Question Paper 1

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Diagram 1 shows the structure of a plant cell as seen under light microscope. 1. Which of the parts labelled A, B, C or D controls the movement of substances in

and out of the cell?

Diagram 1

2. Which of the following represents the heart?

A Cell

B Tissue

C Organ

D System

3. Which of the following molecules are able to move across a semi-permeable

membrane?

I. Starch

II Glucose

III Water

IV Iodine

A I and II only.

B I and III only.

C I, III and IV only.

D II, III and IV only.

4. What is the process that transports substances across the plasma membrane with

the help of carrier proteins without using energy?

A Osmosis

B Simple diffusion

C Facilitated diffusion

D Active transport

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5. Diagram 2 shows two different concentrations of sucrose solution separated by

semi-permeable membrane.

Diagram 2

Which of the following does not happen when equilibrium is reached?

A The osmotic concentration in both P and Q are the same

B The solution level in Q is lower than the solution level in P

C Both P and Q have the same total number of sucrose molecules

D The water molecules in both P and Q moves across the semi-permeable

membrane at the same rate.

A hawker pickled slices of mango using high concentrated salt solution for 3 days.

Which of the followings shows the condition the cells after the process?

6.

B D C A

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7. 10 g of starch is mixed with 50 cm3 of enzyme solution at 15 ºC. After an hour, 2.5g

of starch is hydrolysed into sugar. The experiment is repeated at 25 ºC. How much

starch would be hydrolysed by the enzyme in the second experiment?

A 1.0 g

B 2.0 g

C 2.5 g

D 5.0 g

8. Which of the following factors affect the internal environment of a cell?

I. Blood glucose level

II pH

III Temperature

IV Osmotic pressure

A I, II and III

B I, II and IV

C II, III and IV

D I, II, III and IV

Diagram 3 shows a model of the mechanism of an enzymatic reaction 9.

Diagram 3

What are P, Q and R? Substrate Enzyme Product A P Q R B P R Q C Q P R

D R Q P

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10. Which of the following is the best term to complete the equation below ?

A chlorophyll

B water

C light

D starch

11. Diagram 4 shows one stage of a meiotic cell division.

Diagram 4

The possible chromosomes in each daughter cell are

I P and Q

II R and S

III Q and R

IV P and S

A I and II only

B III and IV only

C I, II and III only

D I,II, III and IV

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12. Diagram 5(a) shows the chromosomes in a parent cell. Diagram 5 (b) shows the

probable combination of chromosomes in the daughter cells after the parent cell

has undergone normal cell division.

Diagram 5(a) Parent cell

Diagram 5 (b) Daughter cells

Which of these statements are true?

I Cell L is diploid.

II Cell K is haploid.

III Cell M is a gamete.

IV Cell N is a product of meiosis.

A I and II only

B I, III and IV only

C I, II and III only

D I,II, III and IV

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13. Diagram 6 shows part of the structure of human digestive system.

Diagram 6

Which parts V, W, X or Y above secrete juices for fat digestion?

A V and Y

B W and Y

C X and Y

D X and V

Which of the following is produced from a meiotic division? 14.

A B

D C

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Diagram 7 shows one of the systems in a human. 15.

Diagram 7

Which of the following is the function of the system shown? A Converts complex molecules to simple molecules.

B Controls the body temperature. C Fights infection.

D For reproduction Diagram 8 shows the right proportion for the various classes of food in a food

pyramid.

16.

Diagram 8

Which of the following shows the correct classes of food in the pyramid? 1 2 3 4 A Fats Proteins Carbohydrates Vitamins and

minerals B Carbohydrates Vitamins and

minerals Proteins Fats

C Proteins Carbohydrates Fats Vitamins and minerals

D Carbohydrates Fats Vitamins and minerals

Proteins

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17. Diagram 9 shows a model of the small intestine.

Diagram 9

After 30 minutes, the water in the beaker will show the presence of

A glucose only.

B sucrose only.

C both glucose and sucrose .

D neither glucose nor sucrose .

18. Diagram 10 shows a flow chart which summarises the photosynthesis process.

Diagram 10

Which of the following represents P,Q and R?

