P

Q

R

1 Diagram 1 shows the structure of an animal cell.

Diagram 1What are P, Q and R?

P Q RA Golgi apparatus Mitochondrion Smooth endoplasmic

reticulumB Smooth endoplasmic

reticulumGolgi apparatus Mitochondrion

C Smooth endoplasmic reticulum

Mitochondrion Golgi apparatus

D Golgi apparatus Smooth endoplasmic reticulum

Mitochondrion

[KNOWLEDGE/B2/E]

2 Diagram 2 shows an animal muscle tissue.

Diagram 2Which of the following is the function of the tissue when it contract?A Moves the bonesB Pumps blood to all parts of the bodyC Detects stimulus and transmits impulseD Peristaltic movement along the digestive tract

[KNOWLEDGE/B2/M]

3 Which organ consists of cells which have the high density of rough endoplasmic reticulum?A Stomach C BrainB Kidney D Heart

[APPLICATION/B2/H]

2

Y Z

4 Diagram 3 shows the cell organisation in a multicellular organism.

Cell Tissue Organ System Organism

Diagram 3A leaf is an example of A system C tissueB organ D cell

[KNOWLEDGE/B2/E]

5 Diagram 4 shows an organelle of a cell.

Diagram 4Which of the following occurs in this organelle?A PhotosynthesisB Synthesis of proteinC Synthesis of enzymeD Generation of energy

[KNOWLEDGE/B2/E]

6 Diagram 5 shows a process carried out by an Amoeba sp.

Diagram 5What is the process?A Osmoregulation C PhagocytosisB Binary fission D Diffusion

[KNOWLEDGE/B2/E]

7 Diagram 6 shows the structure of a plasma membrane.

Diagram 6What are Y and Z?

Y ZA Pore protein PhospholipidB Carrier protein PhospholipidC Carrier protein GlycolipidD Pore protein Glycolipid

[KNOWLEDGE/B3/E]

3

Start of experiment After 3 hours

Visking tubingST

8 Diagram 7 shows the diffusion of water molecules through a Visking tubing.

Diagram 7 After one hour, the Visking tubing becomes turgid. What are S and T?

[COMPREHENSION/B3/M]

9 Diagram 8 shows a plant cell which has been put into a particular solution.

Diagram 8Which is experienced by the cell?A Crenation C PlasmolysisB Haemolysis D Deplasmolysis

[KNOWLEDGE/B3/E]

10 Concentrated sugar solution can be used to preserve certain food from microorganisms. What is the principle behind this? A Concentrated sugar solution is isotonic to the cell sap of the microorganism B The water will move from surroundings into the microorganisms C Concentrated sugar solution is hypotonic to the microorganism D Concentrated sugar solution is hypertonic to the microorganism

[APPLICATION/B3/T]

4

S T

A 30% sucrose solution 30% sucrose solution

B 30% sucrose solution 5% sucrose solution

C 5% sucrose solution 5% sucrose solution

D 5% sucrose solution 30% sucrose solution

Carrot

Concentrated sucrose solution

Cavity

Distilled water

11 Diagram 9 shows four strips of spinach, I, II, III and IV, which were immersed into different concentrations of salt solution for 2 hours.

I II III IVDiagram 9

Which of the following are true of the solute conditions for the four strips?I hypertonic III hypotonic II hypotonic IV isotonic

A I and II C I, II and IV B II, III and IV D II and IV

[COMPREHENSION/B3/S]

12 Diagram 10 show a carrot immersed in concentrated sucrose solution.

Diagram 10

After an hour it would be found that A the carrot has shrunkB the liquid level in the cavity has risenC the liquid level in the cavity has droppedD sucrose has entered into the distilled water

[COMPREHENSION/B3/S]

13 Diagram 11 shows the primary structure of a protein.

Diagram 11Q represents ................A Amino acid C Hydrogen bondB Peptide bond D Polypeptide chain

[KNOWLEDGE/B4/E]

