spm perfect score biology 2010-set-2

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PERFECT SCORE BIOLOGY 2010

BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PERFECT SCORE BIOLOGY

20102. Puan Tuan Norma binti Tuan Yaacob SMS Alam Shah 3. Encik Meli bin Hussin SMS Kuala Terengganu

MODULE Form 5Students CopyDISEDIAKAN OLEH: 1. Puan Hasimah binti Azit - Sekolah Seri Puteri, Cyberjaya

PAPER 2 Section B

1

PERFECT SCORE BIOLOGY 2010Question 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]

2

PERFECT SCORE BIOLOGY 2010Question 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]

3

PERFECT SCORE BIOLOGY 2010Question 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.

4

PERFECT SCORE BIOLOGY 2010Discuss 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 bodys defence mechanism. ( 6 marks )

5

PERFECT SCORE BIOLOGY 2010

ii)

Suggest ways to prevent the spread of Acquired Immune Deficiency Syndrome (AIDS). ( 4 marks )

6

PERFECT SCORE BIOLOGY 2010Question 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]

7

PERFECT SCORE BIOLOGY 2010Question 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]

8

PERFECT SCORE BIOLOGY 2010(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]

9

PERFECT SCORE BIOLOGY 2010Question 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]

10

PERFECT SCORE BIOLOGY 2010(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]

11

PERFECT SCORE BIOLOGY 20109 (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]

12

PERFECT SCORE BIOLOGY 2010(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]

13

PERFECT SCORE BIOLOGY 2010(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]

14

PERFECT SCORE BIOLOGY 201010 (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]

15

PERFECT SCORE BIOLOGY 2010(ii) Compare the coordination system shown in Figure 7(a) and 7(b) [6 marks]

16

PERFECT SCORE BIOLOGY 2010

(b)

Figure 7(c) shows the organs and glands involve in regulating the human body temperature.

A student skates on the ice skating rink. Based on the Figure 7(c), explain how regulation of the students body temperature occurs. [10 marks]

17

PERFECT SCORE BIOLOGY 201011a. Figure 7.1 shows a physiological process in a human.

(a)

Describe the process shown in Figure 7.1 (4 marks)

18

PERFECT SCORE BIOLOGY 2010

Human chorionic gonadothrophin hormone (HCH) has a similar role to luteinising hormone (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 of pregnancy. (6 marks)

19

PERFECT SCORE BIOLOGY 2010(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)

20

PERFECT SCORE BIOLOGY 2010

(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)

21

PERFECT SCORE BIOLOGY 201012(a) Illustrate the above statements using the following cross:

Female Parent Black mouse

X

Male White mouse

Parent Genotype Gamete Offspring Genotype Phenotype Phenotype ratio Genotype ratio (b) meiosis

Female (Homozygote) HH H

Male (Homozygote) hh h

Key: H ~ Black allele h ~ White allele

fertilisation Hh Black All black All black (10 marks)

Discuss the control of mice population using the chemical K [10 marks]

22

PERFECT SCORE BIOLOGY 201013. (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]

23

PERFECT SCORE BIOLOGY 2010(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)

24

PERFECT SCORE BIOLOGY 2010Question 14 (a) Diagram 1 shows the profile of two pairs of twins.

Twin A

Twin BDiagram 1

Twin P

Twin Q

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]

25

PERFECT SCORE BIOLOGY2010The probability of getting a son or a daughter is the same. Explain the above statement. [10 marks]

(b)

26

PERFECT SCORE BIOLOGY 2010(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]

27

PERFECT SCORE BIOLOGY 2010Question 15 Diagram 2(a) below shows a reflex arc that involves three types of neurone.

PReceptor

Q

Effectors

RDiagram 2(a) a) Based on Diagram 2(a), explain how the muscles can response if the hand was picked by a thumbtack. [4 marks]

28

PERFECT SCORE BIOLOGY 2010b) Explain the effects of the injured to the parts labelled P, Q and R. [6 marks]

29

PERFECT SCORE BIOLOGY 2010c) Diagram 2(b) shows the negative feedback mechanism that regulates the blood glucose level in human.

Based on Diagram 7(b), (i) (ii)

Diagram 2(b)

State the meaning of negative feedback mechanism. Describe how hormone X and Y regulates the blood glucose level in humans. [10 marks]

30

PERFECT SCORE BIOLOGY 2010Question 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]

31

PERFECT SCORE BIOLOGY(b) Diagram 3(b) shows stages of the contraction of the heart muscle. Semi lunar valve Atrium

2010

Ventricle Tricuspid valve

Diagram 8(b) Based on diagram 3(b), describe the flow of blood in the heart [6 marks]

32

PERFECT SCORE BIOLOGY2010QUESTION 17 Primary phloem Vascular cambium Primary xylem Parenchyma cell

A

B

DSecondary phloem

C

Intervascular cambium

Secondary xylem 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 d