biology paper 1 doubts

[Jevin Sanoo]

What was the answer to qs 34? was it 325?

I got 325 too! What was your answer for the question which asked why the pressure increased in the feet? I don't remember the question well.

 

[Alice123]

i gave B tooo....

Yipeee n the one ' which bonds are effected on the beta-chain of haemoglobin'???[/quote]
i was confused abt dat... was it primary, secondary n tertiary??

 

[Jevin Sanoo]

which was 34???? the heart failure one???? i wrote 'D' ........

My answer was A i think. I chose option 3 and 4.

 

[ijjukittu]

I got 325 too! What was your answer for the question which asked why the pressure increased in the feet? I don't remember the question well.

That was a past paper question! And the answer was B.....

 

[ijjukittu]

My answer was A i think. I chose option 3 and 4.

I wrote 1, 3 & 4....even i searched on the net! it has mentioned 'high blood pressure' as a risk factor for heart failure..........Dont know! What might the answer be in the marking scheme :/

 

[Jevin Sanoo]

yeah !!! exactly!!! this one!!!!! i did B...'reads in one direction' n u????

i gave B tooo....[/quote]
Wasn't it A? Answer A was a base triplet codes for more than one amino acid i think. That's what it was showing.

 

[Jevin Sanoo]

I wrote 1, 3 & 4....even i searched on the net! it has mentioned 'high blood pressure' as a risk factor for heart failure..........Dont know! What might the answer be in the marking scheme :/

It was really confusing. All of the options seemed correct to me.

 

[ijjukittu]

Yipeee n the one ' which bonds are effected on the beta-chain of haemoglobin'???

i was confused abt dat... was it primary, secondary n tertiary??[/quote]
Hey i wrote this toooooooo 'C'

 

[Alice123]

That was a past paper question! And the answer was B.....

which year?

 

[ijjukittu]

It was really confusing. All of the options seemed correct to me.

Exactly! i took more than 15 minutes on this :/

 

[ijjukittu]

which year?

may/june 2005..question no. 28

 

[Jevin Sanoo]

That was a past paper question! And the answer was B.....

I chose B but then i corrected it to D I thought it was because the valves allowed the flow of blood to the feet.

 

[ijjukittu]

I chose B but then i corrected it to D I thought it was because the valves allowed the flow of blood to the feet.

Doesn't matter........U'll still get an A Good luck

 

[Jevin Sanoo]

i was confused abt dat... was it primary, secondary n tertiary??

Hey i wrote this toooooooo 'C' [/quote]
Wasn't it only primary? 'Cause if it would affect other bonds wouldn't there be quaternary too?

 

[Jevin Sanoo]

Doesn't matter........U'll still get an A Good luck

lol Hope so! gl to u too

 

[ijjukittu]

Hey i wrote this toooooooo 'C'

Wasn't it only primary? 'Cause if it would affect other bonds wouldn't there be quaternary too?[/quote]
Many of my friends did 'primary only' but they themselves said that i guess its wrong! Because in sickle-cell anaemia ..gulatimic acids replaces valine! making it less soluble! so this would ultimately effect the tertiary bonds too

 

[Jevin Sanoo]

Wasn't it only primary? 'Cause if it would affect other bonds wouldn't there be quaternary too?

Many of my friends did 'primary only' but they themselves said that i guess its wrong! Because in sickle-cell anaemia ..gulatimic acids replaces valine! making it less soluble! so this would ultimately effect the tertiary bonds too [/quote]
Then what about the quaternary bonds? Wouldn't they be affected too?

 

[ijjukittu]

Many of my friends did 'primary only' but they themselves said that i guess its wrong! Because in sickle-cell anaemia ..gulatimic acids replaces valine! making it less soluble! so this would ultimately effect the tertiary bonds too

Then what about the quaternary bonds? Wouldn't they be affected too?[/quote]
I guess solubility only effects tertiary bonds!!!! just like in the case of enzymes ..as they are soluble too n have tertiary bonds in them..'not quartenary'

 

[Alice123]

w

It was really confusing. All of the options seemed correct to me.

what was option 2 by da way?

 

[Jevin Sanoo]

Then what about the quaternary bonds? Wouldn't they be affected too?

I guess solubility only effects tertiary bonds!!!! just like in the case of enzymes ..as they are soluble too n have tertiary bonds in them..'not quartenary' [/quote]
Gosh! I hope i get at least 30.