyataan di atas, manakah menunjukkan enzim tersebut?

A Lipase Lipase

B Protease Protease

C Amylase


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AmilaseD Cellulase

Selulase

18

0

Which of the following monosaccharides combination produces sucrose?

Yang manakah antara kombinasi monosakarida berikut menghasilkan sukrosa?

A Glucose + fructoseGlukosa + fruktosa

B Glucose + galactoseGlukosa + galaktosa

C Fructose + galactose Fruktosa + galaktosa

D Glucose + glucoseGlukosa + glukosa

181

What is the process that breaks down dipeptide into amino acid?

Apakah proses yang berlaku untuk memecahkan dipeptida kepada asid amino?

A Condensation Kondensasi

B Heating Pemanasan

C Acid addition Penambahan asid

D Hydrolysis Hidrolisis

182

Which of the following graph shows the effect of pH on the metabolic rate of the enzyme pepsin?Yang manakah antara graf berikut menunjukkan kesan pH ke atas kadar metabolismaenzim pepsin?

A

Rate of reaction Kadar tindak balas

0 7 14 pH


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Namakan bahan X.

A Starch Kanji

B Protein

ProteinC Amylase Amilase

D Pepsin Pepsin

184

Diagram below shows two different types of protein molecules.

Rajah di bawah menunujukkan dua jenis molekul protein.

Alpha helix Heliks alpha

Beta pleated Lipatan beta

Which protein structure does these two types of molecules belong to? Apakah stuktur protein yang ditunjukkan oleh kedua-dua molekul protein itu?

A Primary structureStruktur primer

B Secondary structureStruktur sekunder

C Tertiary structureStruktur tertier

D Quarternary structureStruktur kuartener

185

Diagram below shows the molecule of an enzyme.

Rajah di bawah menunjukkan satu molekul enzim.


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Which of the following is the substrate for this enzyme? Manakah berikut adalah substrat untuk enzim tersebut?

A B

C D

186

Enzymes are added to biological washing powders to remove stains. Which would be themost effective enzymes in removing chocolate milk?

Beberapa enzim telah dimasukkan ke dalam serbuk pencuci biologi untuk menanggalkankekotoran. Manakah enzim yang paling berkesan untuk menanggalkan kekotoran susucoklat?

A Amylase and maltase Amilase dan maltase

B Amylase and catalase Amilase dan katalase

C Protease and lipase Protease dan lipase

D Protease and catalase Protease dan katalase

187

Diagram below shows the breakdown of three types of organic molecules.

Rajah di bawah menunjukkan penguraian tiga jenis molekul organik.

X Y Y

What are X, Y and Z? Apakah X, Y dan Z?


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X Y ZA Carbohydrate

Karbohidrat Fat

Lemak Protein

ProteinB Carbohydrate

Karbohidrat Protein

ProteinFat

Lemak

C Protein Protein Carbohydrate Karbohidrat Fat Lemak D Protein

ProteinFat

Lemak Carbohydrate

Karbohidrat

188

What is the main carbohydrate reserve in liver cells?

Apakah jenis karbohidrat utama yang disimpan dalam sel hati?

A GlucoseGlukosa

B GlycogenGlikogenC Lactose

LaktosaD Starch

Kanji

189

Which of the following is formed from condensation of 3 molecules of fatty acids and 1molecule of glycerol?Yang manakah antara berikut terbentuk daripada kondensasi 3 molekul asid lemak dan 1molekul gliserol?

A GlycogenGlikogen

B Lipid Lipid

C Starch Kanji

D UreaUrea

19

0

Statements below show the hydrolysis of 4 different types of carbohydrates.

Pernyataan dibawah menunjukkan hidrolisis 4 jenis karbohidrat yang berbeza.


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Rajah di bawah menunjukkan struktur substrat dan enzim.

A B CD

SubstrateSubstrat

Enzyme Enzim

Which of the labeled parts A, B, C and D is the active site? Antara A, B, C dan D, yang manakah tapak aktif?

