BIOLOGY PAPER 22

[ICTloverz]

for once
BAD

Bad for you??>. I don't think so..

 

[rizwaan]

For the first question second part what was that you could see with electron microscope?

 

[rizwaan]

i did that too and got 12000
but during the last 30 seconds, when i was reviewing the paper, i stared at the word 'choloroplast' and in the last 15 seconds i corrected my answer to 1600.

do we get mrks on writing formula for magnification?

 

[Z.S.M]

do we get mrks on writing formula for magnification?

yeah! they did say
'show your working'

 

[rizwaan]

yeah! they did say
'show your working'

For the first question second part what was that you could see with electron microscope?

 

[Z.S.M]

For the first question second part what was that you could see with electron microscope?

ER, lipid bilayer, ribosomes.

 

[yazan1995]

ER, lipid bilayer, ribosomes.

i wrote ribosomes,centrioles and cell surface membrane

 

[Z.S.M]

i wrote ribosomes,centrioles and cell surface membrane

i believe there are no centrioles in PLANT cells.

 

[yazan1995]

i believe there are no centrioles in PLANT cells.

oh shit ! careless mistake!

 

[ICTloverz]

Exactly their are no ceentrioles..

 

[Z.S.M]

oh shit ! careless mistake!

i was about to write that myself.
But i jerk-stopped.

 

[yazan1995]

i believe there are no centrioles in PLANT cells.

what did you write about the HBA and HBS?

 

[insomniac]

im so tensed about p4 now mj2012 p4 was so horrible if we get something like that i cnt even thing of getting a good grade then

 

[Z.S.M]

what did you write about the HBA and HBS?

That valine replaces glutamic acid in haemoglobin due to mutation in triplet code, making it insoluble.

 

[Z.S.M]

im so tensed about p4 now mj2012 p4 was so horrible if we get something like that i cnt even thing of getting a good grade then

Relax.
If you worry about it, you won't be able to give your best shot.
And my teacher says, "If you worry about a problem, then you have two worries.
1) the problem at hand
2) your wrecked nerves
It's better to keep your cool and deal with just one thing"

 

[yazan1995]

That valine replaces glutamic acid in haemoglobin due to mutation in triplet code, making it insoluble.

ROLE OF WATER IN THE FIG. OR SOMETHING LIKE THAT?

 

[insomniac]

base sequence ctt is substituted by cat : mutation in the beta chain : making mutated beta chain less soluble

 

[insomniac]

Relax.
If you worry about it, you won't be able to give your best shot.
And my teacher says, "If you worry about a problem, then you have two worries.
1) the problem at hand
2) your wrecked nerves
It's better to keep your cool and deal with just one thing"

yeah i knw that but there is no way out

 

[insomniac]

t

ROLE OF WATER IN THE FIG. OR SOMETHING LIKE THAT?

thermal properties of water , density

 

[Z.S.M]

ROLE OF WATER IN THE FIG. OR SOMETHING LIKE THAT?

Stable environment cz of high heat capacity.
Density of ice is low so floats and insulates water from cold outside, again stable environment.
Supplies dissolved nutrients an oxygen.