Paper 1 SPM 2010

**Please refer to the Question Paper 1 Biology SPM 2010 for the Questions.

JAWAPAN KERTAS 1 BIOLOGI SPM 2010

1	B
2.	B
3.	C
4.	D
5.	A
6.	C
7.	B
8.	C
9.	B
10.	C
11.	B
12.	D
13.	B
14.	D
15.	C
16.	A
17.	C
18.	B
19.	B
20.	A
21.	D
22.	A
23.	A
24.	D
25.	A
26.	B
27.	A
28.	D
29.	C
30.	C
31.	C
32.	C
33.	D
34.	A
35.	C
36.	B
37.	C
38.	D
39.	B
40.	D
41.	A
42.	A
43.	C
44.	A
45.	D
46.	A
47.	A
48.	A
49.	D
50.	B

Sample Qs-Transpiration

Sample Question

SUGGESTED ANSWER

F1- Air movement/ Wind

E1-movement of air carries away water molecules that have diffused from the leaves.

E2-the faster the air movement / wind speed, the greater the rate of transpiration.

F2- Temperature

E3-rise in temperature increases the kinetic energy of water molecules

E4-increases the rate of evaporation (lowers the relative humidity of the air)

F3- Light intensity

E5-light intensity is increased, the rate of evaporation from a plant increases (not that light affects evaporation as such)

E6-but that it causes the stomata to open,

E7-thereby increasing water loss from the plant

F4- Relative humidity/Humidity

E8- High humidity surrounding the leaves reduce the evaporation of water from the stomata

E9-this causes transpiration to slow down

Courtesy from JPWP.

Bio Diagrams in Transport

Some of the Bio Diagrams related to the Chapter 1: Transport..5 Helpilia work!

Cross section of arteries,veins and capillary.

It is important for you to know the differences in STRUCTURE and FUNCTION between the three:

1.arteries,

2.veins and

3.capillary.

It can be asked in Paper 2 SPM.....And i hope these Diagrams would help !

Various sources from Net for educational purpose. TQ

Microscope Skill

It is debateble...when the lecturers of IPTA complained that when our school SPM leavers entered varsity and colleges..they do not know how to handle microscope..Dont blame the teachers.As far as I am concerned I will always make a point that they have this microscope skills...Preparing them for a higher level of education..And..they enjoyed observing cells and all micro stuff under it..

..Not forgetting, always start with low power...before changing it to higher power...Identifying the structures and draw accordingly..And use both eyes open when observing under microscope..

What they observed that day was the cross section of arteries, veins and capillary. Draw and label...And compare the three..It is included in our Bio syllabus...AND they are again form 5 Helpilia girls..

Lymphatic system

..And The lymphatic system is a new system for the form 5 girls. Its tough to explain without the teaching aids...Maybe by using Teaching Course ware, a chart, and a Diagram would be a great help.

And I asked them to draw and label the important components of the system..They draw it in their BIO DIAGRAM book..and also, answer the module by filling up the blanks with the correct terms..One lesson should be fine to answer and refer to any reference books....And this system is a complementary of the Blood Circulatory System..AND...

FAQ for essay Question in examination !

5 Helpilian girls !

TSA/V Ratio Concept

It is definitely difficult to understand the concept of TSA/V ratio unless you yourself calculate and discover the figures...And that was what I did with all my form 5 girls. Before ther are able to compare unicellular organism with multicelular organisms...let them find out the differences between the TSA/V RATIO of the two...by calculating...

And the conclusion:

The smaller size organism has higher TSA/ V Ratio..

...The smaller the size of the organism, the higher is the TSA/V ratio.

OR

AS the size of the organism increases, the TSA/ V ratio DECREASES..

The Introduction for Chapter 1: Transport: in Form 5 syllabus !

Sample Qs-Cardiovascular disease

Question 1:

Diagram 4.2(a) shows a healthy coronary artery.

Diagram 4.2(b) shows the coronary artery of a person with cardiovascular

disease. The coronary arteries supply blood to heart muscles.

Rajah 4.2(a) menunjukkan satu arteri koronari yang sihat.

Rajah 4.2(b) menunjukkan arteri koronari seorang pesakit kardiovaskular.

Arteri koronari membekalkan darah ke otot-otot jantung.

