Biology Practical Worried!

[Oliveme]

I wrote variant 32 the time taken to reach teh end point in my case DECREASED as the % of enzyme decreased! Did this happen to any of you? I'm desperate!!!!!!!!!!!!!!!!!

I think the time is supposed to increase as the enzyme conc decreases.
what concentrations of the enzyme solution did people make from the serial dilutions?

 

[00tanveer]

I think it's the inner membrane of the epithelium too. It's a repeat question from some past year - I can't remember...

 

[00tanveer]

What was the graph about again in question 1??? I forgot!! Does anyone remember?

 

[Innocent atranger]

The diagram of the alveoli was supposed to be a plan diagram or a diagram at higher magnification ?

 

[Melancholy]

I think the time is supposed to increase as the enzyme conc decreases.
what concentrations of the enzyme solution did people make from the serial dilutions?

I totally agree with you!!!!!!!! The time would INCREASE, because you have less enzyme... However I rpeated the results and I always got the same result.. My serial dilution was 1%, 0,1%; 0,01%; 0,001% and 0,0001%

 

[Eduarda]

I totally agree with you!!!!!!!! The time would INCREASE, because you have less enzyme... However I rpeated the results and I always got the same result.. My serial dilution was 1%, 0,1%; 0,01%; 0,001% and 0,0001%

It happened the exact same thing with me, but I used different concentrations. I also believe that the time should have increased, but it didn't...

 

[Saad (سعد)]

Yeah, mine were like that too. i got a little skeptic because i thought arteries were supposed to be nearly circular.

As for the alveoli, you had to show the nucleus and the cells. the membrane was the inner line of the alveoli.

I showed the nucleus and the cells... but I labelled the outer lining. Oh well, Al-Hamdulillah, at least I get 3 marks out of it.

Expecting 36/40...

 

[littlecloud11]

I showed the nucleus and the cells... but I labelled the outer lining. Oh well, Al-Hamdulillah, at least I get 3 marks out of it.

Expecting 36/40...

3? the question was out of five. At most you'll only lose a mark.

I'm hoping for the same. InshAllah.