Spm Biology 2006 K1

4r"

dl6J

ryq .. *T{,-"18..

PaperL Instructionz

I

.

:a " '

.

Time: t hour 15minutes This questionpaper consistsof 50 questions.Answer all questions.

The following statements are about an .organelle of a cell. Exist freely in the cytoplasm or attached to the rough endoplasmic reticulum Site of the protein synthesis. What is the organelle? A Vacuole B Nucleus .A Ribosome. D Golgi body

A

The cucumber cell wall prevents it from shrinking B The cell sap is hypotonic towards the sucrose solution _p The high concentration of the cell sap in the vacuole causes water to diffirse in D The cucumber cell wall allows the' sucrose molecules to diffuse into the cell Which of the following onion cells immersed in a hypotgnic Solution?

Diagram 1 shows the structure of a plant cell.

k'

I

B

i)

iir#'

lli'ffi rffi

C Diagram

I

qFe

Whieh of the following is true about X? A Semipermeable B Elastic ",€" Fully permeable D Risid 3

Cucumber slices are sucrose solution. After are found to be turgid Which of the following this phenomenon?

D

immersed in O . L V o B hours, the slices and hard. ' statements explains

tt7

@ @

@

@

'an Dia g ra m 2 s h o ws e x p e rim e n t t o investigate the movement of substances through a visking tube.

Which ofthe followingis true about enzvmes R and S?

Distilled water Sucrose solution

Enzyme R

A Beginning of experiment

Visking tube

Diagram

End of experiment

2

A plant cell is immersed in distilled water. Which of the following is true about the movement of water molecules in the early stage? A The rate of water molecules .exiting the cell is higher than enterirrg th" ""ll .B The rate of water molecules entering the cell is higher than exiting the cell C No water molecules are entering or exiting the cell D The rate of water molecules entering and exiting the cell is the same

The active site changes at pH more than 7

C R is trypsin

S is lipase

D Synthe'sizeld in

Synthesized in the the smooth endoplasmic reticulum

the rough endoplasmic reticulum

Diagram 4 shows the phases in the cell cycle.

Prophase--

Anaphase----*

E* Diagrarn

4

Stage X A The chromosomes start to shorten and. thicken

somes have replicated

Stage Y The chromosomes form chromatids which move to the opposite poles of the cell The chromosomes start to elongate and not clearly visible

ar.. r:a

The chromoThe chromosomes somes are at the are at the opposite equator plane poles in the eell

optimum pH 8.5

D The chromosomes form twin chromatids 45

6 7 8 9 10L172 Diagrarn

E

Which of the following statements is true about the chromosomes at stages X and Y?

B The chromo-

Diagram 3 shows the rate of enzyme hyd.rolysis reactions, R and S, in the human body.

Rate of reaction

3

r19 L--

Secreted into the duodenum

changes at pH more than 4

The vitamin that functions as a coenzvme <- - in cell respiration is A A -.vitamin vitamin B -E C vitamin C D vitamin K 8

Secreted in the stomach

B The active site

What is the process that takes place in Diagram 2? A Osmosis "'P Active transport C Facilitated diffusion D Facilitated transportation

6

Enz5rme S

The homologous chromosomes are paired

10 Which of the following diagrams is true about.a stage in mitosis?

13 Diagram 6 shows how gl'ucose changes to glycogen in the human bodv.

A

High glucose level

B Normal glucose level

1 1 Diagram 5 shows a diploid cell. This cell undergoes cell division through meiosis.

-)0-1-\

Diagram

/---\

O0)rl \

Which of the following represent hormones P and Q?

-:,b': -z

Diagram

6

Hormone b

Which of the following shows the btage where the number of chromosomes starts to,reduce to half?

