Homework Help - Enzymes

[MadGamer]

Right im typing up my project for science (from rough copy) and i seem to have misplaced a sheet on Breaker and Builder enzymes. Does anyone know any sites on where i can obtain info on the mentioned subject?

PS. I have already tried BBC GCSE Bitesize but that didn't help. I have also tried Google.

[MetaWraith]

A possible place to start ?
http://www.worthington-biochem.com/introBiochem/introEnzymes.html

[MadGamer]

A possible place to start ?
http://www.worthington-biochem.com/introBiochem/introEnzymes.html
Nice try but still nothing. Sorry.

[Maggy]

I've found this.

Here (http://www.freefortermpapers.com/show_essay/59813.html)

Hope it helps.

[MetaWraith]

I don't condone using pre-written essays, but you may find some of the info you want in here.
http://www.coursework.info/30/

[Maggy]

I don't condone using pre-written essays, but you may find some of the info you want in here.
http://www.coursework.info/30/

Nice one Metawraithe. :tu:

[Plonking]

What exactly is it you need to know about these enzymes?

I did a level biology and did a whole load of stuff about them, but i'm not sure how much would be relevant or useful at GCSE level...?

[homealone]

I don't remember them being called 'builder' & 'breaker' enzymes, when I where a lad :)

lots of the general theory in Metawraiths first link still applies, though

I share Plonking's curiosity as to what WNA needs to know?

A definition?

- enzymes are proteins which act as catalysts for chemical reactions. all are originally of biological origin, some have recently been produced by the use of genetically modified micro-organisms. They work by lowering the activation energy for the reaction, but are, themselves, unchanged after the process.

-Builder enzymes catalyse constructive reactions, breaker enzymes catalyse destructive reactions.

Examples?

- Breaker enzymes are used to make glucose syrup from starch, the so called 'amylase' enzymes chop up the long starch molecule into smaller pieces.

- Breaker enzymes called 'restriction enzymes' are used in DNA sequencing to chop the DNA strand into smaller pieces, for analysis.

- Builder enzymes are used in the PCR technique, which 'multiplies' DNA from extremely small samples

there is a small animation in this link -

http://www.sciencemuseum.org.uk/exhibitions/genes/142.asp

- although it's mainly about DNA, there are other mentions of enzymes in some of the links off the page.

[MadGamer]

I don't remember them being called 'builder' & 'breaker' enzymes, when I where a lad :)

lots of the general theory in Metawraiths first link still applies, though

I share Plonking's curiosity as to what WNA needs to know?

A definition?

- enzymes are proteins which act as catalysts for chemical reactions. all are originally of biological origin, some have recently been produced by the use of genetically modified micro-organisms. They work by lowering the activation energy for the reaction, but are, themselves, unchanged after the process.

-Builder enzymes catalyse constructive reactions, breaker enzymes catalyse destructive reactions.

Examples?

- Breaker enzymes are used to make glucose syrup from starch, the so called 'amylase' enzymes chop up the long starch molecule into smaller pieces.

- Breaker enzymes called 'restriction enzymes' are used in DNA sequencing to chop the DNA strand into smaller pieces, for analysis.

- Builder enzymes are used in the PCR technique, which 'multiplies' DNA from extremely small samples

there is a small animation in this link -

http://www.sciencemuseum.org.uk/exhibitions/genes/142.asp

- although it's mainly about DNA, there are other mentions of enzymes in some of the links off the page. Thank you very much :)

[homealone]

Thank you very much :)

you're very welcome - now go & read Metawraith's links on effect of pH, temperature & concentration of substrate :p: :)

[Maggy]

Right I can't rep homealone so can somone do it for me.Stupid rep system!!

[MetaWraith]

lots of the general theory in Metawraiths first link still applies, thoughyou're very welcome - now go & read Metawraith's links on effect of pH, temperature & concentration of substrate :p: :)
Glad to see somebody did read the first link I posted. Though I must admit when I posted it that it was probably too "high brow" for GCSE.

Hmmmmm I wonder how long it takes before CableForum becomes a top hit in Google and other search engines for "Homework Help".

[MetaWraith]

Right I can't rep homealone so can somone do it for me.Stupid rep system!!
Done :tu:

[Shaun]

I'm always away when chemistry questions come up :(

[Paul K]

Hmmmm anyone want to think up a question to keep Dell happy? I'm sure we can think of a really difficult one if we try ;)