5

Epidermis Epidermis

Q

X Y Z

P Q

R

S

14 Diagram12 shows the molecular structure of three food classes.

Diagram 12

Which food classes do X, Y and Z belong to?X Y Z

A Carbohydrate Protein Lipid B Protein Lipid CarbohydrateC Protein Carbohydrate LipidD Lipid Carbohydrate Protein

[KNOWLEDGE/B4/E]

15 The following information refers to a molecule X.

What is molecule X? A Sucrose C Lactose B Maltose D Starch

[KNOWLEDGE/B4/E]

16 Diagram 13 shows the action of an enzyme on a substrate molecule.

Diagram 13What is S if P is lactase, Q is lactose and R is glucose?A Maltose C FructoseB Glucose D Galactose

[COMPREHENSION/B4/E]

6

Sweet taste Can be crystallized Soluble in water Hydrolysis of molecule X produce glucose and fructose

Saliva + starch solution + iodine Water bath 37oC

17 Diagram 14 shows structure P in a cell which is involved in producing extracellular enzymes.

Diagram 14What will happen if structure P fails to fuse with the Golgi apparatus?A Protein are not synthesizedB Protein are not modifiedC Protein are denaturedD Protein are hydrolysed

[COMPREHENSION/B4/H]

18 Diagram 15 shows the set-up of an experiment to study the effect of temperature on the rate of an enzyme-catalysed reaction.

Diagram 15Which of the following observations is obtained after 10 minutes?A A dark blue colour is seen.B A purple colour is seenC The yellow colour disappearsD The dark blue colour disappears rapidly

[COMPREHENSION/B4/H]

19 The following information is about some processes

Which of the following is related to mitotic process?A P and Q C P, Q and RB P, Q and S D P, Q, R and S

[KNOWLEDGE/B5/E]

7

P- Organism growthQ- Damaged cell replacementR- Variation in spesiesS- Cell regeneration

P

R

Q

P

20 Diagram 16 shows two chromosomes.

Diagram 16What are P,Q and R?

P Q RA Centromere Chromatid Non-sister chromatidsB Chromosomes Chromatid Sister chromatidsC Chromatid Chromatid Non-sister chromatidsD Centromere Non-sister chromatids Chromatin

[KNOWLEDGE/B5/E]

21 Diagram 17 shows a phase during meiosis.

Diagram 17

What is the stage shown by Diagram 17?A Metaphase I C Anaphase IB Metaphase II D Anafasa II

[KNOWLEDGE/B5/E]

22 Which of the following is the correct comparison between Meiosis I and Meiosis II?Meiosis I Aspects Meiosis II

A Synapsis does not occur Prophase Synapsis occurB Chromosome line up at metaphase

plateMetaphase Homologous chromosome line up at

metaphase plateC Homologous chromosomes separate

and move to opposite polesAnaphase Centromeres separate and chromatids are

pulled to opposite polesD Two daughter cells are produced Telophase Two daughter cells are produced

8

[COMPREHENSION/B5/E]

23 Diagram 18 shows a plant cell undergoing mitosis.

Diagram 18

What is the stage of mitosis shown and how many chromosomes will there be in the daughter cells? Stage of mitosis Number of chromosomes

A Metaphase 4B Anaphase 4C Metaphase 8D Anaphase 8

[COMPREHENSION/B5/M]

24 If cells undergo mitosis repeatedly without undergoing cytokinesis, what will the result be?A The cells will not be able to duplicate DNA B The number of chromosome will decreaseC The cells will contain many nucleiD The cells will lack nuclei

[APPLICATION/B5/H]

25 The diploid number of chromosomes in an animal cell is 24. During anaphase I, a pair of the homologous chromosomes failed to separate.What is the number of chromosomes in each daughter cell after Meiosis I is completed?

Daughter cell 1 Daughter cell 2A 12 12B 11 13C 24 0D 23 24

[APPLICATION/B5/H]

26

The statements describe a patient who suffers fromA gastritis C obesityB bulimia D anorexia nervosa

9

Caused by bad eating habits such as eating late and not at a specific time. Symptoms are sharp pains in the stomach, loss of appetite, weight loss and

vomiting.