193

What is the level of protein structure for haemoglobin?

Apakah peringkat struktur protein bagi hemoglobin?

A Primary structure of protein

Struktur primer proteinB Secondary structure of protein

Struktur sekunder proteinC Tertiary structure of protein

Struktur tertier proteinD Quarternary structure of protein

Struktur kuartener protein

194

Diagram below shows the process of formation of a triglyceride molecule.

Rajah di bawah menunjukkan proses pembentukan molekul trigliserida.

+ +

X3 H 2O

What is process X? Apakah proses X?

A Hydrolysis Hidrolisis

B Dialysis Dialisis

C Condensation Kondensasi

D Assimilation Asimilasi

195

Diagram below shows the mechanism of an enzymatic reaction.

Rajah di bawah menunjukkan mekanisma tindakbalas enzim.


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P Q

R

What are P, Q and R? Apakah P, Q dan R?

P Q R A Enzyme

EnzimSubstrateSubstrat

Products Produk

B SubstrateSubstrat

Enzyme Enzim

Products Produk

C Products Produk

Enzyme Enzim

SubstrateSubstrat

D SubstrateSubstrat

Products Produk

Enzyme Enzim

196

Diagram below shows a shirt with a blood stain before and after being washed withdetergent containing enzyme.

Rajah di bawah menunjukkan baju dengan kesan darah sebelum dan selepas dibasuhdengan pencuci mengandungi enzim.

Blood stain Kesan da rah

BeforeSebelum

After Setelah

Which are the most suitable enzyme and temperature to give the result shown?Yang manakah enzim dan suhu yang paling sesuai untuk menghasilkan keputusan seperti

di atas?

Enzyme Enzim

Temperature Suhu

A Lipase Lipase 37C

B Protease Protease 18C


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C Lipase Lipase 18C

D Protease Protease 37C

197 Haemoglobin is an example of a

Hemoglobin adalah contoh

A primary structure of protein struktur protein primer

B secondary structure of protein struktur protein sekunder

C tertiary structure of protein struktur protein tertier

D quarternary structure of protein

struktur protein kuartener

198

Diagram below shows a molecule of an enzyme.

Rajah di bawah menunjukkan molekul enzim.

Which are the suitable substrates for this enzyme?Yang manakah substrat yang sesuai untuk enzim ini?

I II

III IV

A I and II I dan II

B II and III II dan III

C I and III I dan III

D II and IV II dan IV

19 Diagram below shows the biochemical processes which involves molecule K, molecule M


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9 and enzyme L which takes place in organ X. Rajah di bawah menunjukkan proses biokimia yang melibatkan molekul K, molekul M danenzim L yang berlaku di dalam organ X.

K M

GlycogenGlikogen

Liver Hati

Hepatic portal veinVena portal hepar

Organ X

Muscle cellsSel otot

Enzyme L Enzim L

+ + + ......

Name molecule K, molecule M, enzyme L and organ X. Namakan molekul K, molekul M, enzim L dan organ X.

Molecule K Molekul K

Molecule M Molekul M

Enzyme L Enzim L

Organ X

A SucroseSukrosa

GlucoseGlukosa

SucraseSukrase

Duodenum Dudenum

B GlucoseGlukosa

Maltose Maltosa

Maltase Maltase

Ileum Ileum

C Maltose Maltosa

GlucoseGlukosa

Maltase Maltase

Ileum Ileum

D Lactose

Laktosa

Galactose

Galaktosa

Lactase

Laktase

Duodenum

Duodenum

200

Diagram shows the structure of DNA.

Rajah menunjukkan struktur DNA.

P

Q R

What are P, Q and R? Apakah P, Q dan R?

