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NAME: MICHAEL TIMSON

DATE:

FORM: L6-4

SUBJECT: Biology

TITLE: THE EFFECT OF THE DECOMPOSITION OF HYDROGEN PEROXIDE

CONCENTRATIONS BY CATALASE

AIM: To !"!#$i%! "&! !''!(") o' "&! !(o$*o)i"io% o' &y#og!% *!#o+i! (o%(!%"#,"io%) y

(,",l,)!.

INTRODUCTION:

Mol!(/l!) "&," ,((!l!#,"!0 o# (,",ly1! ,(&!$i(,l #!,("io%) ,#! 2%o3% ,) !%1y$!). I%

#!,("io%) )/(& ,) "&!)!0 "&! $ol!(/l!) 'o/% ," "&! !gi%%i%g o' "&! *#o(!)) ,#! (,ll! )/)"#,"!).

E%1y$!) (o%!#") "&!)! )/)"#,"!) i%"o i''!#!%" $ol!(/l!)0 (,ll!*#o/("). Mo)" $!",oli(

#!,("io%) 'o/% i% (!ll)0 #!5/i#! i%ol/"io% o' !%1y$!) (,",ly)" "o )"i$/l,"! "&!)! *#o(!))!) ," ,

',)"!# #,"!0 "o )/)",i% li'!. T&! "y*! o' !%1y$!) )y%"&!)i1! i% , (!ll !"!#$i%!) 3&i(& $!",oli(

*,"&3,y)o((/# i% "&," (!ll. E%1y$!) ,#! 2%o3% "o (,",ly1! $o#! "&,% 0777 io(&!$i(,l#!,("io% "y*!). Mo)" !%1y$!) ,#! *#o"!i%) 3i"& "&! !+(!*"io% o' , '!3 !i%g (,",ly"i( RNA

$ol!(/l!). E%1y$!)8 )*!(i'i(i"y (o$!) '#o$ "&!i# /%i5/! "!!-i$!%)io%,l )"#/("/#!). E%1y$!)

,#! g!%!#,lly glo/l,# *#o"!i%)0 ,("i%g ,lo%! o# i% l,#g!# (o$*l!+!). Li2! ,ll *#o"!i%)0 !%1y$!)

,#! li%!,# (&,i%) o' ,$i%o ,(i) "&," 'ol "o *#o/(! , "!!-i$!%)io%,l )"#/("/#!. T&! )!5/!%(!

o' "&! ,$i%o ,(i) )*!(i'i!) "&! )"#/("/#! 3&i(& i% "/#% !"!#$i%!) "&! (,",ly"i( ,("ii"y o' "&!

!%1y$!.

C,",l,)! i) , (o$$o% !%1y$! 'o/% i% %!,#ly ,ll lii%g o#g,%i)$) !+*o)! "o o+yg!%0)/(& ,) !g!",l!)0 '#/i" o# ,%i$,l). I" (,",ly1!) "&! !(o$*o)i"io% o' &y#og!% *!#o+i! "o

3,"!# ,% o+yg!%. I" i) , !#y i$*o#",%" !%1y$! i% *#o"!("i%g "&! (!ll '#o$ o+i,"i! ,$,g! y

#!,("i! o+yg!% )*!(i!). Li2!3i)!0 (,",l,)! &,) o%! o' "&! &ig&!)" "/#%o!# %/$!#) o' ,ll

!%1y$!)9 o%! (,",l,)! $ol!(/l! (,% (o%!#" ,**#o+i$,"!ly $illio% $ol!(/l!) o' &y#og!%

*!#o+i! "o 3,"!# ,% o+yg!% !,(& )!(o%. C,",l,)! i) , "!"#,$!# o' 'o/# *oly*!*"i! (&,i%)0

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!,(& o!# 77 ,$i%o ,(i) lo%g. I" (o%",i%) 'o/# *o#*&y#i% &!$! i#o%; g#o/*) "&," ,llo3 "&!

!%1y$! "o #!,(" 3i"& "&! &y#og!% *!#o+i!.

T&! #!,("io% o' (,",l,)! i% "&! !(o$*o)i"io% o' &y#og!% *!#o+i! i% lii%g "i))/!:

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METHOD

Fi! oili%g "/!) 3!#! l,!ll! A-D. T3!l! *o","o (yli%!#) 3!#! (/" i%"o 7.($ !,(&

/)i%g , (o#2 o#!#0 #/l!# ,% )(,l*!l. U)i%g , )y#i%g!0 ($ ?o' "&! H

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DISCUSSION

F#o$ "&! #!)/l") o",i%! i% "&i) !+*!#i$!%"0 i" i) )!!%0 i% "&! ",/l,"! #!)/l")0 ,) "&!

