trial bio PAPER 1.doc

7/29/2019 trial bio PAPER 1.doc

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For question 1 to 50, each question is followed by four options.A, B, C, andD. Choose one correct

answer for each question and blacken the corresponding space in your objective answer sheet.

SECTION A

1. The following information are features of an organelle in a cell.

Spherical or oblong shaped

Smooth outer membrane and folded inner membrane

Which of the following organelles has features as stated above?

A Vacuole C Chloroplast

B Nucleus D Mitochondria

2. The diagram shows an aquatic organism.

What is the process of substances moving in and out as shown by the organisms?

A Osmosis C Facilitated diffusion

B Diffusion D Active transport

3. The figure shows the breaking down of a complex molecule by an enzyme. Which of the molecules

A, B, C orD, represents the substrate?

4. The main components of a plant cell membrane are

A Lipid and carbohydrate C Protein and lipid

B Protein and carbohydrates D Protein, lipid and carbohydrate

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5. G1, G2, M and S in the figure shows the phases of a cell cycle in an organisms.

Which of the following is the correct sequence of the interphase stage?

A G1 S G2 C G2 M G1

B S G2 M D M G1 S

6. The diagram shows the liquid composition of the human body.

Which of the form the internal environment?

A P, Q, R C P, R, S

B Q, R, S D P, Q, S

7. Which of the following is a connective tissue?

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8. The information below shows four food classes and their energy content. Which of the following

represents fats?

Food classes Energy content/ kJ per 100 gA 30

B 3 300

C 1 700

D 1 600

9. The diagram shows the structure of a chloroplast seen under an electron microscope.

Which of the following processes occurs in X?

A Reduction of carbon dioxide by hydrogen C Production of glucose

B Dissociation of water molecule by sunlight D Production of starch

10.

The above equation shows

A Condensation of glucose C Anaerobic respiration

B Hydrolysis of glucose D Aerobic respiration

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.

The figure shows the circulatory system of a fish.

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Glucose + Oxygen carbon dioxide + water + ATP


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What is organ X?

A Lung C Stomach

B Kidney D Heart

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.

The figure shows a cross section of a young dicotyledon root consisting of a few maintissues.

What is Y?

A Phloem C Cortex

B Xylem D Cambium

13.

In an experiment to investigate the vascular system of a plant, the root of a balsam plantis immersed into eosin solution. This is to..

A Stain the xylem tissues C Strengthen the xylem cell wall

B Stain the phloem tissues D Increase turgidity of root cells

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.

The diagram shows a knee joint

Which of the following tissues joins X to Y?

A Ligament C Adipose

B Tendon D Cartilage

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.

The diagram shows parts of the human brain.

Which of the following pairs of part of brain and its function is correct?

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Part of brain Function

A P Control peristalsis movement

B Q Controls balancing of body

C R Controls thinking

D S Control rate of heart beat

16. What is the function of the axon of a sensory neuron?

A To release neurotransmitter in the synaptic cleft

B To carry impulses away form the cell body

C To speed up the conduction of impulse

D To carry impulse towards the cell body

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.

What is the name of the process of shedding skin in insects?

A Chemotaxis C Dialysis

B Thrombosis D Ecdysis

18. What best describes double federalization?

A One male gamete fertilizes two polar nuclei

B One male gamete fertilizes one egg cell and two fused polar nuclei

C One male gamete fertilizes one egg cell and another male gamete fertilizes two polar nuclei

D One male gamete fertilizes one egg cell and another male gamete fertilizes one polar nucleus

19

.

The figure shows a pair of homologous chromosomes. The alphabets represent the genes in

the chromosomes.

T and t represent

A Alleles C Phenotype

B Genotype D Linked genes

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.

Which of the following traits was used in Mendels experiment?

A Colour of leaf C Size of fruit

B Number of seeds D Height of plant

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21.

The diagram shows a karyotype of a male suffering from a type of genetic disease.

The genetic disease suffered by the man is

A Haemophilia C Downs syndrome

B Turners syndrome D Klinefelters syndrome

22

.

The diagram shows the feeding method of organisms X.

What is the feeding method of organisms X?

A Holozoic C Saprophytic

B Parasitic D Autotrophic

23. A former mining ground can form a primary forest. Which of the following sequence is

correct in the formation of the primary forest?

A Successor, climax community, pioneer

B Pioneer, climax community, successor

C Successor, pioneer, climax community

D Pioneer, successor, climax cimmunity

24. What is biochemical oxygen demand (BOD)?

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A The quantity of oxygen produced by an aquatic organism

B The quantity of oxygen used by an aquatic organisms

C Indicator to measure the level of water pollution

D Indicator of the amount of a water pollutant

25

.

The following information is about eutrophication.

Which of the following sequences is correct about the eutrophication process?

A S P Q R C S Q R P

B P S R Q D Q S P R

26. The diagram shows a typical animal cell.

Which of the following is true about the functions of organelles X and Y?

Function of organelles X Function of organelle Y

A Site of lipid synthesis Site of protein modification

B Site of protein modification Site of protein synthesis

C Site of protein synthesis Site of lipid synthesis

D Site of glycoprotein modification Site of protein synthesis

27. An experiment was carried out to investigate the effect of concentration of sucrose solution on the

mass of potato.

The initial mass of potato pieces was obtained. They were left in sucrose solution and the final mass

was obtained. The graph sows the result of the experiment.

Which of the graphs A, B, C and D, maybe expected if the concentration of the sucrose solution is

increased beyond 0.04 mol dm-3?