P Q R A Nucleotide

NukleotidaPhosphate group

Kumpulan fosfat Deoxyribose sugar Gula deoksiribosa


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B Phosphate group Kumpulan fosfat

Deoxyribose sugar Gula deoksiribosa

Nitrogenous base Bes bernitrogen

C Phosphate group Kumpulan fosfat

Nucleotide Nukleotida


D Nitrogenous base Bes bernitrogen

Phosphate group Kumpulan fosfat


201

Diagram shows the reaction of an enzyme based on lock and key hyphothesis.

Rajah menunjukkan tindakbalas enzim berdasarkan hipotesis mangga dan kunci.

Based on diagram, determine the properties of an enzyme. Berdasarkan rajah, kenalpasti sifat-sifat enzim.

A Enzyme action is not specific.Tindakan enzim tidak spesifik.

B Enzyme remains unchanged at the end of the reaction. Enzim kekal tidak berubah di akhir tindakbalas.

C Enzyme reactions are reversible.Tindakan enzim adalah berbalik.

D Enzymes speed up the rates of chemical reaction. Enzim mempercepatkan kadar tindakbalas kimia.

202

Which of these carbohydrates is insoluble in water?

Karbohidrat yang manakah tidak larut dalam air?

A Starch Kanji

B Maltose Maltosa

C GlucoseGlukosa

D GalactoseGalaktosa

203

Which of the following elements is required by plants for manufacturing amino acids?

Manakah antara elemen berikut yang diperlukan oleh tumbuhan bagi membina asid amino?

A Nitrogen Nitrogen

B Magnesium Magnesium

C Phosphorus Fosforus

D Manganese Manganese


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204

Diagram below shows the basic DNA structure.

Rajah di bawah menunjukkan struktur asas DNA.

P

R

S

What are P, R and S? Apakah P, R dan S?

P R SA Nucleotide

Nukleotida

Phosphate

Fosfat

Deoxyribose sugar

Gula deoksiribosaB Phosphate Fosfat

Deoxyribose sugar Gula deoksiribosa


C Phosphate Fosfat



D Nitrogenous base Bes bernitrogen

Phosphate Fosfat


205

Which of the following represents the hydrolysis of polypeptides?

Antara yang berikut, yang manakah mewakili hidrolisis polipeptida?

A Polypeptides water + dipeptides Polipeptida air + dipeptidaB Dipeptides water + polypeptides

Dipeptida water + polypeptidaC Dipeptides + water polypeptides

Dipeptida + water polypeptidaD Polypeptides + water dipeptides

Polipeptida + air dipeptida

206

Which of the following are extracellular enzymes?

Antara berikut, yang manakah merupakan enzim luar sel?I Amylase

AmilaseII Pepsin

PepsinIII Trypsin

Tripsin


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A I and II I dan II

C II and III II dan III

B I and III I dan III

D I, II and III I, II dan III

207

Diagram below shows the action of an enzyme on a substrate molecule.

Rajah di bawah menunjukkan tindakan satu enzim ke atas satu molekul substrat.

P

R

S

Q

What is S if P is lactase, Q is lactose and R is glucose? Apakah S jika P ialah laktase, Q ialah laktosa dan R ialah glukosa?

A Maltose Maltosa

B GlucoseGlukosa

C Fructose Fruktosa


208

Which combination of two monosaccharides below will produce sucrose?

Antara gabungan dua unit monosakarida berikut, yang manakah menghasilkan sukrosa?

A Glucose + lactoseGlukosa + laktosa

B Glucose + fructoseGlukosa + fruktosa

C Glucose + glucoseGlukosa + glukosa

D Fructose + lactose Fruktosa + laktosa

209

Diagram below shows a type of molecular structure of protein.

Rajah di bawah menunjukkan sejenis struktur molekul protein.


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What is the type of the structure? Apakah jenis struktur itu?

A Primary Primer

B SecondarySekunder

C Tertiary

Tertier D Quarternary Kuarternari

210

Diagram below illustrates the mechanism of the action of an enzyme on a substrate.