P

QR

S

Caseinogens + water Rennin Casein

Plasticine

Cashew nut

20 ml water

Thermometer

Pin

[KNOWLEDGE/B6/E]

27 Diagram 19 shows part of the human digestive system.

Diagram 19

Which part of the digestive system carry out the enzymatic reaction below?

A P C R B Q D S

[COMPREHENSION/B6/S]

28 Diagram 20 shows the set up of an experiment to determine the calorific value of a cashew nut. When 0.4 g of cashew nut is completely burnt, the temperature of water rises up from 30°C to 70°C. (Specific heat capacity of water is 4.2 Jg-1°C-1)

Diagram 20

What is the energy value of the cashew nut?A 1.4 kJg−¹ C 8.4 kJg−¹B 3.4 kJg−¹ D 76.2 kJg−¹

10

Faecal pellets

A

B

C

D

Structure P

[APPLICATION/B6/H]

29 Which of the following process occur in a liver?A Absorption C DefeacationB Digestion D Assimilation

[KNOWLEDGE/B6/E]

30 Diagram 21 shows the digestive system of a rabbit.

Diagram 21

Which of the parts labelled A, B, C or D has the most cellulose digesting bacteria?[KNOWLEDGE/B6/E]

31 Diagram 22 shows parts of the human alimentary canal.

Diagram 22Structure P stores bile. A patient in hospital has had the structure removed and needs a special diet. Which menu would be most suitable for this patient?A Fish in cheese sauce and fruit pieB Sausages, boiled potato and cream cakeC Skinless chicken, green salad and fresh orangeD Fried fish, potato chips and sweet rice

[APPLICATION/B6/H]

32 The following statements refer to stage X during photosynthesis.

11

Hydrogen ions are produced ATP is produced Water molecules are broken down

SunlightChlorophyll

Y-tube

Bell jar

Balloon

Rubber sheet

Thread

What is stage X?A Decomposition of hydrocarbonsB Reduction of carbon dioxideC Photolysis of waterD Production of glucose

[KNOWLEDGE/B6/E]

33 Diagram 23 shows the structure of a villus

Diagram 23Which of the following nutrients are found in P?A Fatty acids and glycerol C GlucoseB Amino acids D Vitamin C

[KNOWLEDGE/B6/E]

34 The following equation shows the process of photosynthesis.

P + Water Q + R

What is represented by P, Q and R?P Q R

A Glucose Water OxygenB Oxygen Glucose Carbon dioxideC Carbon dioxide Energy OxygenD Carbon dioxide Glucose Oxygen

[KNOWLEDGE/B6/E]

35 Diagram 24 shows a model of a human lung.

Diagram 24

12

P

Q

P

R

Oxygen

Carbon dioxide Muscle

Concentration of lactic acid

Time

R S T

What happens when the thread is pulled downwards?A Air rushes in and fills up the balloonsB The volume of the bell jar decreasesC The pressure in the bell jar increasesD The volume of the balloons decreases slowly

[COMPREHENSION/B7/E]

36 Which of the following is the correct equation for the respiration of yeast?A glucose →lactic acid+energyB glucose →carbon dioxide+ethanol+energyC glucose+oxygen→ carbondioxide+ethanol+energyD glucose+oxygen→ carbondioxide+water+ethanol+energy

[KNOWLEDGE/B7/E]

37 Diagram 25 shows the respiratory system of an insect.

Diagram 25What are P, Q and R?

P Q RA Spiracle Trachea TracheoleB Trachea Tracheole SpiracleC Spiracle Tracheole TracheaD Tracheole Trachea Spiracle

[KNOWLEDGE/B7/E]

38 The graph in Diagram 26 shows the concentration of lactic acid in the blood of an athlete.

Diagram 26

13

Absorption of CO2 increase

Release of CO2 increase

Compensation

Low HighLight intensity

During which period of time, R, S or T shows the athlete exercising?A Period R C Period TB Period S D Period R + S

[COMPREHENSION/B7/M]

39 Diagram 27 shows a relationship between the light intensity, the compensation point and the rate of photosynthesis in plants.