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P - Algae grow and cover the surface of the lake

Q - The rate of bacteria reproduction increases

R - BOD value increases

S - Organic fertilizer flows into the lake


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Enzyme Y is

A Salivary amylase C Trypsin

B Pepsin D Rennin

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30. The diagram shows cross sections of the leaves of four different hibiscus species. Which of the

following leaves A, B, C or D, will produce the highest rate of photosynthesis?

A C

B D

31

.

The diagram shows a human digestive system. Which of the parts A, B, C or D, produces

an enzymes that hydrolyses fats?

32

.

Which of the following information is true for both photosynthesis and aerobic respiration?

Photosynthesis Aerobic respirationA Cell that carries out the

process

Cells with chloroplasts All types of living cells

B Condition at which process

takes place

Presence of light Absence of light

C Substrate Water and carbon dioxide Glucose

D Products Glucose, oxygen and water Carbon dioxide, ethanol and energy

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33. An experiment was carried out to investigate the rate of water loss from a plant in a day. The wind

and relative humidity factors were kept constant.

The graph shows the result obtained from 0600 to 1300 hours. Which of the curves A, B, C or D is

expected to shows the rate of water loss in the plant after 1300 hours?

34. The diagram shows the structure of human forearm.

What happens to the parts P, Q, R and S which cause the arm to be in the position as shown in the diagram?

P Q R S

A Relaxes Contract Is pushed downwards Is pushed downwards

B Contract Relaxes Is pushed downwards Is pushed downwards

C Relaxes Contract Is pulled upwards Is pulled upwards

D Contract Relaxes Is pulled upwards Is pulled upwards

35.

Which of the following reactions occur in the childs body?

I Blood glucose level increases

II Metabolic rate increases

III Body temperature decreases

IV Rate of heart beat increases

A I and II only C I, II, and IV only

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A child run very fast when chased by a fierce dog


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B III and IV only D II, III, and IV only

36. The diagram shows stages in the development of an embryo sac in the ovule of a flowering plant.

P

Q

What are P, Q and R?

P Q R

A Mitosis Meiosis 4 haploid nuclei

B Mitosis Meiosis 8 haploid nuclei

C Meiosis Mitosis 4 haploid nuclei

D Meiosis Mitosis 8 haploid nuclei

37. The diagram shows a longitudinal section of the root of a plant.

Which of the cells P, Q, R or S are present in Zone III?

A P and Q C P and S

B Q and R D R and S

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Embryo sacMother cell 4 megasporeCells

Youngembryo sac

Mature embryo

sac R


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38 The figure shows the inheritance of two traits in pea plants.

The alleles for smooth seed (S) is dominant to the allele for wrinkled seed.

The alleles for purple flower (U) is dominant to the allele for white flower.

Genotype of plant Q is

A S S U U C s s U U

B S S u u D s s U u

39.

Which of the following graphs represent the variation shown by the characteristics of the leaves?

A C

B D

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The mango plant leaves has a various sizes.


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40. The increase in global temperature due to deforestation causes?

I soil erosionII climatic change

III air pollution

IV rise in sea level

A I and II only C I, II and IV only

B II and IV only D II, III and IV only

41. The table shows changes in a cell during mitosis.

What are P, Q, R and S?

P Q R S

A Anaphase Metaphase Prophase Telophase

B Metaphase Prophase Telophase AnaphaseC Telophase Anaphase Metaphase Prophase

D Prophase Telophase Anaphase Metaphase

42. The diagram shows a child suffering from a disease.

Which of the food A, B, C or D, should be taken often by the child to recover from the disease?

A C

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Belly is bloated


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B D

43. The table shows the types and quantity of food taken by a student in day.

Types of food Quantity/g Energy/ kJ per 100 g

Rice 200 2 000

Butter 50 3 000

Potatoes 100 500

Milk 200 300

Banana 50 50

Chicken 100 800

The total energy obtained by the student is

A 6 425 kJ C 7 425 kJ

B 6 650 kJ D 8 950 kJ

44.

Which of the following should be done by the patient to maintain a normal blood sugar

level?

A Take glucose injections C Take insulin and glucagon injectionsB Take balanced diet D Reduce intake of high calorie food

45. An experiment was carried out to investigate the rate of transpiration in a plant using a photometer.

The figure shows the set up of the apparatus, time taken in minutes and the distance covered by the

meniscus of the water in cm.

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A medical check-up shows that a patients pancreas isdamaged and has to be removed.


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Time /

minute

Position of meniscus

0

10

The rate of transpiration in the plant is

A 0.2 cm minute-1 C 5.0 cm minute-1

B 2.0 cm minute-1 D 50.0 cm minute-1

46. The diagram shows human bones.

Which bones are parts of the axial skeleton?

A P and S C P. Q and R

B Q and R D Q, R and S

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47. Figure 1 shows the response of a maize coleoptiles to auxin in an experiment

Figure 1

Another experiment produces a response as shown in Figure 2

Figure 2

Which of the following treatment will produce the response as shown in Figure 2?

A P and R C P. R and S

B Q and S D Q, R and S

48. The graph shows the changes of progesterone level in a woman.

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Which of the following occurs at point Y?

A The embryo continues to grow C The woman has a miscarriage

B The growth of the embryo slows down D The woman has an ectopic pregnancy

49. The figure shows a monohybrid cross between durian tree P and durian tree Q. 50% of the offspring

are tall and 50% are dwarf.

If durian tree R is crossed with durian tree S, what percentage of the trees produced will be dwarf?

A 0 % C 50%

B 25 % D 75 %

50. The table shows the result of a study on the population of garden snails in a vegetable garden.

Number of garden snailsVisit Marked Unmarked

First 200 -

Second (After a week) 50 80

The estimated population size of the garden snails is

A 20 C 320

B 125 D 520

END OF QUESTION PAPER

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