(o%(!%"#,"io% o' )/)"#,"! i%(#!,)!0 "&! "i$! ",2!% "o (o$*l!"! "&! #!,("io% !(#!,)! ,% "&/)0

"&! i%i"i,l #,"! o' #!,("io% &, i%(#!,)!. A g#,*& o' i%i"i,l #,"! o' #!,("io% !#)/) )/)"#,"!(o%(!%"#,"io% 3,) !#i!. F#o$ "&! g#,*&0 i" 3,) )!!% "&," "&!#! 3,) , )ig%i'i(,%" i%(#!,)! '#o$

,% i%i"i,l #,"! o' #!,("io% 7 ," )/)"#,"! (o%(!%"#,"io% . "o ,% i%i"i,l #,"! o' 7.7?4 ," 6.

Ho3!!#0 "&! i%(#!,)!) i% "&! i%i"i,l #,"! o' #!,("io% !(#!,)!. T&," i)0 ,i"io% o' "&! )/)"#,"!

!g,% "o i)*l,y li""l! !''!(" !yo% "&," *oi%". T&!#!'o#!0 ,) "&! (o%(!%"#,"io% o' )/)"#,"!

i%(#!,)!)0 "&! #,"! o' #!,("io% ,l)o i%(#!,)!) /%"il "&! *oi%" ),"/#,"io% o((/#). I" $!,%) "&," ,)

"&!#! i) ,% i%(#!,)! i% "&! (o%(!%"#,"io%0 "&! i%i"i,l #,"! 2!!*) i%(#!,)i%g /%"il "&! o%! *oi%"

3&!#! "&! $,+i$/$ #,"! i) ,(&i!! ,% "&!#! i) %o '#!! !%1y$! "o i% 3i"& )/)"#,"! ,% ,ll

"&! ,("i! )i"!) o' !%1y$! ,#! o/% "o "&! )/)"#,"!. T&!#!'o#!0 ,i"io% o' )/)"#,"! !yo% "&i)

*oi%" &,! %o !''!(" o% "&! #,"! o' #!,("io%.

@i"&i% "&i) !+*!#i$!%" "&!#! 3!#! ,#io/) )o/#(!) o' !##o#). T&!#! 3!#! (o%",$i%,"io% o'

#!,g!%") "o )o$! !+"!%" 3&i(& 3o/l &,! ,''!("! "&! "i$! ",2!% i% "&! #!)/l") ,% &!%(! "&!

#,"! o' !(o$*o)i"io% o' &y#og!% *!#o+i! y (,",l,)!. T&! ',("o# o' #!,("io% "i$! 3,) ,l)o

i%ol! i% )"o**i%g "&! )"o*3,"(& ,% "&! !+*!#i$!%" 3,) (o%/("! i% ,% ,i# (o%i"io%i%g

!%i#o%$!%" ,% "&/) "!$*!#,"/#! 'l/("/,"io%) o((/##!. T!$*!#,"/#!0 !i%g o%! o' "&! ',("o#)

,''!("i%g i%i"i,l #,"! o' #!,("io%) o' "&! !%1y$,"i( ,("ii"i!)0 3o/l "&/) (,/)! , )lig&" !*l!"io%

i% "&! ,((/#,(y o' "&! #!)/l"). I" i) #!(o$$!%! "&," !'o#! (o%/("i%g "&! !+*!#i$!%"0 "&," ,ll

,**,#,"/) ,#! 3,)&! "&o#o/g&ly "o !%)/#! "&," "&!#! ,#! %o #!)i/! o' (&!$i(,l) o% "&!

,**,#,"/) 3&!% (o%/("i%g "&! !+*!#i$!%". Al)o0 "&! !+*!#i$!%" (o/l ! (o%/("! /)i%g $o#!

(o%(!%"#,"io%)0 &!%(! ,(5/i#i%g , $o#! ,((/#,"! o)!#,"io%) *!#",i%i%g "o "&! !''!(") o' "&!

i%(#!,)! o' &y#og!% *!#o+i! (o%(!%"#,"io%

CONCLUSION: @i"&i% "&! li$i" o' !+*!#i$!%",l !##o#0 i% i%(#!,)i%g )/)"#,"! (o%(!%"#,"io%0 "&!

"i$! ",2!% 'o# "&! #!,("io% "o ! (o$*l!"! !(#!,)!. T&!#!'o#!0 "&! i%i"i,l #,"! o' #!,("io% 3,)

i%(#!,)!.