^ffiTNrffiN ru#/ \$gu

P

Hormone Q

A Insulin

Glucagon

B

Insulin

Glucagon

C Adrenaline

Insulin

D Thyroxine

Adrenaline

14 Diagram 7 show a type of plant tissue.

Thickening of cell wall by substance X

L2 Which of the following is a c-o4qg-q!ive tissue? A I

Diagram Z IF"! is the importance of the thickening of cell wall by substanceX? 4 Tb transfer photosynthesisproducts B To grve turgidity to the tissue C Tb transfer water and mineral salts . fo give suppor t and m echani c al / ./ strength

12L

15 Diagram 8 shows a child suffering from disease.

A B

EI

carbohydrate fibre protein vitamin

& D

}4\

1 6 Which of the.following is true about the enzyrne and its function? Enz5rme

ffi

Diagram 8 The child suffers the disease because of lack of

Function

A

Rennin

Clots milk

B

Pepsin

Emulsifies milk

C

Tlypsin

Digests fat

D

Erepsin

Hydrolyses fat

17 Table 1 shows the nutrient content of R, s, T and u in milk and butter. Nutrient

Food

content (Vo\

R

s

T

U

Milk

3.0

89.0

4.5

3.6

Butter

o.5

16.5

0.0

83.0

TabIe What is represented by R, S, T and U?

R

S

Protein

T

U

Water

Carbohydrate

Fat

B Water

Protein

Fat

Carbohydrate

C Carbohydiate

Fat

Protein

Water

D Protein

Carbohydrate

Water

Fat

18 Diagram 9 shows the graph of the volume of carbon dioxide taken in or released by a plant in a forest at different light intensities '\blume

of carbon dioxide

Intake of carbon dioxide Intensity of light .

Release of carbon dioxide

Diagram t23

g

Which of the following is true about the information obtained from the graph? A At point W, the quantity of carbon dioxide released is zero point X, the quantity of the intake Pz tt ,,'' and the release of carbon dioxide are equal C At point Y; the quantity of carbon dioxide released is maximum D At point Z,the quantity of the intake and the release of carbon dioxide are equal 19 Diagram 10 shows an experiment of, yeast respiration.

Paraffin oil

2't Diagram 11 shows a longitudinal section of a human heart.

.--

TT

Diagrom 11 The blood vessel U is the A aorta B pulmonar5rvein C pulmonary artery D posterior vena cava

22 Which of the following descriptions is true

Mixtureoflgof yeast and 20 mI of l0o/o glucose solution

about blood cells?

Diagram

10

Which of the following mixtures can increase the rate of respiration of yeast? A 1 g of yeast and 2b ml of 5% glucose solution B 1 g of yeast and, 2E ml of Z% glucose solution C 1 g of yeast and 2E ml of 10% glucose solution D 1 g of yeast and 2b ml of 1b% glucose solution " 20 The followinginformation shows the results of an experiment to determine the oxygen content in exhaled air using J-tube. Length of exhaled air column

=

Length of exhaled air column after treatment with potassium hydroxide

= 9.6 cm

Length of exhaled air column after treatment with potassium pyrogallate

= g.b cm

10.0 cm

Biconcave in shape to enable the exchange of shape while passing.the blood capillary

Without nucleus and involved in the blood clotting mechanism Produced in the bone marrow and produce antibodies to destrov pathogens

Without granules and destroy pathogens by phagocytosis 23 Thrombin, fibrin, prothrombin and fibrinogen are four types of proteins. Which of the following sequencesis true for the involvement of th'ese proteins during blood clotting? A Thr ombin, fibr in, pr othr ombi n, fibrinogen B Fibr in, pr othr om bin, fibr inogen, thrombin C Prothrombin, thrombin, fibrinogen, fibrin D Fibr inogen, fibr in,.pr othr ombi n, thrombin

The percentage of oxygen content in the exhaled air is A 4.2% c Ll.O% B 8.5% D 2L.Oo/o 125

