No idea - I think these are valid points:

As you increase the radius of the disc, then the surface area that the antibiotics on increases which has a greater effect of decreasing the bacteria growth.

C was the same as the water, which means that the antibiotics had little effect (apparently it could've been contaminated).

Quoting the data will get you marks to support your argument

Draw a possible graph of an exponential curve showing how as you increase the surface area, the bacteria clears faster

Conclude with your opinion on what conclusions you can make

Reply 44

Salvus

Did it today, found it strangely easy? :confused:

(edited 9 years ago)

Reply 45

shivani210598

7

waaiiit.... when did it talk about the radius increasing of the discs???

Reply 46

Salvus

Original post by shivani210598

waaiiit.... when did it talk about the radius increasing of the discs???

It didn't your getting confused with the bacteria dying. When the bacteria dies the agar jelly goes clear as there is no bacteria, the greater the radius of the clear circle the more effective the antibiotic was. The paper circle stays the same size!

Reply 47

shivani210598

7

Original post by Salvus

It didn't your getting confused with the bacteria dying. When the bacteria dies the agar jelly goes clear as there is no bacteria, the greater the radius of the clear circle the more effective the antibiotic was. The paper circle stays the same size!

ok so did you put antibiotic B as most effective?

Reply 48

Salvus

Original post by shivani210598

ok so did you put antibiotic B as most effective?

Yeah thats correct and thats easily one mark just for stating that heh. You just had to write things like C did nothing as it is the same as water and as you all know water isnt an antibiotic. You had to compare the results to one and other etc all that jazz they tell you.

Reply 49

ToLiveInADream

17

Unlike geography, this was an amazing exam. Hope everyone did well (but nationally low so grade boundaries are low too haha).

Posted from TSR Mobile

Reply 50

shivani210598

7

Original post by Salvus

Yeah thats correct and thats easily one mark just for stating that heh. You just had to write things like C did nothing as it is the same as water and as you all know water isnt an antibiotic. You had to compare the results to one and other etc all that jazz they tell you.

Thank you so much! xx

Reply 51

Salvus

Original post by shivani210598

Thank you so much! xx

Not a problem!

ToLiveInADream, I agree the Geography paper's questions today were so vauge?!

Reply 52

Exima

What was the advantages of using fetal cells and advantages of using cells from the mother's blood? :frown:

Reply 53

Salvus

Original post by Exima

What was the advantages of using fetal cells and advantages of using cells from the mother's blood? :frown:

Fetal cells from the mothers blood means there is no direct risk of infection to the Fetus.

The advantages on Fetal cells (not sure if Im right on this half): They scientists know its a fetal cell and dont have to spend time finding the cell in the blood? heh

Reply 54

Exima

Original post by Salvus

Fetal cells from the mothers blood means there is no direct risk of infection to the Fetus.

The advantages on Fetal cells (not sure if Im right on this half): They scientists know its a fetal cell and dont have to spend time finding the cell in the blood? heh

I thought an advantage was that there wasn't a chance for a miscarriage? And fetal cells are advantageous because they are quite reliable as there's only 0.5 - 1% of a miscarriage.

Reply 55

Salvus

"No chance of miscarriage" is probably accepted too!

Reply 56

Exima

What was the actual question - something like "make a conclusion" for the 2nd six marker for antibiotics???

Reply 57

Caitlin7298

did everyone find the exam easy? do you think the grade boundaries will be high?

Reply 58

Sulfur

Original post by Exima

I thought an advantage was that there wasn't a chance for a miscarriage? And fetal cells are advantageous because they are quite reliable as there's only 0.5 - 1% of a miscarriage.