enzyme experiment (8 marks) (1 Viewer)

[thaoroxy2001]

It's good to know that I ain't the only one who forgot the control!!!

people who thought of balloons ------> clever

I did observation and calculating the time interval between the gas released to when the gas release stops (if you know what I mean)

i'll probably get 5-6 marks for that question

 

[Misturi]

I did the pH, l did no ph, 4ml hcl, 2ml hcl, 4ml naoh, 2ml naoh with milk that was heated and the bactierium in each test tube.

hard to explain..l hpoe the examiners understand!

 

[slinky]

i just wrote 'measure the amount of gas that was released', i hope thats enough, because everything seems to be correct after reading the other post.

 

[imperfek_anjel]

hmmmph, well i specifically identified my substrate which im not sure if we're sposed to...cos we did the experiement in class n to test the optimum temperature of renin (enzyme) on milk....so i basically replicated that n had 3 beakers at 3 diff. temps n 3 test tubes in each, one for each enzyme n one as control...n u time how long it takes for the milk to curdle....did ne1 else try this way??? cos it dusnt seem like it =/

 

[Misturi]

I don't think the enzyme was rennin, the enzyme was the bacteria wasn't it?

 

[tranquilized]

You whack one drop of detergent in the test tube and when the gas is produced it bubles and forms a froth. To measure amount of gas produced you measure height of froth. Just thought i might tell you since no one seemed to know how to do that.

 

[queenie]

apparently;
- max marks you could get if u didnt include a correct hypothesis (which means not an aim) is 3 marks.
- one mark for correctly examining and following through the experiement according to your hypothesis.
- one mark for repeating
- one mark for having a range of temps or ph conditions
- one mark for some sort of control (?)
- one mark for a safety assessment (who the hell would think of doing this??)
- and i couldnt give a crap wat the other marks are for.

 

[Adamb1]

Misturi the enzyme isnt the bacteria thats rediculous the enzyme is in the bacteria and to everyone who measured the gas; did anyone think that it may be easier to simply measure the mass lost in the test tube effectively measuring the substrate change instead.

 

[Misturi]

Adam - thanks for clearing that up for me. So we didn't need rennin in the experiment?