Rajah di bawah menunjukkan cara enzim bertindak ke atas substrat.

Which of the following statement is true ? Antara pernyataan berikut, yang manakah benar ?

A Enzymes reaction is specific.Tindakan enzim adalah spesifik.

B Enzymes are denatured at temperature 100C. Enzim ternyahasil pada suhu 100C.

C The activity of enzyme is affected by pH.Tindak balas enzim dipengaruhi oleh pH.

D Enzymes change shape at the end of the reaction. Enzim berubah bentuk pada akhir tindak balas.

211

Diagram below is a graph showing the effects of temperature on the rate of enzymereaction.

Rajah di bawah ialah graf yang menunjukkan kesan suhu ke atas kadar tindakbalas enzim.


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Rate of enzyme reaction Kadar t indakbalas enzim

Temperature ( C)Suhu ( C)

10 20 30 40 50 60

A

B

CD

If the temperature is increased further, which curve A, B, C or D will be the shape of thecurve after 30C?

Jika suhu terus ditingkatkan, manakah lengkung yang paling sesuai, A, B, C atau D, untuk

mewakili lengkung bagi suhu melebihi 30C?

212

Diagram below shows a structure of plasma membrane.

Rajah di bawah menunjukkan struktur membran plasma.

P

What is P? Apakah P?

A Cholesterol Kolestrol

B Phospholipid Fosfolipid

C Carbohydrate Karbohidrat

D Carrier protein

Protein pembawa

213

The figure below show the breaking down of a complex molecule by an enzyme.

Which of the molecules A, B, C or D represents the substrate? Rajah menunjukkan proses penguraian molekul kompleks oleh enzim. Antara molekul A,B,C dan D, yang manakah mewakili substrat?


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A B C D

214

Diagram below shows an experiment to study the activity of enzyme.

The test tube are kept at 37C for an hour Rajah di bawah menunjukkan satu eksperimen untuk mengkaji tentang aktiviti enzim.Semua tabung uji tersebut dibiarkan pada suhu 37C selama 1 jam.

10ml of pepsin + 1mlof hydrochloric acid+ solid egg white10ml pepsin + 1ml asid hidroklori k + putih telur

P

10ml of boiled peps in+ 1ml of hyd rochlo ricacid + soli d egg white10ml pepsin yang dididihk + 1ml asid hid roklorik + putih telur

R

10 ml o f water + 1ml

of hydrochloric acid+ solid egg white10ml air + 1ml asid hidroklori k + putih telur

Q

10 ml of pepsin + 1 ml

of sodium hydroxidesolution + solid egg white10ml pepsin + 1ml larutannatrium hid roksida+ putih telur

S

Which of the following is not true about this experiment? Antara berikut manakah tidak benar berkaitan eksperimen tersebut?

A Pepsin can digest solid egg white. Pepsin boleh mencernakan pepejal telur putih.

B Pepsin is active in an acidic medium. Pepsin aktif dalam medium berasid.

C Pepsin is active in an alkaline medium. Pepsin aktif dalam medium berasid.

D Pepsin is most active at 37C. Pepsin bertindak paling aktif pada suhu 37C.

215

Which of the following is not true about enzymes?

Antara berikut yang manakah tidak benar tentang enzim?


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A Enzymes are highly specific. Enzim adalah sangat spesifik.

B Enzymes cannot be destroyed. Enzim tidak dapat dimusnahkan.

C Enzymes are needed in big quantities. Enzim diperlukan dalam kuantiti yang banyak.D Enzymes are synthesised in the ribosomes.

Enzim disintesis di dalam ribosom.

216

The graph below shows the optimum pH of enzyme M and N in its reaction.

Graf di bawah menunjukkan pH optimum bagi enzim M dan N di dalam tindakbalasnya.

1 2 3 4 5 6 7 8 9 10 pH

Rate of reaction Kadar tindakbalas

NM

What is enzyme M and N? Apakah enzim M dan N?

