SAC 2?!!!?

[panicatthelunchbar]

Hi everyone,

What are you guys doing for your second SAC? Enzymes?
Also, the students from 2010 Year 12 Biol class, what did you guys do as SAC 2 last year?

Any advice, comments?

Thanks! 

[pi]

I did something about investigating the actions and effect of temperature on catalase and diastase (ie. amylase). To be honest, it was a fairly dull prac.

[scocliffe09]

We measured the effect of temperature on the functioning of catalase in potatoes - very similar prac to Rohitpi.
Advice? Make sure you understand and can explain terms such as:
organic catalyst
enzyme-substrate complex
lock and key model vs induced fit model
active site
Denaturing - remember that enzymes are proteins
activation energy

Understand and be able to draw graphs demonstrating the effect of substrate or enzyme concentration, temperature and pH on reaction rate. Be able to design and explain experiments testing each of these concepts

[panicatthelunchbar]

Hi scocliffe09,

Can you please explain what the terms organic catalyst and enzyme-substrate complex mean? I get very confused :/
Is organic catalyst basically a catalyst which can be denatured? I don't understand the organic part of it??

Thanks

[Greatness]

Isnt an organic catalyst like a protein?
Enzyme substrate complex is like how the enzyme and substrate bind together?

[HERculina]

organic catalyst = catalyst made of protein (an organic molecule) = enzymes!
btw are all our sacs gonna be pracs?
i dont like answering prac-type q.s :/

[pi]

varies from school to school. IN unit 3 MHS has 2 pracs, 1 test about a prac, and one website i think

DAMN THAT WEBSITE!

[pi]

lol . In year 10 we had one of the library people tell us how to make a website using dreamweaver.
I spent 10 hours and couldn't make an pages at all O.o

I got taught HTML in Uni High when Frontpage dies, so I just HTML'ed it and picked a cool theme. Just a bad SAC though, really pointless

[Truck]

Glad i made the mistake in yr 10 than in 3/4 bio though !

True that, wix ftw when it comes to building website projects.

[scocliffe09]

Hi scocliffe09,

Can you please explain what the terms organic catalyst and enzyme-substrate complex mean? I get very confused :/
Is organic catalyst basically a catalyst which can be denatured? I don't understand the organic part of it??

Thanks

organic = contains Carbon and Hydrogen, usually a complex molecule. Many catalysts are simpler molecules (metal ions for example) so enzymes are distinguished as being organic - and yes, they are proteins, a type of organic molecule.
catalyst - substance which speeds up a chemical reaction by lower its activation energy without being used up itself

substrates bind to the active site of the enzyme. At the point when the substrate is bound to the enzyme, an Enzyme-substrate complex is formed. this then splits into the products and enzyme again.

[Russ]

I suppose it should be said that not all enzymes are proteins but I don't think that's terribly important

[Arju94]

Alrite so our school is being gay  :knuppel2: and havent told us what prac it is, but I do know that its going to be looking at how ph and tempretures affect enzymes, thats because we went through working with data loggers-what do you guys reckon the prac is, the types of graphs formed and the types of questions that would be given

[Truck]

I suppose it should be said that not all enzymes are proteins but I don't think that's terribly important

So would you still define a Ribosome as an enzyme?

[Russ]

Oh wow, I'd never actually thought about it like that before but yeah, I would.

[dooodyo]

I thought ribosomes aren't enzymes but instead ribozymes are the non-protein catalysts.