BIOLOGY PAPER 22

[shikha95]

I was on a hurry that I made some stupid spelling mistakes :/
For example : I wrote cristea instead of cristae and Glycositic bonds instead of Glycosidic.
Do you guys think that would make me lose a lot of marks ?

Do you think we HAVE to mention glycosedic bond? I just said 1,6 linkage..

 

[Z.S.M]

Do you think we HAVE to mention glycosedic bond? I just said 1,6 linkage..

that works!

 

[Xx_EMINEM_xX]

Do you have to say inhibitor and stuff? they just asked to describe the graph, right?

Yes you should write about inhibitor, as it had many marks and many lines to write in and actually it said Explain not Describe I think

 

[Xx_EMINEM_xX]

Do you think we HAVE to mention glycosedic bond? I just said 1,6 linkage..

In that question you should write, Amylopectin is Branched and have 1-6 Glycosidic bonds, While Amylose is Unbranched and have 1-4 Glycosidic bonds.. You can say that Amylopectin forms Glycogen in Animal cells, while a Mixture of Amylopectin and Amylose forms starch in plant cells ( This is optional, I wrote this just in case and to fill up empty lines of the question).

 

[shikha95]

Yes you should write about inhibitor, as it had many marks and many lines to write in and actually it said Explain not Describe I think

damn..

 

[Xx_EMINEM_xX]

damn..

Don't worry, Let's Hope that the curve is low..

 

[ICTloverz]

Do you have to say inhibitor and stuff? they just asked to describe the graph, right?

Yeah we have to tell about inhibitor..

 

[TCHS]

It

Do you have to say inhibitor and stuff? they just asked to describe the graph, right?

If I remember correctly, it said 'Explain' so you had to write about that stuff

 

[xtremeforums]

I made a stupid mistake! I measured the cell instead of the chlorophyll..

Chloroplast* u mean? not chlorophyll...

 

[xtremeforums]

I
know right? I was like secondary or tertiary...damn I'll write tertiary

It depends on whether u wrote tertiary consumer or tertiary trophic level...
The humpback whale was a secondary consumer, and was at a tertiary trophic level...

 

[xtremeforums]

Do you think we HAVE to mention glycosedic bond? I just said 1,6 linkage..

"linkage" is a very common term... the term "glycosidic" was required...
Check november 2008 paper 2. This was a repeated question. And check the mark scheme for the answer.

 

[xtremeforums]

In that question you should write, Amylopectin is Branched and have 1-6 Glycosidic bonds, While Amylose is Unbranched and have 1-4 Glycosidic bonds.. You can say that Amylopectin forms Glycogen in Animal cells, while a Mixture of Amylopectin and Amylose forms starch in plant cells ( This is optional, I wrote this just in case and to fill up empty lines of the question).

Amylopectin contains 1-6 glycosidic bonds, and 1-4 glycosidic bonds too...

 

[Xx_EMINEM_xX]

Amylopectin contains 1-6 glycosidic bonds, and 1-4 glycosidic bonds too...

I was saying the difference..

 

[Ahmed Hisham]

guys, will I get penalised if I wrote CTC instead of CTT in the HbA and HbS question? I wrote all the necessary info other than the codes such as, single-base-substitution, another triplet, mutation in beta chain and valine instead of glutamate!
Also for question of micrograph I didn't describe or explain the organelles I just wrote them
HELP PLS!!

 

[Xx_EMINEM_xX]

guys, will I get penalised if I wrote CTC instead of CTT in the HbA and HbS question? I wrote all the necessary info other than the codes such as, single-base-substitution, another triplet, mutation in beta chain and valine instead of glutamate!
Also for question of micrograph I didn't describe or explain the organelles I just wrote them
HELP PLS!!

I don't know about alleles but as you wrote other necessary info they will award marks on it, and wrong info will be penalized you might get 2/3
I think the micograph had 3 marks on it, 1 mark on each answer (Organelle + Description), so sorry I think you might get 0/3.. sorry dude just hope for a low curve

 

[xtremeforums]

guys, will I get penalised if I wrote CTC instead of CTT in the HbA and HbS question? I wrote all the necessary info other than the codes such as, single-base-substitution, another triplet, mutation in beta chain and valine instead of glutamate!
Also for question of micrograph I didn't describe or explain the organelles I just wrote them
HELP PLS!!

there is no negative marking, so if u wrote three other correct points.. you would be awarded the 3 marks.. and the wrong point would be ignored.

 

[xtremeforums]

was description required in the micrograph question??

 

[Xx_EMINEM_xX]

was description required in the micrograph question??

Yes, the question was to write Organelles that you can only see by Electronic Microscope and describe their structure, that's why it had two lines for each answer..
such as: Ribosomes, Consists of Two sub-units (large sub unit & Small Sub unit) with a space in between called "Cleft" site of placing mRNA.

 

[TCHS]

My teacher told me the threshold won't be less than 45/60 :/ *gulp*

 

[Xx_EMINEM_xX]

My teacher told me the threshold won't be less than 45/60 :/ *gulp*

It should be less !! all Variant 22 papers were 42-40/60 so this should be in the same range !