M N

A Pepsin Pepsin TrypsinTripsinB Amylase

AmilaseTrypsinTripsin

C Pepsin Pepsin

Amylase Amilase

D TrypsinTripsin

Amylase Amilase

217

Diagram below shows three structure of protein.

Rajah di bawah menunjukkan tiga struktur protein.


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R Q

P

What are structure P, Q and R? Apakah struktur P,Q dan R?

P Q R

A Primary Primer SecondarySekunder Quaternary Kuartener

B Quaternary Kuartener Primary

Primer SecondarySekunder

C Quaternary Kuartener SecondarySekunder

Primary Primer

D SecondarySekunder Primary

Primer Quaternary

Kuartener

218 Amino acid +Amino acid X

Y

Asid amino + Asid aminodipeptide + water dipeptida + air

What is process X and Y? Apakah X dan Y?

X Y

AHydrolysis

HidrolisisCondensation

Kondensasi

BCondensation

KondensasiHydrolysis

Hidrolisis

CHydrolysis

Hidrolisis

Hydrolysis

HidrolisisD

Condensation Kondensasi

Condensation Kondensasi

219

Diagram below shows a hydrolysis process by an enzyme.

Rajah di bawah menunjukkan proses hidrolisis oleh enzim.


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A B C D

Which of a structure labeled A, B, C and D represent the enzyme? Antara struktur berlabel A,B, C dan D, manakah mewakili enzim?

220

During vigorous exercise, what are the end products of anaerobic respiration inhumanmuscle tissues?Semasa senaman cergas, apakah hasilan akhir pernafasan anaerobik dalam tisu otot manusia?

A Carbon dioxide and water Karbon dioksida dan air

B Ethanol and carbon dioxide

Etanol dan karbon dioksidaC Lactic acid and energy Asid laktik dan tenaga

D Lactic acid and carbon dioxide Asid laktik dan karbon dioksida

221

What are the contents of carbohydrates?

Apakah kandungan karbohidrat?

A Carbon, hydrogen, oxygen and nitrogen Karbon, hidrogen, oksigen dan nitrogen

B Carbon, hydrogen and oxygen Karbon, hidrogen dan oksigen

C Carbon and hydrogen Karbon dan hidrogen

D Carbon and oxygen Karbon dan oksigen

222

The equation below shows the formation of disaccharides through the process X.

Persamaan di bawah menunjukkan pembentukan disakarida melalui proses X.

C H O + C H O6 12 6 6 12 6 C H 0 + H O12 22 11 2X

What is the name of process X? Apakah nama bagi proses X?

A Hydrolysis and condensation


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Hidrolisis dan kondensasiB Condensation

KondensasiC Hydrolysis

Hidrolisis

D Photolysis Fotolisis

223

The following shows the formation of a sucrose molecule.

Yang berikut menunjukkan pembentukan molekul sukrosa.

GlucoseGlukosa

Molecule R + + Moleku l RSucroseSukrosa

Water Ai r

What is molecule R?

Apakah molekul R?

A GlucoseGlukosa

B Lactose Laktosa

C Fruktose Fruktosa


224

Which of the following are true about saturated fats?

Yang manakah antara berikut benar tentang lemak tepu?

I Low content of cholesterol Kandungan kolesterol rendahII Solid form at room temperature

Berbentuk pepejal pada suhu bilik III Maximum content of hydrogen atoms

Kandungan atom hidrogen maksimumIV At least one double bond between the carbon atoms

Sekurang-kurangnya satu ikatan ganda-dua di antara atom-atom karbon

A I and IV only I dan IV sahaja

B I, II and III only I, II dan III sahaja

C II and III only II dan III sahaja D II, III and IV only II, III dan IV sahaja

225

Diagram below shows the action of an enzyme.

Rajah di bawah menunjukkan tindakan suatu enzim.


