IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: 1129alexander on May 19, 2010, 02:56:40 pm

Title: i need list of enzymes with their substrates and products :D
Post by: 1129alexander on May 19, 2010, 02:56:40 pm: i need list of enzymes with their substrates and products :D like
substrate enzyme product
starch maltose amylase
Title: Re: i need list of enzymes with their substrates and products :D
Post by: luv3life on May 19, 2010, 02:59:54 pm: I would like them too. :P
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 19, 2010, 05:22:00 pm: Enzyme Substrate Product

Amylase Starch Maltose
Protease(pepsin) Proteins Polypeptides
Protease(trypsin) Proteins and polypeptides Amino Acids
Lipase Emulsified fats Fatty Acids and Glycerol
Maltase Maltose Glucose
Sucrase Sucrose Glucose and fructose
Lactase Lactose Glucose and galactose
Peptidase Polypeptides Amino Acids

Hope that helps!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: DaeThen on May 19, 2010, 06:27:33 pm: Quote from: Moonlyte on May 19, 2010, 05:22:00 pm
Enzyme Substrate Product

Amylase Starch Maltose
Protease(pepsin) Proteins Polypeptides
Protease(trypsin) Proteins and polypeptides Amino Acids
Lipase Emulsified fats Fatty Acids and Glycerol
Maltase Maltose Glucose
Sucrase Sucrose Glucose and fructose
Lactase Lactose Glucose and galactose
Peptidase Polypeptides Amino Acids

dude....

i need help in lab tests...e.g. test if starch is present...etc.

can u tell me all the ones...?

Hope that helps!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 19, 2010, 06:58:09 pm: Food tests:

-Test for Starch:
Food + iodine sol’n = yellowish brown --> blue black

-Test for reducing sugar:
Food + Benedict’s sol’n = clear blue --> brick red (r for reducing sugar)
Note: Benect is long, reducing sugar is also long word, so long and long to together.

-Test for protein:
Food + Biuret’s sol’n (naOH + CuSO4) = blue --> purple (p for protein)
Note: protein is short, biuret is short word, so short and short go together.

-Test for Lipid:
(Food + ethanol) + water = cloudy white emulsion

-Test for vitamin C:
Food + DCPIP = blue --> colorless
Note: The less the time to decolorize, the more vit C the food contains
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 19, 2010, 06:58:53 pm: Good Luck!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: 1129alexander on May 19, 2010, 07:00:13 pm: well woooow thanks guyz i really liked ur results and thanks dudes and special thanks for moonlyte :D
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 20, 2010, 02:47:43 pm: No problem :)
Title: Re: i need list of enzymes with their substrates and products :D
Post by: K_M on May 21, 2010, 11:05:51 am: Quote from: Moonlyte on May 19, 2010, 06:58:09 pm
-Test for vitamin C:
Food + DCPIP = blue --> colorless
Note: The less the time to decolorize, the more vit C the food contains

what's DCPIP? Do we have to know it because its not in the syllabus!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 21, 2010, 06:00:31 pm: All i know is that its a blue dye...its written in my book (I study in Choueifat).....so we dont really have to know what is its full form...we just have to know its a blue dye that is used to test for vit. C
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Vin on May 21, 2010, 11:02:30 pm: its dichlorophenolindophenol :P
Title: Re: i need list of enzymes with their substrates and products :D
Post by: luv3life on May 22, 2010, 05:19:53 am: Thanx for the Enzymes & Food Test thingy, guys! :D
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 22, 2010, 01:45:48 pm: dichlorophenolindophenol...i can never memorize this in my entire lifetime!!!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Vin on May 22, 2010, 01:47:12 pm: Quote from: Moonlyte on May 22, 2010, 01:43:53 pm
wow....I'll never be able to memorise that in my entire lifetime!

LOL :D u dont need to .. obvi. u might kno tht tho .. haha googled it don't worry .. ;)
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 22, 2010, 01:58:45 pm: hehe yea....thats why they didnt mention it in the book...cause they knew we would freak out!!
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 22, 2010, 01:59:31 pm: weird....my "quote" button is not working....
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Vin on May 22, 2010, 02:12:56 pm: Quote from: Moonlyte on May 22, 2010, 01:59:31 pm
weird....my "quote" button is not working....

check again .. its working fine with me..
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 22, 2010, 02:16:24 pm: not working...it just says "loading" at the top of the page...
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Vin on May 22, 2010, 02:34:15 pm: try clicking it lik 50 times .. no luck then ask here ..

Help, Complaints and Suggestions. (https://studentforums.biz/index.php/board,2.0.html)
Title: Re: i need list of enzymes with their substrates and products :D
Post by: Moonlyte on May 22, 2010, 03:03:59 pm: thanks!