Physics, Chemistry and Biology: Post your doubts here!

[Ayesha Asif333]

Yeah Inshallah, All our hardwork will pay off at the end.
BTW ,Did you both get your login details yet?

No,not yet ....I'll ask miss tomorrow
And omg when r the results coming

 

[Ayesha Asif333]

Started writing second E-book. Make sure to check both of them out guys!
Imposter- https://www.wattpad.com/story/97774732-imposter✔ 27th August- https://www.wattpad.com/story/104154724-27th-august

Sure will... let's see how good can u write
I've got whole list of books ....u just added to them

 

[Adeen Atif]

when r the results coming

On 10th August. Im kinda excited though

 

[Adeen Atif]

Sure will... let's see how good can u write

Well..I hope u like them. Im only 14 ok so keep that in mind while reading the books and expect the english grammar of 14 year old

I've got whole list of books ....u just added to them

Thanks! and That means you have wattpad account right?

 

[Ayesha Asif333]

On 10th August. Im kinda excited though

Yea me too

 

[Ayesha Asif333]

Well..I hope u like them. Im only 14 ok so keep that in mind while reading the books and expect the english grammar of 14 year old

Thanks! and That means you have wattpad account right?

I read the first chp of imposter and yes its nice, and grammar's also good...keep up the good work!

My pleasure....that means i've got loads of books in the shelf and on the ebook reader
I had an wattpad but now its been long since ive logged in so forget the password and even the user name

 

[Adeen Atif]

Well..I hope u like them. Im only 14 ok so keep that in mind while reading the books and expect the english grammar of 14 year old

That means you have wattpad account right?

I read the first chp of imposter and yes its nice, and grammar's also good...keep up the good work!

My pleasure....that means i've got loads of books in the shelf and on the ebook reader
I had an wattpad but now its been long since ive logged in so forget the password and even the user name

Oh ok

 

[studyingrobot457]

biology doubt

0610_w12_qp_33

In question two part b I guess, there is the question says use letter to represent area in which process occur, so the last one was like unfiltered blood pass to renal vein, and the answer was D this made me wonder is all blood filtered when it pass to kidney or not?

 

[Ayesha Asif333]

I've heard that a healthy kidney is highly efficient in its filtration function
Well, all blood at the end ...filtered or unfiltered returns to the renal vein
Now God knows why they wrote unfiltered blood specifically ...makes little sense*sigh*

 

[princess of cricket]

Can anyone explain me the term water potential

 

[Emmris]

Water potential is the tendency of water 2 move by osmosis . For e.g, in osmosis , water moves from a high water potential 2 a low water potential. It means dat water moves from a region where there is more water 2 a region of less water through a semi permeable membrane

 

[Ayesha Asif333]

Its the ability of of a cell to draw in water.pure water has a water potential of 0 as solutes are added to the water its water potential falls..becomes negative and when two areas of different water potential are separated by a semi permeable membrane water moves from the less negative area to the more negative area so we say that water moves from an area of hwp to an area of lwp
This process cam be observed when you place RBC in a salt solution or clearly when you sprinkle salt on slugs, so as to kill them....
Best defined as:- it is the tendency for water to move out of the solution; the mire water in the solution, the greater its water potential!

 

[princess of cricket]

so in easy words ' water potential tells the concentration of water'
is that ?

 

[princess of cricket]

in islamiat syllabus its written that candidates should study the direct line recognised among Shi‘a Muslims as Imams
do we have to only learn their names or also something about them
plus which book are u guys using
and plz tell what type of questions are asked for this topic & how many of u will be appearing for islamiat paper

 

[Emmris]

so in easy words ' water potential tells the concentration of water'
is that ?

Ya ..... kind of..... but we don't usually say dat the water is concentrated. So the term concentration won't fit in here.

If in a question it's written dat there is a dilute solution ( has more water molecules ) n a concentrated solution ( less water molecules ), then u will have 2 understand dat the dilute solution has a high water potential n the concentrated solution has a low water potential.

 

[princess of cricket]

Ya ..... kind of..... but we don't usually say dat the water is concentrated. So the term concentration won't fit in here.

If in a question it's written dat there is a dilute solution ( has more water molecules ) n a concentrated solution ( less water molecules ), then u will have 2 understand dat the dilute solution has a high water potential n the concentrated solution has a low water potential.

thanx alot

 

[Ayesha Asif333]

in islamiat syllabus its written that candidates should study the direct line recognised among Shi‘a Muslims as Imams
do we have to only learn their names or also something about them
plus which book are u guys using
and plz tell what type of questions are asked for this topic & how many of u will be appearing for islamiat paper

I was told that this topic isn't important, so i only learned a few names and even if a ques related to this comes there will be an option
Since not any one book is perfect we study from more than one...depends from which one can you understand better
Islamiyat by farkanda noor and another oxford book written by David thomas and Mustafa
Then we have islam in the modern perspective by Ayesha Tariq
You should refer to all three of of them
For the imams topic i've never come across any ques but if you have learned well then u should be able to ans all types of ques

 

[Ayesha Asif333]

Ok so why does a solution having high concentration of of water said to have a higher water potential?

 

[Laura Kate]

any of guys have the textbook pdf version of
Essential Biology for Cambridge IGCSE®-ISBN: 978-0-19-839920-9
Essential Chemistry for Cambridge IGCSE ISBN: 978-0-19-835518-2
Essential Physics for Cambridge IGCSE ISBN: 978-0-19-841770-5

 

[Laura Kate]

any of guys have the textbook pdf version of
Essential Biology for Cambridge IGCSE®-ISBN: 978-0-19-839920-9
Essential Chemistry for Cambridge IGCSE ISBN: 978-0-19-835518-2
Essential Physics for Cambridge IGCSE ISBN: 978-0-19-841770-5