PERFECT SCORE BIOLOGY2010

BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER

KEMENTERIAN PELAJARAN MALAYSIA

PERFECTSCOREBIOLOGY 2010

MODULE Form 5

Student’s Copy

DISEDIAKAN OLEH:

1. Puan Hasimah binti Azit - Sekolah Seri Puteri, Cyberjaya

2. Puan Tuan Norma binti Tuan Yaacob - SMS Alam Shah3. Encik Meli bin Hussin - SMS Kuala Terengganu

PAPER 2Section B

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PERFECT SCORE BIOLOGY2010

Question 1

Diagram 1 shows a ball and socket joint with tissues P, Q and which are responsible for locomotion in a human.

(a) Explain how bending of arm is brought by the structures P, Q, R and joints.

[10 marks]

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Question 2:

(a) Explain how the first line of defence can prevent the entry of pathogens into the body [6 marks]

(b) Explain the effect of taking fatty foods that have high cholesterol content to human healthy life.

[4 marks]

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PERFECT SCORE BIOLOGY2010

Question 3:

(a) Explain the principle involved in genetic engineering [2 marks]

(b) Discuss the importance of genetic engineering in the medical and agricultural field. [4 marks]

(c) Diagram 3 shows DNA finger printing. DNA finger printing is more scientific, accurate and advanced compared to the thumbprint in criminal investigation.

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PERFECT SCORE BIOLOGY2010

Discuss the use of DNA fingerprinting in the identification of the parents of a child. Based on your answer, identify the father of the child.

[4 marks]

Question 4

Diagram above shows the structure of HIV. The virus infects helper T cells of the human ‘s

immune system that caused AIDS, Acquired Immune Deficiency Syndrome.

i) Describe the effects of the human immunodeficiency virus (HIV) on the

body’s defence mechanism.

( 6 marks )

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PERFECT SCORE BIOLOGY2010

ii) Suggest ways to prevent the spread of Acquired Immune Deficiency Syndrome (AIDS).

( 4 marks )

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Question 5:

(c) Explain how the first line of defence can prevent the entry of pathogens into the body [6 marks]

(d) Explain the effect of taking fatty foods that have high cholesterol content to human healthy life.

[4 marks]

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PERFECT SCORE BIOLOGY2010

Question 6:

(d) Explain the principle involved in genetic engineering [2 marks]

(e) Discuss the importance of genetic engineering in the medical and agricultural field. [4 marks]

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PERFECT SCORE BIOLOGY2010

(f) Diagram 8 shows DNA finger printing. DNA finger printing is more scientific, accurate and advanced compared to the thumbprint in criminal investigation.

Discuss the use of DNA fingerprinting in the identification of the parents of a child. Based on your answer, identify the father of the child.

[4 marks]

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PERFECT SCORE BIOLOGY2010

Question 8:

(a) The following statements are on lymphatic system and blood circulatory system.

The substances that come out from the blood capillaries into the body tissue will be reentered into the blood circulatory system.

Lymphatic system also functions in transporting products of digestion.

Explain the above statements to justify that lymphatic system is a complementary to the blood circulatory system.

[10 marks]

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PERFECT SCORE BIOLOGY2010

(b) Multicellular organisms like humans, need specific transport systems as compared to unicellular organisms like Amoeba sp., which do not need a transport system.

Give an evaluation of the above statement based on the physical features of the organisms with the following physiological processes :

Respiration Nutrition Excretion

[10 marks]

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PERFECT SCORE BIOLOGY2010

9 (a) Figure 6.1 shows Eichhornia sp. in its habitat.

Explain the adaptations of the plant which enable it to float on the water surface. [4 marks]

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PERFECT SCORE BIOLOGY2010

(b) Figure 6.2 shows the movements of an earthworm and a fish in different habitats.

Explain how skeletal system of each organism is adapted for its movement. [6 marks]

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PERFECT SCORE BIOLOGY2010

(c) Figure 9.3 shows movement activities in a human.

Based on Figure 9.3(i) and Figure 9.3(ii), explain how the above movement takes place which involves muscles, tendons, bones, ligaments and joints.

[10 marks]

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PERFECT SCORE BIOLOGY2010

10 (a) Figure 7(a) shows a reflex arc and Figure 7(b) shows the regulating of glucose in the blood. Both figure illustrate coordination systems in the human body.

(i) Describe the reflex action in Figure 7(a)[4 marks]

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(ii) Compare the coordination system shown in Figure 7(a) and 7(b) [6 marks]

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(b) Figure 7(c) shows the organs and glands involve in regulating the humanbody temperature.

A student skates on the ice skating rink. Based on the Figure 7(c), explain how regulation of the student’s body temperature occurs.

[10 marks]

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PERFECT SCORE BIOLOGY2010

11a. Figure 7.1 shows a physiological process in a human.

(a) Describe the process shown in Figure 7.1 (4 marks)

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PERFECT SCORE BIOLOGY2010

Human chorionic gonadothrophin hormone (HCH) has a similar role to luteinisinghormone (LH). The woman has a problem conceiving due to failure in ovulation.The woman becomes pregnant after a doctor has given her injections of HCG.

