5AK 2010

5IS 2010...

Dear Everybody...

Biology... = the study of life...

Lets explore our life in the interesting and enjoyable subject...
B I O L O G Y . . .

Science & Maths Week '08

Skema Jawapan Ujian 1 Tkn 4

PART A (OBJECTIVE QUESTION)

ANSWER :

1. C 11.C

2. B 12.C

3. D 13.D

4. D 14.A

5. B 15.B

6. A 16.C

7. A 17.C

8. B 18.B

9. A 19.D

10.D 20.B

PART B (STRUCTURED QUESTION)

1. a) K = liver

L = stomach 4 correct – 2 m

M = duodenum 2 or 3 correct – 1 m

N = ileum (small intestine – REJECT) 1 only correct – 0 m

b) Cell à Tissue à Organ à System à Organism -------------------------- 1 m

c) Shoot system --------------------------------------------------------------------- 1m

List the organ : leaf / flower / bud / stem / shoot / fruit ------ (any 2) ---- 2 m

OR

Root system ---------------------------------------------------------------------- 1 m

List the organ : root / root hair ------------------------------------------------ 2 m

d) i) Nervous system / Integumentary system /

Circulatory system / Muscular system /

Endocrine system ----------------------------------------- (any 2) ---- 2 m

ii) Nervous system – detect the changes(increases or decreases) of

temperature.

Integumentary system – stop or increase sweating process.

Circulatory system – blood vessel(arteriole) will either constrict

(vasoconstriction) or dilate(vasodilation).

Muscular system – hair erector muscle will either contract to raise the

hairs or relax to lower the hairs.

Endocrine system – secrete more or less adrenaline / thyroxine hormone.

* any 2 correct explanation ------------- 2 m

2. a) X = phospholipid bilayer ------------------------------------------- 1 m

Y = carrier protein --------------------------------------------------- 1 m

Z = pore / channel protein ------------------------------------------ 1 m

b) i) 1. hydrophilic head ------------------------------------------------------------ 1 m

2. hydrophobic tail ------------------------------------------------------------ 1 m

ii) Characteristic : semi permeable / selectively permeable membrane ---- 1 m

Explanation : a membrane that allows only certain molecules /

substances / particles to pass through it -------------------- 1 m

iii) Main function :

Acts as a barrier between the internal & external environment of the cell //

Allows only specific molecules to pass through it //

Provide the structural basis for all cell membrane -------(any 1) --------- 1 m

c) i) Simple diffusion ----------------------------------------------------------------- 1 m

ii) Example :

· F1 : Gasses exchange at alveolus / body cells/tissues ---------------- 1 m

P1 - Oxygen that is in higher concentration at the alveolus

compare to in the blood capillary,

P2 - (so) Oxygen will diffuse from the alveolus to the blood

capillary.

P3 - Carbon dioxide that is more concentrated in the blood

capillary compare to in the alveolus

P4 - (so) Carbon dioxide will diffuse from the blood capillary to

the alveolus

F1 + any 2P --------------------------------------------------------------- 2 m

3 m

* similar explanation for at body cell/tissue

· F2 : Gasses exchange in unicellular organism ------------------------ 1 m

P1 - Oxygen is higher concentration in the water / surrounding

compare to in the Amoeba sp. / Paramecium sp. / unicellular

organism

P2 - (so) Oxygen will diffuse from the water into Amoeba sp. /

Paramecium sp. /the unicellular organism

P3 - Carbon dioxide is higher concentration in the Amoeba sp. /

Paramecium sp. / unicellular organism compare to in the

water / surrounding

P4 - (so) Carbon dioxide will diffuse from the Amoeba sp. /

Paramecium sp. / unicellular organism to the water /

surrounding

F2 + any 2P --------------------------------------------------------------- 2 m

3 m

PART C (ESSAY QUESTION)

1. i)

Amoeba sp.	Structure / Living processes	Paramecium sp.
Present	Pseudopodium	Absent
One	Number of contractile vacuole	Two
Absent	Cilia / Cillium	Present
One	Number of nucleus	Two / Micronucleus & macronucleus
With the help of pseudopodium	Movement / Locomotion	With the help of the cillium
Binary Fission or form spores when it’s in unfavourable condition	Reproduction	Binary Fission or conjugation when it’s in unfavourable condition

* any 4 correct differences ------------------------------ 4 marks

ii)

· Situation 1(S1) : Plant is not enough water ------------------------ 1mark

P1 – Transpiration is higher than water absorption -------------- 1 mark

P2 – More water molecules will diffuse out from stomata ------ 1 mark

3 marks

· Situation 2(S2) : Ecessive fertilizer given to the plant ----------- 1 mark

P1 – The soil becomes hypertonic // Root hair cell becomes hypotonic,

due to ecessive fertilizer. --------------------------------------- 1 mark

P2 – Water molecules will diffuse out from the root hair cells to the

soil ---------------------------------------------------------------- 1 mark

P3 – by / due to / via OSMOSIS ------------------------------------ 1 mark

* S2 + any 2P = 3 marks

ALam FLora....

The Good Observations in Bio Lab...

When you eat, always revise your NUTRITION topic...

KEPUTUSAN SPM 2009; SUBJEK BIOLOGI

Dengan seramai 9 orang yang memperolehi 'straight A', keputusan subjek Biologi ada sedikit kemerosotan..namun subjek Biologi masih tetap dapat mengekalkan, gred terendah yang diperolehi hanya setakat C; tiada D mahupun E.

Berikut adalah keputusan penuhnya :

A = 6 orang (6.98%)
A- = 9 orang (10.5%)
B+ = 17 orang (19.8%)
B = 23 orang (26.7%)
C+ = 27 orang (31.4%)
C = 4 orang (4.65%)

Sekalung tahniah & syabas kepada semua, terutama yang telah menyumbangkan A kepada subjek ini untuk tahun ini.

Kepada calon-calon SPM tahun 2010, semoga anda akan dapat mencipta sejarah yang setanding dengan kecemerlangan yang diharapkan.. Insya Allah...

Experimental Processes

- Pegaga -

Kenali Tumbuhan Herba di sekeliling kita

Selamat Datang....

Asslamua'laikum....

Atas kekangan yang ada, hari ini baru dapat di'maujud'kan Blog Panitia Biologi ini. Maaf dipinta.... Semoga akan lebih banyak ruang waktu untuk ditambahkan kualiti Blog kita bersama ini...