BIOLOGY AS LEVEL---doubts

[unknown 101]

Nashhhh
it told you its double strand with 120 nucleotides ya3ni 60 in each. and mRNA is copied of one only. which means itself kaman its 60.

and when tRNA comes, its uses each three for one amino acid ya3ni total 60/3=20 amino acids in one polypeptide

now i get it, bas when did u ever tell me that??

[[Spy]]

hahaha i didnt say i told you that, i said IT told you that. a7wal

[unknown 101]

hahaha i didnt say i told you that, i said IT told you that. a7wal

hahaha, i need to start sleepin more!!

[[Spy]]

exactly

wala nov 09 variant 2, question 15 its supposed to be B why is it A -.-

[unknown 101]

exactly

wala nov 09 variant 2, question 15 its supposed to be B why is it A -.-

for the fist part its talkin about difference in cells at X in solution Y compared to the same cells in
solution W cell  which is in Y is not coiled so that means that its less negative ( 3ashan there are not alot of solutes dissolved in Cell X, we kaman 3ashan if it was more negative in Y, cell X would coil up like in solution W)
second part: solution Y is less negative 3ashan it does not have alot of solutes dissolved in it unlike solution W ( which caused cell X to coil)

if u didnt understand tell me and i will give u a different example, ok ?

[[Spy]]

ana fahem 2awal part. bas eno if water has been diffused into the leaf, then the water potential has to drop in the solution which means now it should have less water ya3ni more negative?

[unknown 101]

ana fahem 2awal part. bas eno if water has been diffused into the leaf, then the water potential has to drop in the solution which means now it should have less water ya3ni more negative?

ok look if u read the question carefully it tells u that u put cell X in solution W FIRST then moved the cell after it coiled into solution Y so difference in cells at X in solution Y compared to the same cells insolution W is less negative ( u know this part), the second part asks u the difference in solution Y
compared to solution W ( y3ni wat caused the cell to coil in solution W and uncoil in solution Y )
so that means that the water potential in W is more negative causing water to diffuse out the cell, while in solution Y water potential was LESS NEGATIVE as compared to the inside of the cell so water moved in!!

do u get it now??

[[Spy]]

ohhhhhhhhhhh
so its asking the potential of the solutions BEFORE the actual diffusion occurs hahaha i thought eno what is the potential after water diffuses into the cells

bas thanks bro <3

[unknown 101]

ohhhhhhhhhhh
so its asking the potential of the solutions BEFORE the actual diffusion occurs hahaha i thought eno what is the potential after water diffuses into the cells

bas thanks bro <3

hahaha when i fist read it i also could confused by that part, but then i got it

anytime 7bb <3