24 Diagram L2 shows a condition of a stoma. Minor pectoralis muscles

Sternum

ffi

Major pectoralis muscles

Bird P

' Diagram 12 Which.of the following factors cause the stoma to be in the condition as in Diagram L2? I High intensity of light. U High air humidity ru High concentration of oxygen.in the atmosphere IV High concentration of carbon dioxide in the atmosphere A I and III B I and IV. C II and III D II and tV 25 A student steps on a rustSriron nail while playrng football in a field. What tieatment Should be given to the student? A Polio vaccine iniection B Tlphoid vaccine injection C Diphtheria serum injection D Antitetanus serum injection 26 Which of the following help to support an aquatic plant? I Aerenchyma tissues II " Air bladder ilI Guard cells ry Buoyancy force A I, II and III B I, IIandW C I I , n l a n d f V" D I, III and fV 27 Diagram 13'showsa pair of breast muscles of two birds. The major pectoralis muscle of bird P is normal while the major pectoralis muscle of bird Q is abnormal.

Major pectoralis muscles

Bird Q

Diagram

13

What is the effect of the abnormality on bird Q? A It can fly higher \B The upward movement of the wings is weaker C The downward movement of the wings is weaker D The upward and downward movements of the wings are more rapid while flyrng

28 Diagram L4 shows a sJrnapse at the nerve ending.

Mitochondrion Vesicle

Synaptic bulb SubstanceP

Diagram

14

What is substance P? ' .. C Adrenaline A Acetycholine ' B O x y t o c in DP ro la c t in 29 How can goitre be prevented? Eat more seafood zn' -,A B Reduce the intake of food which is high in fat C Get an immunisation by injection of vaccine D Reduce the. long exposure .to direct sunlight

r27

30 A farmer wants to sell the bananas from his farm. To ensure that all the bananas ripen at the same time, the farmer shouJd spray the bananas with . A ethylene hormone ,: B auxin hormone C gibberellin hormone D cytokinin hormone 31 Which of the following is not an effect of a hormone imbalance? A Premenstrual s5mdrome (pMS) B Foetus miscarriage C Menopause D Pregnancy .

Which of the following statements is true about the information on the graph? A Body length increases at eS because of the soft exoskeleton B Body length increases at eS because body mass increases C Body length does not increases at pe because there is no development in body tissue D Body length does not increase at pe because body mass does not increase .

35 Diagram 17 shows'a method of producing fruits from flowering plants using auxin horrnone.

32 Which of the following hormones repairs the endometrium of the uterus after menstruation occurs? A Oestrogen horurone . B Progestrone hormone C Luteinizing hormone D Follicle stimulating hormone

Auxin hormone

33 Diagram 15 shows a cell that is involved in human reproduction.

Diagram

Diagram lZ

15

How is the fruit produced by this method different from the fruit produced naturally? A The fruit is sweeter B The fruit is more succulent C The fruit has more fibre D The fruit does not have seeds

Which of the following is not an important characteristic of the cell in the reprobuction process? A T'he presence of a nucleuS B T'he presence of c;rtoplasm C It has a tail D Contains a lot of mitochondria

34 Diagram l-6 is a graph which shows the growth of a grasshopper. Body length / mm 4..5

4.0 3.5 3.0 2.5 2.0 1.5

Egg stage

Time / days

Di4grarn 129

16

36 Which of the following is not true about the formation of identical twins and fraternal twins? Identical

twins

Fraterrral twins

A

Produced from a single sperm cell whieh fertilised one ovum

Produced from two sperm cells which fertilised two different ovums

B

Produce two different zygotes

Produce two similar zygotes

C

Share the same placenta

Have two seperate placentas

D

Produce two identical individuals

Produce two different individuals

37 Which of the following terms defines the physical characteristics of an organism? A GenotSrye B Phenogpe C Homozygote D Heterozygote

40 A manied couple has different rhesus Rh factors. Their first child is a Rh+. All the subsequent pregnancies end with miscarriage. Determine the rhesus factors for the parents, and the miscarriage foetus.

38 What is the technique used to transfer genes from the DNA of one speciesto the DNA of another species? A Cloning B Dihybrid cross C Genetic engineering. D Monohybrid cross

Father Mother Miscaniage

39 Diagram 18 shows the karyotype of an individual.

.le

20

*x

rr

22

Rh-

Rh-

B

Rh+

Rh-

Rh+

c

Rh-

Rh+

Rh+

D

Rh-

Rh+

Rh-

BbA B C D

?ra {rx itx -Tl' 21

Rh+

4L The following information shows the alleles belonging to a pair of married couple.