(b) Based on the above statement, explain how the HCG injections enable the process ofpregnancy.

(6 marks)

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(c) (i) Figure 7.2 shows the formation of two pairs of twins.

Explain the similarities and differences in the formation of the two pairs of twins.

(4 marks)

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PERFECT SCORE BIOLOGY2010

(ii) Figure 7.3 shows another two pairs of twins.

Explain the differences between the two pairs of twins. Your explanation should be based on the following aspects: Types of twins The formation of twins Characteristics of twins

(6marks)

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PERFECT SCORE BIOLOGY2010

12(a) Illustrate the above statements using the following cross:

Female X Male

Parent Black mouse White mouse

Parent Female Male(Homozygote) (Homozygote)

Genotype HH hhKey:

meiosis H ~ Black alleleGamete H h h ~ White allele

fertilisationOffspringGenotype Hh

Phenotype Black

Phenotype ratio All black

Genotype ratio All black(10 marks)

(b) Discuss the control of mice population using the chemical K

[10 marks]

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PERFECT SCORE BIOLOGY2010

13. (a) Figure 8(a) shows the different characteristics among members of a family.

Based on the Figure 8(a), identify the different characteristics among the family members. Discuss how the difference in characteristics is inherited.

[10 marks]

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(b) Figure 8(b) shows a genetic pedigree of haemophilia in three generations.

Statement I : Haemophilia is a genetic disease that could be inherited and occurs within a specific gender.

Statement II : Inheritance of haemophilia can be prevented in a family.

State your opinion and explain both the statements mentioned , based on Figure 8(b)

(10 marks)

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PERFECT SCORE BIOLOGY2010

Question 14

(a) Diagram 1 shows the profile of two pairs of twins.

Twin A Twin B Twin P Twin Q

Diagram 1

A and B are identical twins whereas P and Q are fraternal twins. Explain the differences between the two pairs of twins based on the following aspects:

The formation of the twins

Characteristics of the twins [4 marks]

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(b)

PERFECT SCORE BIOLOGY 2010

The probability of getting a son or a daughter is thesame.

Explain the above statement.[10 marks]

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(c) Transfer of genes or DNA from an organism to another organism plays an important role in genetic engineering. Describe how this method is used to produce insulin

[6 marks]

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Question 15

Diagram 2(a) below shows a reflex arc that involves three types of neurone.

P Receptor

Q

Effectors

R

Diagram 2(a)

a) Based on Diagram 2(a), explain how the muscles can response if the hand was picked by a thumbtack.

[4 marks]

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b) Explain the effects of the injured to the parts labelled P, Q and R. [6 marks]

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c) Diagram 2(b) shows the negative feedback mechanism that regulates the blood glucose level in human.

Diagram 2(b) Based on Diagram 7(b),

(i) State the meaning of negative feedback mechanism.

(ii) Describe how hormone X and Y regulates the blood glucose level in humans. [10 marks]

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PERFECT SCORE BIOLOGY2010

Question 16

(a) Diagram 3(a) shows the blood circulatory system in human.

Circulation A

Circulation B

Diagram 8(a)

Based on diagram 3(a), name and explain the difference between circulation A and B. [6 marks]

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(b) Diagram 3(b) shows stages of the contraction of the heart muscle.

Semi lunarvalve

Atrium

Tricuspidvalve

Diagram 8(b)

Based on diagram 3(b), describe the flow of blood in the heart

2010

Ventricle

[6 marks]

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QUESTION 17

Primaryphloem

Vascularcambium

Primaryxylem

Secondaryphloem

Secondaryxylem

PERFECT SCORE BIOLOGY 2010

Parenchymacell

A B

D C Intervascularcambium

DIAGRAM 4

Diagram 4 shows the stages of secondary growth in the stem of dicotyledonous plants.

(a) Explain the stages of growth that happen in the shoot of dicotyledonous plants which produced the primary tissues as shown at section A in Diagram 4.

[10 marks] Analysis

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(b) (i) Explain the necessity of secondary growth to the dicotyledonous plants.

[4 marks] Understanding

(ii) Describe how the secondary growth happens starting from section A to the section D in Diagram 4

[6 marks] Application

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PERFECT SCORE BIOLOGY2010

(a) Table 1 shows the concentration of solutes in the blood plasma, glomerular filtrate and urine of an adult.

Concentration of solutes (g/dm³)

Solute Blood plasma inthe afferent

arterioleGlomerular

filtrateUrine

Glucose 1.0 1.0 0.0

Amino acid 1.5 1.5 0.0

Protein 80.0 0.0 0.0

Urea 0.3 0.3 20.0

Sodium ion, Na+ 3.2 3.2 1.6

Table 1

Based on Table 1, explain why the concentration of solutes in the blood plasma, glomerular filtrate and urine of the adult differ. Suggest the condition of his health.

[10 marks] Synthesis

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(b) Diagram 5 shows part of the blood circulatory system and the lymphatic system in the human body.

Venule

Fluid P

Fluid Q

Diagram 5

(i) Explain the differences between the composition of fluid P and fluid Q

[4 marks]

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(ii) Describe how fluid Q is formed from blood until it is brought back into the bloodcirculatory system.

[6 marks]

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