Physics, Chemistry and Biology: Post your doubts here!

[The kim]

Guys! What if i ruined my bio p12 like 25/40 and did great in my p32 and 62 50/80 and 30/40. Will my p12 affect my grade from A or B to C or D? Do they add up the total mark to determine our grade?

 

[XxChampXx]

Guys! What if i ruined my bio p12 like 25/40 and did great in my p32 and 62 50/80 and 30/40. Will my p12 affect my grade from A or B to C or D? Do they add up the total mark to determine our grade?

For Oct Nov 2014 grade thresholds for variant 2(12,32,62) around 77.5%(124/160) is A* and 67.5%(108/160) is A. According to the May June 2014 grade thresholds for variant 2(12,32,62) around 72.5%(116/160) is an A* and 64%(102-103/160) is an A.

 

[The kim]

For Oct Nov 2014 grade thresholds for variant 2(12,32,62) around 77.5%(124/160) is A* and 67.5%(108/160) is A. According to the May June 2014 grade thresholds for variant 2(12,32,62) around 72.5%(116/160) is an A* and 64%(102-103/160) is an A.

That means they won't determine the marks by each paper and give the lowest grade among the 3 papers right?

 

[Abdurrahmanmuhammed]

yes

Guys for bio 2015 mcq, is carbon excreted in the faeces?

yes theres fibre present and cellulose present in fibre so carbon is present !

 

[XxChampXx]

That means they won't determine the marks by each paper and give the lowest grade among the 3 papers right?

i dont't think they do that but for the percentage it is 30% of paper 1, 50% of paper 3 and 20% of paper 6. S0, there formula for your percentage is:-
(paper 1 marks/40 * 30)+(paper 3 marks/80 * 50)+(paper 6 marks/30*20)
compare this value you get with the percentages of the grade thresholds

 

[XxChampXx]

yes

yes theres fibre present and cellulose present in fibre so carbon is present !

What did you write for:-
1) The question where they asked if height was continues and/or discontinues
2) And was the heat and light energy from sun cyclical or non-cyclical?

 

[Abdurrahmanmuhammed]

What did you write for:-
1) The question where they asked if height was continues and/or discontinues
2) And was the heat and light energy from sun cyclical or non-cyclical?

continuous only
i dont remember what i put for it ,i got all fked up when shading i missed 1 or 2 but the answer is non cyclical

 

[Abdurrahmanmuhammed]

That means they won't determine the marks by each paper and give the lowest grade among the 3 papers right?

for us it might be like oct/nov 14 cause the papers were quite easy~

 

[XxChampXx]

continuous only
i dont remember what i put for it ,i got all fked up when shading i missed 1 or 2 but the answer is non cyclical

Why is it non-cyclical?

 

[Abdurrahmanmuhammed]

when the heat and light reach plants for photosynthesis do they flow again to some place from the plants ? no right

 

[The kim]

i dont't think they do that but for the percentage it is 30% of paper 1, 50% of paper 3 and 20% of paper 6. S0, there formula for your percentage is:-
(paper 1 marks/40 * 30)+(paper 3 marks/80 * 50)+(paper 6 marks/30*20)
compare this value you get with the percentages of the grade thresholds

Then what are those 'minimum mark required for grade a' in each component for? That means we only follow the 'combination of component' grade shown at the grading table?

 

[Sariya Khan]

Why is it non-cyclical?

Energy does not get back to Sun or to the producers as it gets lost at each trophic level.

 

[XxChampXx]

Then what are those 'minimum mark required for grade a' in each component for? That means we only follow the 'combination of component' grade shown at the grading table?

I am not so sure about the minimum marks table.

 

[skyangel]

Guyzz how to finish exam fast as I have phy on wed and paper 3 only have 1hr 15 min so I want to finish it fast as yesterday wazz my bio and I dixnt finish on time

 

[My Name]

Guyzz how to finish exam fast as I have phy on wed and paper 3 only have 1hr 15 min so I want to finish it fast as yesterday wazz my bio and I dixnt finish on time

One thing that might help you is that if you can't answer a question, move on to the next so that you answer the ones you are sure of and then make sure you get back to the parts you left.

 

[masterex567]

Then what are those 'minimum mark required for grade a' in each component for? That means we only follow the 'combination of component' grade shown at the grading table?

That just shows how they calculate the grade thresholds. They get those minimum marks for each component, then put it in it's weighting. For example, the multiple choice makes 30% of the final grade, like that. They do that for all three components the candidate is sitting it for, and get the final threshold for an A. Then slightly adjust it to difficulty of paper.
We only need to follow the combination of components. not that

 

[amal sharkawi]

why the refraction is down ???

 

[killa125]

What did you guys write for the part that produces proteins and the part that controls the function of the cell?

 

[Saad the Paki]

Can someone help me draw the graph in (b)(ii)
And please exaplin it too.!

 

[ThePacifics]

What did you guys write for the part that produces proteins and the part that controls the function of the cell?

Mitochondria.