P Q R

A Water Carbon dioxide Oxygen

B Water Oxygen Carbon dioxide

C Oxygen Water Carbon dioxide

D Carbon dioxide Oxygen Water

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Why do green plants absorb carbon dioxide and release oxygen at high intensity

of light?

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A Green plants carry out photosynthesis but not respiration. B Green plants carry out respiration but not photosynthesis. C Green plants carry out photosynthesis faster than respiration. D Green plants carry out respiration faster than photosynthesis.

Diagram 11 shows the set up of an experiment to determine the energy value of

food samples.

20.

Diagram 11 Four food samples, P, Q, R and S are used. Which of the following food samples

has the highest energy value?

Food sample Initial water Final water

temperature (oC) temperature (oC)

A P 20 70

B Q 22 70

C R 21 90

D S 25 90

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Diagram 12 shows the set-up of an experiment. 21.

Diagram 12

What would be the levels of the coloured water in the two tubes after two days?

Tube 1 Tube 2 A Decrease No change

B Increases No change C No change Increases D No change No change

22. In plant cells, the organelles that conduct photosynthesis and the organelles that

conduct cellular respiration are the…

A. tonoplast and mitochondria

B. tonoplast and cytoplasm

C. chloroplasts and mitochondria

D. chloroplasts and ribosome

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23. Diagram 13 shows the relationship between two processes, that occur in two

different organelles in cells.

Diagram 13

Which of the following is true about the processes

A. both of them need sun light.

B. both processes give out oxygen to be used by animals

C. the products of one are used as the raw material of the other

D. one is occurs only by plants and the other occurs in animal cells.

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24.

Diagram 14

Diagram 14 shows the structure of the tracheal system in the cockroach.

Which of the following about the labelled parts is not true?

A P Opening controlled by the cuticle

B S Gas dissolves in a thin film of fluid

C R Gaseous exchange occurs by diffusion

D Q Presence of chitin thickening prevents it from collapsing

Diagram 15 shows a cross-section of an alveolus and a capillary in the lungs. 25.

Diagram 15

What are the concentrations of oxygen at X,Y and Z?

X Y Z A Low Low High B Low High High C High Low Low D High High Low

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26. Which food chain transfers the most energy to human?

A Maize plant human

B Grass deer human

C Phytoplankton zooplankton human fish

D Maize plant grasshopper chicken human

27. Diagram 16 represents the energy flow through a food chain which consists of four

organisms.

Diagram 16

What is the total energy in the tissues of organism S if total energy in P is 9000kJ?

A 810 kJ

B 729 kJ

C 90 kJ

D 9 kJ

28. Diagram 17 shows a seedling found on a mangrove plant.

Diagram 17

Which of the followings is the advantage of having this type of seedlings?

A increases the chances of survival

B more resistance towards diseases

C increases the chances to be disperse

D more resistance towards climate changes

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29. Which of the effects of deforestation stated below causes soil erosion?

A Climate changes

B Root of trees die

C Less photosynthesis occurs

D Salt concentration in the soil decreases

30. Which of the following is the main greenhouse gas?

A Carbon dioxide

B Carbon monoxide

C CFCs

D Ozone

31. The red blood cell or erythrocyte

I produces antibodies

II transports oxygen as oxyhaemoglobin

III transports carbon dioxide as carbaminohaemoglobin

IV engulfs and ingests microorganisms that enter the bloodstream

A. I and IV only

B. II and III only

C. I,II and III only

D. I,II,III and IV

Which of the following involves active transport? 32.

C

.

A

.

D

.

B

.

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33. What is the most suitable immunity to be given to a person who stepped on a rusty

nail?

A Artificial passive immunity

B Artificial active immunity

C Natural passive immunity

D Natural active immunity

34. Transpiration is important because it

I has a cooling effect on the plant

II helps in the maintenance of the osmotic pressure of the cell sap

III helps in the transport of mineral salts from the roots to the leaves

IV creates a suction force which draws the water up the stem from the stem

A I, II and III only

B II, III and IV only

C I, III and IV only

D I, II,III and IV

35. Diagram 18 shows a synovial joint.

Diagram 18

What are the structures labelled X, Y and Z ?