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+

Enzyme Enzim

Enzyme Enzim

Products Hasil

SubtrateSubstrat

What is shown by the diagram? Apakah yang ditunjukkan melalui rajah ini?

A Enzyme is a protein. Enzim ialah satu protein.

B Enzyme and substrate are specific. Enzim dan substrat adalah spesifik.

C Enzyme is denatured by temperature. Enzim ternyahasli oleh suhu.

D Enzyme speeds up the biochemical reaction. Enzim mempercepatkan tindak balas biokimia.

226

Diagram below shows the action of an enzyme sucrase on sucrose.

Rajah di bawah menunjukkan tindakan enzim sukrase ke atas sukrosa.

P

Q

R S

What is P, Q, R and S? Apakah P, Q, R dan S?

P Q R SA Sucrose

SukrosaSucraseSukrase

GlucoseGlukosa

Fructose Fruktosa

B SucraseSukrase

SucroseSukrosa

GlucoseGlukosa

Fructose Fruktosa

C SucroseSukrosa

SucraseSukrase

GalactoseGalaktosa

GlucoseGlukosa

D SucraseSukrase

SucroseSukrosa

GalactoseGalaktosa

Fructose Fruktosa

227

Diagram (a) shows a set-up of apparatus to study the action of pepsin on protein. Diagram(b) shows the result of the experiment after one hour.

Rajah (a) menunjukkan satu set radas untuk mengkaji tindakan pepsin ke atas protein. Rajah (b) menunjukkan keputusan eksperimen tersebut selepas satu jam.


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Thermometer Janhgkasuhu

Cloudy Keruh

Test tubeTabung ujiWater bath at 37 C

2 ml albumensolution + 1 ml 1%

pepsin solution + 2drops dilutehydrochloric acid

Kukusan air pada suhu 37 C

2 ml larutanalbumen + 1 ml 1%larutan pepsin + 2titis asid hid roklorik cair

Diagram (a) Rajah (a)

Clear Je rnih

Diagram (b) Rajah (b)

The experiment in diagram (a) is repeated using 4 ml of 1% boiled pepsin. Which of thefollowing is the result of the experiment after one hour?

Eksperimen dalam rajah (a) diulang dengan menggunakan 4 ml 1% pepsin yang dididihkan. Antara yang berikut, yang manakah merupakan keputusan eksperimentersebut?

A B


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C D

228

Which of the following carbohydrates is disaccharide?

Yang manakah antara karbohidrat berikut merupakan disakarida?

A Fructose Fruktosa

B Lactose Lactosa

C Starch Kanji


229

Diagram below shows the hydrolysis process of a fat molecule.

Rajah di bawah menunjukkan proses hidrolisis satu molekul lemak.

Enzyme W

X Y

+ Enzim W

What are W, X and Y? Apakah W, X dan Y?

Enzyme W Enzim W

Enzyme X Enzim X

Enzyme Y Enzim Y

A P and S P dan S

R and Q R dan Q

R and Q R dan Q

B P and R P dan R

Q and SQ dan S

Q and SQ dan S

C R and Q R dan Q

P and S P dan S

P and S P dan S

D Q and SQ dan S

P and R P dan R

P and R P dan R

230

Diagram below shows a mechanism of enzyme reaction.

Rajah di bawah menunjukkan satu mekanisme tindak balas enzim.


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+ +

Enzyme Enzim

Product Hasil

Enzyme-substratecomplex

Komplek enzim subst rat

SubstrateSubstrat

Which statement can be deduced from the diagram? Pernyataan yang manakah boleh disimpulkan dari rajah itu?

A Enzyme action is specific.Tindakan enzim adalah spesifik.

B Enzyme is denatured at 50C.

Enzim dinyahasil pada suhu 50C.C Enzyme is destroyed at the end of the reaction. Enzim dimusnahkan pada akhir tindak balas.

D Enzyme reaction can be inhibited by heavy metals.Tindak balas enzim boleh direncat oleh logam berat.

