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Eduqas Biology A Level 2019 Paper 1,2,3 2019 Exam discussion

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I did this right at the end but I think I spoke about
1) high levels of Na+ concentration
2) waterlogged soils which lead to anaerobic conditions
3) dont remember lmao

Original post by mnnbv

yep

what did u write for the 6 marker on abiotic factors making marshland a harsh environment?

Reply 61

mnnbv

Original post by 007Ruby007

I did this right at the end but I think I spoke about
1) high levels of Na+ concentration
2) waterlogged soils which lead to anaerobic conditions
3) dont remember lmao

ah okay! thanks
we wrote the same thing for one of them at least :smile:

Reply 62

Bandobaby69

That exam was hard???

Reply 63

tomjd2000

I’m pretty sure you have to multiply by the percentage then add it to the original number, then divide by 2. If it was 100% increase the population would double, but by that method it wouldn’t change

Original post by mnnbv

multiply the the number of red kites by the percentage they gave, then divide by 100 to get total number of red kites. divide this by two to get the breading pairs

I wonder if the grade boundaries will be higher
because most people found it easier to last years papers I think

(edited 4 years ago)

Reply 64

mnnbv

Original post by tomjd2000

I’m pretty sure you have to multiply by the percentage then add it to the original percentage, then divide by 2

if I remember correctly, it didn't say the population INCREASED by xxx%

I thought it said the population was xxx% of the original population

However, I may have read it wrong?
can anyone clarify what i said?

Reply 65

honestlykms

It increased by xxx%

Original post by mnnbv

Reply 66

mnnbv

Original post by honestlykms

It increased by xxx%

welp... I got that wrong then :smile:

erugh... I'm just gonna try and forget about biology at this point

(edited 4 years ago)

Reply 67

tomjd2000

I can’t remember now either

Reply 68

Bandobaby69

Wasn’t it sere ??? It was asking about what species dominate ffs

Reply 69

kekedoyouloveme?

Original post by Bandobaby69

Wasn’t it sere ??? It was asking about what species dominate ffs

sere is a stage of sucession right?

what did you get for the D value= i got 0. something

Reply 70

BiologyBoy2019

I did 1.1 cm to mm which is 1.1*10 so 110 mm. Then 110mm into um is 110*100 so 11000um I think I ****ed it haha

Original post by 007Ruby007

I got 11 um

(edited 4 years ago)

Reply 71

Skyward_Bound

Original post by mnnbv

welp... I got that wrong then :smile:

erugh... I'm just gonna try and forget about biology at this point

I thought it was "the population is now xxx% of the original population" too. I didn't think you had to add it on to the original.

(edited 4 years ago)

Reply 72

Soleman123

I wrote about the ice lowering temperature which reduces kinetic energy and the action of enzymes within the mitochondria is slowed down and then the isotonic buffer was to prevent any changes in pH that could denature enzymes and it's isotonic so water does not cause lysis of the mitochondria

Original post by kekedoyouloveme?

what did you get for the isotonic buffer

i said something ice cold inactivating protein carriers, in mitochondria, no atp

and isotonic buffer to maintain H+ to maintain electrochemical gradient for etc? i did not know anythingggg

Reply 73

Soleman123

I got 1.1um

Original post by BiologyBoy2019

I did 1.1 cm to mm which is 1.1*100 so 110 mm. Then 110mm into um is 110*100 so 11000um I think I ****ed it haha

(edited 4 years ago)

Reply 74

Soleman123

I got 0.27 but I just remembered I don't think I wrote it in the answer box

Original post by kekedoyouloveme?

sere is a stage of sucession right?

what did you get for the D value= i got 0. something

Reply 75

Bandobaby69

It can’t be bc u had to find the time differences between 3 and 4 of whatever the y axis was
I remember doing 31-26 or some bs like that

And sere is when a particular community dominates a stage of succession

I put
Primary succession
Pioneer
And we’re

Original post by kekedoyouloveme?

sere is a stage of sucession right?

what did you get for the D value= i got 0. something

Reply 76

mnnbv

Original post by Skyward_Bound

I thought it was "the population is now xxx% of the original population" too. I didn't think you had to add it on to the original.

okay! honestly, I do think I did it right...
tsr is both useful and demotivating at the same time

Reply 77

Soleman123

Isn't that the climax species or climax community. Sere is a series of communities with different species

Original post by Bandobaby69

Wasn’t it sere ??? It was asking about what species dominate ffs

Reply 78

kekedoyouloveme?

Original post by Skyward_Bound

I thought it was "the population is now xxx% of the original population" too. I didn't think you had to add it on to the original.

i didnt add it and now im stressing coz thats like 30 flipping something marks

ugghhhhh i really thought oh i lost 30 marks all good

checking everybodies ansswers its now dropped to 38 im acc so dumb

(edited 4 years ago)

Reply 79

kekedoyouloveme?

Original post by Soleman123

I got 0.27 but I just remembered I don't think I wrote it in the answer box

oh shoot i got 0.83

you calculated the gradient right?

yano the blue and red lines, i just drew them exactly at 4 and 3 on the graph below

and thats what i did ;/