Second Unit 3 SAC?

[Snorlax]

Just because the first one was useful to me/others
So, what are your schools doing?
-mines going to be quite similar to our first SAC: A practical + report + Application q's! - on enzymes

[pi]

I think I did something on amylase and liver pieces back in the day

[Jayward]

I think I did something on amylase and liver pieces back in the day

i got H2O2 on my hand during this sac -.-

[Snorlax]

i got H2O2 on my hand during this sac -.-

All i hear whenever talking about enzymes are Hydrogen Peroxide reactions! bahhh!

So, at the moment not sure about the practical we'll be doing...We always get informed on the day... SURPRISES. YAY.

[Bad Student]

I did mine today on diastase and starch.

[Daenerys Targaryen]

I had 4 kinds of liver, control, grounded, diced, and boiled.

and tested which was most effective.

covers surface area to volume ratios
denaturing of enzymes

[Smiley_]

I had 4 kinds of liver, control, grounded, diced, and boiled.

and tested which was most effective.

covers surface area to volume ratios
denaturing of enzymes

What kind of questions did you have ?


What othet types of things could we do ?

[Daenerys Targaryen]

This refering to SA:V ; which was best at making H2O2
Why was the boiled one crap at making H2O2 (or whatever the chemical was)
What does this suggest about the enzymes at high pH and low pH?
(we also tested each of them with different pH's)
Enzymes at different temperatures?

[Stick]

My second SAC is also an experiment with a test/write-up part to be completed in the next lesson, just like my first SAC. This SAC will cover enzymes, but I am not aware of the specifics of the practical component.

[Snorlax]

Quick question:
Is the lock-and-key model only for catabolic/exergonic reactions?
While the induced-fit model is for the anabolic/endogonic reactions?

Also, When talking about enzyme/substrate concentration its talking about the quantity/abundance of them, right?

[Bad Student]

Quick question:
Is the lock-and-key model only for catabolic/exergonic reactions?
While the induced-fit model is for the anabolic/endogonic reactions?

Both models are used to explain both types of reactions. The difference is that the lock and key model is an old, out of date explanation of how enzymes work while the induced fit model is the newer, currently supported model.

[Snorlax]

Both models are used to explain both types of reactions. The difference is that the lock and key model is an old, out of date explanation of how enzymes work while the induced fit model is the newer, currently supported model.

So the induced-fit model can be catabolic?
So a product can bind to the enzyme, then break up releasing energy?

[Stick]

Both models are used to explain both types of reactions. The difference is that the lock and key model is an old, out of date explanation of how enzymes work while the induced fit model is the newer, currently supported model.

Careful with your wording there - neither model hasn't been proven for sure yet. While I (and many others) would agree that the induced fit model does make more sense, you can't just say that it makes the first explanation incorrect.

[Bad Student]

Careful with your wording there - neither model hasn't been proven for sure yet. While I (and many others) would agree that the induced fit model does make more sense, you can't just say that it makes the first explanation incorrect.

I didn't explicitly state that the lock and key model was incorrect. Being old and out of date doesn't make it incorrect.

A good example of something which is old and out of date is Newton's theory of gravitation. Einstein's general theory of relativity has superceded Newton's theory but it hasn't made it incorrect.

[Smiley_]

so enzymes only speed up reactions?
ei the  reaction would take place naturally the enzymes just make it happen quicker?