231

Diagram shows the lock and key hypothesis of enzyme reaction.

Rajah menunjukkan hipotesis kunci dan mangga bagi tindak enzim.

WX Y Z

Which of the following is represented by X, Y and Z if W is lactose? Antara berikut yang manakah diwakili oleh X, Ydan Z jika W ialah laktosa?

X Y ZA Maltase

MaltaseGlucoseGlukosa

GlucoseGlukosa

B Lactose Laktosa

GlucoseGlukosa

GalactoseGalaktosa

C Lactase Laktase

GalactoseGalaktosa

GlucoseGlukosa

D SucraseSukrase

Fructose Fruktosa

GlucoseGlukosa

232

Diagram shows a type of molecular structure of carbohydrate.

Rajah menunjukkan satu jenis struktur molekul karbohidrat.


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What is the name of the carbohydrate? Apakah nama karbohidrat tersebut?

A GlucoseGlukosa

B GlycogenGlikogen

C Starch Kanji

D CelluloseSelulosa

233

Diagram shows one type of protein structure. Which of the following is an example of thestructure?

Rajah menunjukkan satu jenis struktur protein. Yang manakah antara berikut adalahcontoh untuk struktur itu?

A Keratin Keratin

B Silk Sutera

C Enzyme Enzim

D Haemoglobin Hemoglobin

234

What are the contents of carbohydrates?

Apakah kandungan karbohidrat?

A Carbon, hydrogen, oxygen and nitrogen. Karbon, hydrogen, oksigen dan nitrogen.

B Carbon, hydrogen and oxygen. Karbon, hydrogen dan oksigen.

C Carbon and hydrogen.


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Karbon dan hydrogen.D Carbon and oxygen.

Karbon dan oksigen.

23

5

Which of the following is not lipid?

Yang manakah di bawah bukan lipid?

A Waxes Lilin

B Antibodies Antibodi

C Phospholipids Fosfolipid

D SteroidsSteroid

236

The plotted graph shows the hydrolysis of starch by amylase in different temperature.Which of the following curve is the optimum temperature?Graf di atas diplotkan untuk menunjukkan proses hidrolisis kanji oleh amilase pada suhu

yang berbeza. Di antara lengkung graf yang diplotkan, lengkung yang manakahmerupakan bersuhu optimum?

Quantity of starch /mgcm -3

Time / minute

A10

5

0 1 2 3 4 5 6 7 8

B

CD

Quantity of kanji /mgsm -3

Masa / minit

237

Diagram shows experiment to study photosynthesis.What is function of sodium hydrogen carbonate solution used in this experiment?

Rajah menunjukkan eksperimen untuk mengkaji fotosintesis. Apakah fungsi larutan natrium hidrogen karbonat di dalam eksperimen ini?


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Cut end of plant facing upwardsTumbuhan yang dipotong hujung menghadap ke atas

0.02% sodium hydrogencarbonate solution0.02% larutan natriumhidrogen karbon ate

A Reducing agent Agen penuruan

B Provide carbon dioxide Membekalkan karbon dioksida

C Oxidation agent Agen oksidasi

D Hydrolysis agent Agen hidrolisis

238

Which of the following is not true about enzymes?

Antara berikut yang manakah tidak benar tentang enzim?

A Enzymes are highly specific. Enzim adalah sangat specifik.

B Enzymes cannot be destroyed. Enzim tidak dapat dimusnahkan.

C Enzymes are needed in big quantities. Enzim diperlukan dalam kuantiti yang banyak.

D Enzymes are synthesized in the ribosomes. Enzim disintesis di dalam ribosom.

239

Which of the following graph best represents the effect of pH on the rate of reaction of enzymes secreted by the pancreas?

Antara graf berikut, yang manakah paling sesuai untuk menunjukkan kesan pH keatas kadar tindak balas enzim yang dirembeskan oleh pankreas?