Il| (r lr fifiillr ttf 4l4nr!xpir{r o'tl qn Xl rxx

A

foetus

Ir.,

Dominant allele for normal eyesight Recessiveallele for colour blindness

XbY x XBY X XbY X XBy x

XBXb XBXb Xry(B XbXb "

xi.

Diagram 18 Which of the following showsthe number of chromosomesin a gamete producedby the individual? . A 22+Y " B 2 2 + YY C 44 +Y D 44+X

42 Which of the following is a discontinuous variation? I Able to roll the tongue il Ear lobe shapd' III Have cheek dimple IV Blood group A I and II only B III and fV only C I, III and IV only D .I, U, UI and fV :..

131

43 Diagram 19 shows the variation of a trait P in humans. Number of individuais

45 Diagram 2t shows part of the nitrogen cycle. Plant protein -

Animal protein

I

\ \

@

Ammonium compound \/ \

,,N qry

Tlait P Diagram

19

,/

Bactena

Diagram 21

Which of the following is true about the variation of trait P? A Involves bnly a pair of genes B Involves clear differences in the traits between individuals C Influenced by environmental factors only D Influenced by genetic and environmental factors

Name bacteria X. A Rhizobium B Lactobacillus

C Nitrobacter D Nitrosomonas

46 Diagram 22 shows a crab with barnacles on its sheU.

Barnacles

44 Diagram 20 is a chart which shows the distribution of a characteristic in human population Diagram Number of individuals

22

What is the interaction between the crab and the barnacles? A Parasitism B Mutualism C Saprophytism D Commensalism

47 TLrefollowing information is about a habitat. Habitat Size Tlpe of plant

Characteristic

Diagram 20

: Bushes :..50m x 100 m : Wpody, dwarf and creeping plants

Which of the following is the most suitable method to use to estimate the population of woody plants in the habitat? A Q u a d ra t o f s iz e lmX lm B Q u a d ra t o f s iz e b mX b m C Line transect D Belt transect

Which of the following characteristics is shown by the chart? A Height B Body size C Skin colour D Blood group 133

48 The following information is related to a process occurring in an ecosystem. o The pioneer species is replaced by a new species which is more adapted to the habitat o The process occurs gradually over a long period of time o The process ends with a climax community

50 Table 2 showsthe result of an experiment to comparethe qualities of water from two areas,R and S. T[ater sarnple

The processis A colonisation B competition .C succession-. D evolution

Time taken for methylene blue to be decolourised / minutes

Area R

45

Area S

22 Table 2

49 The following information shows steps in the reactions during the destructiqn of the ozonelayer. P - Chlorine atom reacts with ozone to 1- produce chlorine monoxide and oxygen molecules Free oxygen atom will break the Q . ' chlorine monoxide bond R - Ultra violet ray breaks the chlorine . : chemical bond in CFC to produce free chlorine atom S - Free chlorine atom repeats the chain -i. reaction

Which of the following sequencesof stepsis correct during ozonedestruction? A RR,Q,S B Q,P,R,S C R , R Q , S. D R,Q,RS

135

Which of the following statements explain the result of the experiment? I Water sample from area R is more polluted than area S II Water sample from area R has lower B.O.D value than area S m Wabr sample from area R has les.*-, microorganisms than area S IV Water sample with higher B.O.D value causes slow decolourisation of methylene blue A I and III B II and III " C II and IV D III and IV

SPM EDGMINATION PAPER 2006 Paper 1 1C 2C 3C 4A 7B 8A 9C lOD 13AL4D15C16A 19D 20 C 2r B 22 B 25 D 26 B 27 C 28 A 31D 32 A 338 34 A 37 B 38C 39A 40 B 43D 44 D 45 D 46 D 49 C 508

5A 11A t7A18B 23 C 29 A 35D 4t D 47 A

68 t2 C 24 B 30A 36B 42D 48C