X Y Z

A Muscle Ligament Bone

B Synovial membrane Tendon Cartilage

C Synovial membrane Ligament Bone

D Muscle Tendon Cartilage

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36. Diagram 19 shows a type of vertebra in the human vertebral column.

Diagram 19

How many of the vertebra shown can be found in the human vertebral

column?

A 4

8 5

C 7

D 12

37. Diagram 20 shows the earthworm moves forward, the anterior segment undergoes

Diagram 20

Longitudinal muscles Circular muscles

A Contraction Contraction

B Contraction Relaxation

C Relaxation Relaxation

D Relaxation Contraction

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38. Diagram 21 shows the structure of a synaptic terminal.

Diagram 21

What is P and its function?

Structure Function

A Vesicle Releases neurotransmitter

B Vesicle Transmits nerve impulses to the

synaptic cleft

C Mitochondrian Transmits nerve impulses to the

cell body

D Mitochondrian Generates energy to transmit

nerve impulses to the cell body

Which of the following shows the effects of the increase in adrenalin secretion? 39.

Concentration of

glucose in the blood

Concentration of glycogen

in the liver

A Increases Decreases B Increases Increases

C Decreases No effect D No effect Increases

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Diagram 21 shows the structure of a nephron. 40.

Diagram 21

Which of the following activities cause X to be more permeable to water.

A P and R

B P and S

C Q and R

D Q and S

41. What will happen to a person if the ventral roots of the spinal cord are cut?

A Able to detect changes and able to respond.

B Able to detect changes but not able to respond.

C Not able to detect changes but able to respond.

D Not able to detect changes and not able to respond.

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42. An experiment was carried out to study the effects of auxin on maize coleoptiles.

After a few days which shoot will bend towards the light?

A B

C D

43. Diagram 22 shows a series of process that occur in an ovary.

Diagram 22

Name the hormone produced by structure X.

A Progesterone

B Oestrogen

C Follicle – stimulating Hormone

D Luteinising Hormone

44. Diagram 23 shows an embryo in the uterus.

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Diagram 23

Which of the following is true about blood vessel Y and the substance it carries?

Blood vessel Substance carried A Artery

Waste substances

B Artery Oxygenated blood C Vein

Waste substances

D Vein Nutrients

45. Diagram 24 shows the cross section of a root tip.

Diagram 24

Which of the following is the characteristic of the cells in zone III?

A The cells are small and tightly packed

B The cells have big vacuoles

C The cells have a big nucleus

D The cells differentiate into tissues.

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46. A woman was advised by her doctor to tie the part labelled X in Diagram 25

Diagram 25

Which of the following is the consequence of the action if the women do so?

I unable to give birth

II unable to have menstruation

III still has menstruation

IV will experience menopause

A I and II only

B II and IV only

C I and III only

D III and IV only

47. What are the possible blood groups of children born to a woman who has blood

group AB and a man who has blood group O?

A. Blood groups A and B only

B. Blood group AB and O only

C. Blood groups A and O only

D. Blood groups A, B and O.

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48. A pair of identical twins may have different levels of intelligence if they are raised up

in difference families. This phenomenon shows that…

A. environment can influence the characteristic determine by a gene.

B. intelligence is determined by the environment.

C. genetic composition is changed by the environment.

D. environment has a strong effect on intelligence

49. Diagram 26 (a) shows free ear lobe while 26 (b) shows attached ear lobe.

Diagram 26 (a) Diagram 26 (b)

Which of the following are true about the phenotypes shown in the Figure 26 ?

l. it shows discontinuous variation

ll. the variation is normally controlled by a single gene.

lll. they are largely affected by the environment

lV. the variation can be inherited.

A. l and II

B. ll and lV

C. l, ll and lV

D. ll, lll and lV

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50. Diagram 27 shows the inheritance of the ability to roll the tongue of a husband and

the wife.

Diagram 27

What is the probability of their children to be able to roll their tongues?

A. 0%

B. 25%

C. 50%

D. 100%

END OF QUESTION PAPER

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Question Paper 1