A

Rate of reaction Kadar tindak balas

0 7 14 pH


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tersebut?

A40 CO

Detergent with Amylase Pencuci dengan amilase

B20 CO

Detergent with amylase Pencuci dengan amilase

C30 CO

Detergent with protease Pencuci dengan protease

D40 CO

Detergent with lipase Pencuci dengan lipase

241

Diagram below shows an organic compound.

Rajah di bawah menunjukkan sejenis sebatian organik.

Which of the following enzyme can hydrolyse the organic compound? Antara enzim berikut, yang manakah boleh menghidrolisis sebatian organik tersebut ?

A Lipase Lipase

B Zimase Zimase

C Protease Protease

D SucraseSukrase

242

Diagram shows the effects of temperature on the rate of an enzyme reaction.

Rajah menunjukkan kesan suhu ke atas kadar tindak balas enzim.


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Rate of enzyme Kadar tindak balas enzim

TemperatureSuhu

0 C 37 C 60 C

Which of the following statement is correct?Yang manakah pernyataan di bawah betul?

A When the temperature is low, the rate enzyme reaction is high. Apabila suhu rendah, kadar tindak balas enzim tinggi.

B When the temperature is high, the rate of reaction is not accelerated. Apabila suhu tinggi, kadar tindak balas enzim tidak bertambah.

C When the temperature is optimum, the rate of enzyme reaction is maximum. Apabila suhu optimum, kadar tindak balas enzim maksimum.

D When the temperature is beyond the optimum, the rate of enzyme reaction is increase. Apabila suhu meningkat sehingga optimum, kadar tindak balas enzim akanbertambah.

243

Diagram shows the relationship between the rate of enzyme reaction and substrateconcentration.

Rajah menunjukkan perkaitan antara kadar tindak balas enzim dan kepekatan substrat.

Rate of enzyme reaction Kadar tindak balas enzim

Substrate concentration

1.0

0.5

Kepekatan substrat


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Which of the following statement is true? Pernyataan manakah yang benar?

A The rate of enzyme reaction is directly proportional to substrate concentration. Kadar tindak balas enzim berkadar terus dengan kepekatan substrat.

B When the concentration of substrate increase, the rate of enzyme reaction increase untilit reach at certain concentration. Apabila kepekatan substrat bertambah, kadar tindak balas enzim bertambah hinggamencapai kepekatan tertentu.

C When the concentration of substrate increase, the rate of enzyme reaction decreaseuntil it reach at certain concentration.

Apabila kepekatan substrat bertambah, kadar tindak balas enzim berkurang hinggamencapai kepekatan tertentu.

D When the concentration of substrate decrease, the rate of enzyme reaction increaseuntil it reach at certain concentration.

Apabila kepekatan substrat berkurang, kadar tindak balas enzim bertambah hingga

mencapai kepekatan tertentu.244

Diagram shows structure protein A and structure protein B.

Rajah menunjukkan struktur protein A dan struktur protein B.

A B

State the factors that affect the changes of structure protein A to structure protein B. Nyatakan faktor yang menyebabkan perubahan struktur protein A kepada struktur protein B.

I pH pH

II TemperatureSuhu

III Salt concentration Kepekatan garam

IV Humidity Kelembapan

A I only I sahaja

B II only II sahaja

C I and II only D I, II, III and IV


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I dan II sahaja I, II, III dan IV

245

Diagram below shows the organelles in an animal cell.

Rajah di bawah menunjukkan organel-organel di dalam satu sel haiwan.

P SR Q

Which of the organelles P, Q, R and S are involved in the synthesis and secretion of extracellular enzymes?Yang manakah antara organel P, Q, R and S terlibat dalam sintesis dan perembesan enzimluar sel?

A P, Q and R P, Q dan R

B P, Q and S P, Q dan S

C Q, R and SQ, R dan S

D P, R and S P, R dan S

koleksi soalan bab 4

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