A level Biology: Post your doubts here!

[{#}324354]

I'm not sure, I just put produce a large quantity of antibodies that are specific to an antigen.

I wrote the same

 

[angryrider_56]

u

It was 3 marks right?
Probably 1 mark, as long as you mentioned water has a high latent heat of vaporisation and another property.

unfortunately i think i haven't understood the question too well...so no i haven't wrote that point but i wrote about osmosis and other stuff to try and increase my chances of meeting valid answers in the MS.

 

[angryrider_56]

I think that you're right.

My answer was that the thing prevented the translation from happening....guys it said it was on the start codon so how can translation happen if the start codon isnt available?

 

[Kanekii]

I'm not sure, I just put produce a large quantity of antibodies that are specific to an antigen.

Oh i just said its longer lasting/life and used for treatment against cancer/tumour

 

[A*****]

My answer was that the thing prevented the translation from happening....guys it said it was on the start codon so how can translation happen if the start codon isnt available?

I wrote that the small molecule had a STOP codon so the polypeptide is not synthesised as the STOP codon is encountered before the START codon...is it right?

 

[A*****]

Oh i just said its longer lasting/life and used for treatment against cancer/tumour

I wrote that it marks the antigen so it is easier for the macrophage to identify and destroy it

 

[angryrider_56]

I wrote that it marks the antigen so it is easier for the macrophage to identify and destroy it

same

 

[fayzaan]

what do u guys think about the threshold?!

 

[fayzaan]

and what was the answer for the question with different pathogenic strains

 

[A*****]

what do u guys think about the threshold?!

Maybe around 40

 

[A*****]

and what was the answer for the question with different pathogenic strains

Which question are u talking about?

 

[fayzaan]

Which question are u talking about?

the one with immunity

 

[A*****]

the one with immunity

We had to mention about specificity of memory B and T cells and about the different shapes of antigens

 

[fayzaan]

i forgot to mention about memory cells but mentioned about the specificity of antibodies to antigens. How much marks will i lose?!

 

[fayzaan]

there was also a question about the features of channel protien
what did u write in the question

 

[A*****]

i forgot to mention about memory cells but mentioned about the specificity of antibodies to antigens. How much marks will i lose?!

1 I think

 

[A*****]

there was also a question about the features of channel protien
what did u write in the question

I wrote about amino acids with hydrophobic R groups facing the hydrophobic fatty acid chains so they can interact for stability and the lining of the inside with hydrophilic R groups to allow the entry and interaction with polar molecules

 

[fayzaan]

it a

I wrote about amino acids with hydrophobic R groups facing the hydrophobic fatty acid chains so they can interact for stability and the lining of the inside with hydrophilic R groups to allow the entry and interaction with polar molecules

lt also mentioned about the total number of polypeptide chain it contains. Is it necessary to tell about quatenary structure

 

[A*****]

it a

lt also mentioned about the total number of polypeptide chain it contains. Is it necessary to tell about quatenary structure

I don't know whether mentioning about the quaternary structure was mandatory or not...but I think that the question was to state and explain so the answer which I told u would be sufficient for 4 marks...what do u say?

 

[fayzaan]

i wrote the same as u but i do not think it is good enough for 4 marks