BIOLOGY PRACTICAL P34???? 26TH MAY

[hassannouman]

I don't think there will be ecf. Kind of worried bc it was for a lot of marks and half of the students selected t because of the thickness of the walls and half q.mso its conflicted

I think examiner will consider ecf

 

[KatnissEver]

So do you think it's q and t or only q

 

[Abdul Hanan]

For significant error of counting the no. of bubbles , I wrote about the difficulty in counting no. of bubbles because you had to count the bubbles and watch stopwatch at same time (I saw this answer somewhere in mark scheme for some error question) I also wrote about shaking delivery tube , I had less time and didn't perform the last experiment of inverted syringe so I wrote parallax error quickly (in measuring the displacement of water)
what you wrote to standardise dependent variable? and last part of Q.1 (perhaps for measuring independent variable)?

i wrote about the difficulty in counting point as well....
the variable we had to standardize was the concentration of X so it no longer effects the results and now another variable (next question e.g temp.) would effect the enzyme rate

 

[Abdul Hanan]

So do you think it's q and t or only q

did you saw the pictures i attached previously in this thread?
after you see them its clear that T was the correct option. But maybe, there is a chance that both can be right.
the point is that we are only going to loose 1 mark for choosing the wrong one... and then ecf for making the plan diagram correctly.

 

[hassannouman]

i wrote about the difficulty in counting point as well....
the variable we had to standardize was the concentration of X so it no longer effects the results and now another variable (next question e.g temp.) would effect the enzyme rate

Don't remember if I wrote about concentration of X or not but wrote about volume. You are right, I did question 2 first and then didn't get enough time at the end as Q.1 was lengthy and time consuming

 

[Abdul Hanan]

Don't remember if I wrote about concentration of X or not but wrote about volume. You are right, I did question 2 first and then didn't get enough time at the end as Q.1 was lengthy and time consuming

i think yes question one was too long.... i did question 1 first, then completed the 2nd in around 40 minutes and gave 20 minutes to question one again for its last parts.

 

[hassannouman]

We discussed almost the whole paper, in graph, estimate thickness was 36.00 , length of neck (x- axis) and thickness of wall (y- axis)

i think yes question one was too long.... i did question 1 first, then completed the 2nd in around 40 minutes and gave 20 minutes to question one again for its last parts.

do you have chemistry 34?

 

[Abdul Hanan]

We discussed almost the whole paper, in graph, estimate thickness was 36.00 , length of neck (x- axis) and thickness of wall (y- axis)

do you have chemistry 34?

yes same.
yes i am going to give chem/phy 34 as well.

 

[Sifat Bin Quadery]

yes same.
yes i am going to give chem/phy 34 as well.

Mine was 35.80.....
How much do u guys expect to get??

 

[Abdul Hanan]

Mine was 35.80.....
How much do u guys expect to get??

i expect 33+ inshallah
that 35.80 value is absolutely fine if that's what you got from your graph.

 

[KatnissEver]

What's the usual threshold for bio practicals

 

[Sifat Bin Quadery]

What's the usual threshold for bio practicals

it is usually 22-23..... the max i saw was 27..... Most ppl screw up the practical....

 

[Sifat Bin Quadery]

i expect 33+ inshallah
that 35.80 value is absolutely fine if that's what you got from your graph.

well... i got something very close to 36.... but not exactly 36...as it was an estimate question i went for 35.80...
how was ur bio P1 and P2??

 

[Abdul Hanan]

well... i got something very close to 36.... but not exactly 36...as it was an estimate question i went for 35.80...
how was ur bio P1 and P2??

Bio P1 and P2 alhamdullilah good. Only paper that went wrong for me was chemistry P2.
what about you how did your papers go up till now?

 

[Sifat Bin Quadery]

Alhamdulillah..... the papers were good..... made a few silly mistakes in the physics P2....and screwed up Bio practicals..... still hoping o get something around 30....

 

[hassannouman]

What's the usual threshold for bio practicals

24-26 for A, this practical might have low gt

 

[Sifat Bin Quadery]

24-26 for A, this practical might have low gt

Yes... i think so.... many people randomly wrote down number of bubbles of oxygen without completing the experiment properly... for that i guess there will be a range in the mark scheme that will be set by the examiner.... as a result many people who randomly wrote down the numbers will lose marks and hence the GT is expected to be low.....

 

[Sifat Bin Quadery]

Did u guys underline the headings?? and wat were the headings that you gave?

 

[Abdul Hanan]

Did u guys underline the headings?? and wat were the headings that you gave?

concentration of X
Bubbles

 

[hassannouman]

concentration of X
Bubbles

You wrote only 2 headings? what about the volume of water (added in X) ?