(i) Name deposit X.

Namakan enapan X.

(ii) Explain how the deposit X and thrombus lead to cardiovascular disease.

Terangkan bagaimana enapan X dan trombus mengakibatkan penyakit

kardiovaskular

(iii) Suggest two ways to maintain a healthy heart.

Cadangkan dua cara mengekalkan kesihatan jantung.

SUGGESTED ANSWER:

(i) Able to name deposit X.

Answer:

Cholesterols / fats / calcium

(ii)Able to explain how deposit X and thrombus lead to cardiovascular

disease.

Sample answers:

-(Lumen of) arteries are narrowed / blocked.

- No / less oxygen / nutrients supplied to the heart (tissues) // No /

less energy produced (by respiration).

Any 1

-Heart tissues damage / died

-Heart stop beating // (Causing) angina / heart attack.

(iii)Able to suggest two ways to maintain a healthy heart.

Sample answers:

-Taking food low in cholesterols / (saturated) fats // Balance diet.

-Practice a healthy lifestyle / (regular) exercise / reduce stress.

Courtesy from SBP TRIAL 2010

Sample Qs-Blood clotting mechanism

1. Diagram shows a body defence mechanism.

Rajah menunjukkan satu mekanisme pertahanan badan.

(a) Explain the body’s response towards the entry of bacteria into the body.

Terangkan gerak balas badan terhadap kemasukan bakteria ke dalam badan. [4 m]

(b) Microorganisms are very useful in medicinal field. They are widely used in

biotechnology in producing substances to fight against diseases.

Explain this statement by using two examples of the application.

Mikroorganisma adalah sangat berguna dalam bidang perubatan. Mikroorganisma

digunakan dengan meluas dalam bioteknologi bagi menghasilkan bahan untuk

melawan penyakit.

Terangkan pernyataan ini dengan menggunakan dua contoh aplikasi. [ 6m]

Courtesy from SBP TRIAL 2010-

SUGGESTED ANSWER:

(a)

- Pathogens / bacteria succeed in penetrating the skin / first line of

defence.

-Chemicals / proteins / antigens (produced by the pathogens)

- Attract the phagocytes / neutrophils / macrophages / monocytes

(to the infected area)

-By using pseudopodia

- Surround / engulf / kill / destroy the pathogens / bacteria

-by lysozymes / lysosomes.

-A non-specific immune response.

(b)

Example 1

-The production of insulin.

-Insert human gene (which controls the synthesis of insulin) into bacteria

-Bacteria are cultured / multiplied

-Insulin produced (by bacteria is collected).

Any 3

Example 2

-The production of antiserum.

- (Specific) antigens / pathogens are injected into an animal.

-The animal produces (specific) antibody

-Antiserum is extracted / taken (from the animal’s blood).

-To stimulate passive immunity (in humans).

Any 3

Example 3

- The production of vaccine.

-(A suspension) containing weakened / dead antigens / pathogen.

-Injected into human (body / blood)

-To stimulate the production of antibody (actively) // to achieve

-active immunity.

Any 3

Example 4

-The production of antibiotics.

-Chemicals produced by microorganisms / Penicilium notatum /

-Streptomyces to kill other microorganisms / bacteria.

-Example: penicillin / streptomycin.

-Penicillin is used to treat gonorrhea / syphilis / lung infection.

-Streptomycin is used to treat tuberculosis / TB.

Any 3

Paper 1 SPM2010

BIO PAPER 1 SPM 2010 -

1. 1.Question 1: The following statements are characteristics of a cell structure.

- Permeable to all fluids

Telap kepada semua cecair

- Rigid and not elastic

Tegar dan tidak kenyal

Which structure has these characteristics?

A. Vacuole

Vakuol

B. Cell wall

Dinding sel

C. Golgi apparatus

Jasad Golgi

D. Plasma membrane

Membran plasma

ANSWER : B

Why B ???

2. 2. Question 2. Diagram 1 shows the structure of rough endoplasmic reticulum.

Which process occurs in the ribosomes?

A. Transportation of lipids

Pengangkutan lipid

B. Synthesis of proteins

Sintesis of proteins

C. Production of ATP

Penghasilan ATP

D. Digestion of phospholipids

ANSWER: B

Why B ?