Diagram 27Which of the following describe about the compensation point on the graph?A All the carbon dioxide produced during respiration is used in photosynthesisB The rate of photosynthesis is lower than respirationC The rate of photosynthesis is higher than respirationD The rate of respiration is lower than photosynthesis

[COMPREHENSION/B7/M]

40 Diagram 28 shows paddy plants in a paddy field.

Diagram 28

What are the products of respiration in the leaves and roots?Products of respiration in leaves Products of respiration in roots

A Carbon dioxide and water Lactic acid and carbon dioxideB Carbon dioxide and water Ethanol and carbon dioxideC Lactic acid and carbon dioxide Carbon dioxide and waterD Ethanol and carbon dioxide Carbon dioxide and water

[APPLICATION/B7/H]

41 A student tried to estimate the population of snails in his school garden. He caught and marks 150 snails before releasing them back to the same garden. After 5 days, he caught 87 snails and found that 35 of them were unmarked.What is the estimated population of the snails in the garden?A 20 C 250

14

Water

Remora fish

Shark

B 90 D 373[COMPREHENSION/B8/M]

42 The following information is related to a process occurring in an ecosystem.

Which of the following refer to above statement?A Colonisation C CompetitionB Succession D Evolution

[KNOWLEDGE/B8/E]

43 Diagram 29 shows a type of interaction between two organisms.

Diagram 29 Which of the following is the type of interaction that exists between these two organisms?A Parasitism C MutualismB Commensalism D Saprophytism

[KNOWLEDGE/B8/E]

44 Water samples P and Q were tested for pollution level. The results are as shown in the Table 1.Water sample Time taken for the methylene blue to decolourise (hour)

P 3Q 10

Table 1Which of the following is true about water sample P compared to Q?A Higher Biological Oxygen Demand (B.O.D) valueB Higher population of fishC Lower population of microorganismD Lower content of dissolved carbon dioxide

[COMPREHENSION/B9/M]

15

The pioneer species is replaced by a new species which is more adapted to the habitat

The process occurs gradually over a long period of time The process ends with a climax community

Number of organisms

Time

X

Y

45 Diagram 30 is a graph that shows the interaction between two organisms, X and Y.

Diagram 30What are the organisms X and Y?

[COMPREHENSION/B8/E]

46 Diagram 31 shows a food web in the forest.

Diagram 31Which organisms are secondary consumers in the food web?A Green plant onlyB Grasshoppers, rabbits and ratsC Frogs, snakes and eagles

16

X Y

A Predator Prey

B Competitor Predator

C Carnivore Herbivore

D Prey Predator

Sun

Layer of the atmosphere

Heat from the sun reflected by the earth

D Frogs, snakes and rabbits [COMPREHENSION/B8/E]

47 Which of the following gases can cause the formation of acid rain?A Chlorofluorocarbon (CFC) C MethaneB Sulphur dioxide D Ozone

[KNOWLEDGE/B9/E]

48 The following information shows steps in the reactions during the destruction of the ozone layer.

T Chlorine atom reacts with ozone to produce chlorine monoxide and oxygen molecules

U Free oxygen atom will break the chlorine monoxide bond

V Ultra violet ray breaks the chlorine chemical bond in CFC to produce free chlorine atom

W Free chlorine atom repeats the chain reaction

Which of the following sequences of steps is correct during ozone destruction?A T, V, U, W C V, T, U, WB U, T, V, W D V, U, T , W

[COMPREHENSION/B9/M]

49 Diagram 32 shows a phenomenon that occur on Earth.

Diagram 32

What is the phenomenon?A Greenhouse effect C Ozone depletion.B Air pollution D Radiation effect

[COMPREHENSION/B9/E]

50 The chlorofluorocarbons (CFCs) in the air condition of refrigerator have been replaced by hydrochlorofluorocarbon (HCFC).Which of the following statement explains the reason for the replacement?A HCFC reduce emission of chlorine that cause thinning of ozone layerB HCFC is not easily broken by the UV and help maintain the ozone layerC HCFC is a lot cooler gas compared to CFC

17

D HCFC is heavy gas so it does not rise to ozone[APPLICATION/B9/H]

18