bahan teknik menjawab 2013

8/13/2019 Bahan Teknik Menjawab 2013

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SPM 2010 [Soalan 9(a)

Sample 1

Steamed fish is a source of protein. In R

(Stomach), stomach uice !hich secretes pepsin

and h"drochloric acid is secreted #" the epithelial

!all of stomach. $he h"drochloric acid pro%ides

an acidic en%ironment !hich is optimum for the

en&"me reaction in stomach. Pepsin and the

churmin' of stomach helps to h"drol"se lar'e

protein molecules into pol"peptide.

Protein !ater pol"peptides

In S (duodenum) the pancreatic uice is

secreted #" the pancrease. $he pancreatic uice

contains tr"psin. $r"psin !ors in a sli'ht"l"

alaline en%ironment of p* +.-. to h"drol"se

pol"peptides into simpler dipeptides.

Pol"peptides !ater dipeptides

In $ (small intestine) erepsin is secreted #"

the !all of small intestine. $he erepsin h"drol"ses

dipeptides into amino acids in an optimum p* of

p* +.1-p* .2. $hen the amino acids are a#sor#edinto the #loodstream.

/ipeptides !ater amino acids

(1010 m)

1

pepsin

tr"psin

erepsin


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SPM 2010 [Soalan 9(#)

Sample 2

$he lon' term effect of consumin' ecess#read, #utter and fried chicen on the indi%idual3s

health is the indi%idual ma" 'et o#esit", heart

attac, an'ina and cardio%ascular disease. $his is

#ecause the ecessi%e intae of #read , #utter and

fried chicen !ill cause hi'h cholesterol in the

#od". 4read contain car#oh"drate. /urin'

assimilation the ecess 'lucose !ill con%ert into

'l"co'en !ith help of insulin. $he car#oh"drate is

used to pro%ide ener'" and used for etracellular

respiration. 4ut !hen the indi%idual tae it in

ecessi%e, the ecessi%e 'lucose !ill con%ert into

fat and stored in the adipose tissue. 4utter

contain hi'h amount of fats.$he ecessi%e fat !illstored into the li%er. So the ecessi%e fat !ill

stored in the adipose tissue. $his cause hi'h

cholesterol in the #od". $he cholesterol can

deposite in the !all of arter" and can cause heart

disease. Moreo%er the hi'h fats and cholesterol

!ill cause o#esit".

[+10 mars

2


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Sample 5

4read contain a lots of car#oh"drate.

6onsumin' a lot of car#oh"drates could cause arapid 'ro!th of indi%idual. $his can cause an

o#esit". Indi%idual !ill easil" 'et a disease and

this can cause a death to the indi%idual.

4utter contain a lot of fats. 6onsumin' a lot of

fats can cause an increase of cholesterolconcentration in the #od". $his can #rin' to a

dan'erous disease such as dia#etes mellitus and

o#esit". 4esides that, it can a''lutinate at the

arter" and pre%ent to #lood flo!. $his is no!n as

the arteriosclerosis.

7ried chicen contain a lot of fats, protein and

car#oh"drate. 6onsumin' an ecess of the fried

chicen can affect an indi%idual3s health. It can

cause dia#etes mellitus as it increase the

concentration of cholesterol in our #od". It also

can cause atherosclerosis !here the arter" is

#loc #" a 'rumple of cholesterol.

[810 mars

3


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Sample 8

4read contain car#oh"drate. $he complete

di'estion of #read produce 'lucose. hen ecess

#read is taen for lon' term, there !ill ecess

'lucose in the #od". $he person can suffer

dia#etes mellitus. $here is insufficient amount of

insulin to con%ert ecess 'lucose into 'l"cerol.

$he ecess 'l"co'en is also stored as fat under

the sin this can lead to o%er!ei'ht condition.

4utter is a t"pe of food !hich contains hi'h

le%el of fat. 6onsumin' too mush fat !ill lead to

o#esit". It mi'ht cause cardio%ascular disease

such as hi'h #lood pressure as alon' term

effects.

7ried chicen contains hi'h le%el of proteinl.

:cess protein is con%erted to urea

[1010 mars

4


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SPM 2012 [Soalan (a)

Sample 1

hen the nucleus of a sperm cell fuses !ith

the nucleus of e'' cell, fertilisation occurred. $he

fertilised cell is a &"'ote. $he cell di%ides to form

t!o cell sta'e, four cell sta'e, ei'ht cell sta'e and

e%entuall" form a #all of cells no!n as morula.

$he #all of cells mo%e alon' the fallopian tu#e.

Morula continues to di%ide and form hundreds of

cells called #lastoc"st. 4lastoc"st consists inner

cell mass and outer la"er of thropho#last. $he

#lastoc"st mo%es to the uterus !all . $he inner

cell mass im#edded into the uterus !all and this

process is implantation.

[88 mars

5


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SPM 2012 [Soalan (a)

Sample 2

hen the secondar" ooc"te has #een

fertillised #" a sperm, the meiosis II process !ill

#e completed. $he cell under'oes mitosis to form

a &"'ote. It #ecomes a morula, !hich is an ei'ht

cell sta'e. ;et, it #ecomes a #lastoc"te. 7inall" it

#ecomes an em#r"o and it attaches it self to the

uterine !all !hich rich !ith #lood %essels. $his is

called implantation

[58 mars

6

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