A level Biology: Post your doubts here!

[Hisham Khan]

Rate of active transport only increase if higher energy is provided in form of atp so more work can be done to move things against concentration gradient and obviously protein carriers for ions

 

[innovative_1]

Intercellularly

Hisham bro how r u??

 

[Hisham Khan]

Hisham bro how r u??

I'm FINEEEEEEE

 

[innovative_1]

Rate of active transport only increase if higher energy is provided in form of atp so more work can be done to move things against concentration gradient and obviously protein carriers for ions

Ur intelligent boy

 

[Hisham Khan]

Ur intelligent boy

No ...... considering I started revising in late march NO

 

[innovative_1]

Intercellularly

May i criticize this statement? R u ready?

 

[Hisham Khan]

May i criticize this statement? R u ready?

NO

 

[innovative_1]

NO

Oh c'mon boi ur such a genius boi i want to extract knowledge from u

 

[innovative_1]

Need helpView attachment 63774 View attachment 63775 View attachment 63776

Hey man how u get enlarged images? I'm new here

 

[A*****]

Oh c'mon boi ur such a genius boi i want to extract knowledge from u

EXTRACT

 

[A*****]

Aren't mitochondria visible through a light microscope? Like it's C here

 

[A*****]

Hey man how u get enlarged images? I'm new here

When u upload a file, there is an option of 'full size'

 

[innovative_1]

Aren't mitochondria visible through a light microscope? Like it's C here

View attachment 63781

Yes C is correct bcoz we have no other option left tho it is visible under microscope like if u see in D RER also present so they can't be seen under microscope at all.

 

[SohaibButt]

How does cholesterol increases fluidity in the cell membrane?

 

[A*****]

How does cholesterol increases fluidity in the cell membrane?

It prevents close packing of fatty acid chains

 

[angryrider_56]

Is the answer B or D? (i dont have the MS for this)

 

[A*****]

View attachment 63783
Is the answer B or D? (i dont have the MS for this)

Most probably D

 

[Kanekii]

View attachment 63783
Is the answer B or D? (i dont have the MS for this)

I think its D since in telophase the two nucleus forms so each nucleus will have 2 DNA and besides in metaphase there is no nucleus to begin with

 

[angryrider_56]

I also chose D but a friend of mine said it is most certainly metaphase because (btw the question said in ONE nucleus) point X is at the very end of the stage which is before Anaphase (where the division actually happens) so point X is at the very end of metaphase. His theory makes sense tbh.
One more question, does anyone know any reliable Classifieds paper source other than save my exams? They have the most unreliable marking schemes ever. Dont waste ur money on it if you have recently found it.

 

[Kanekii]

I also chose D but a friend of mine said it is most certainly metaphase because (btw the question said in ONE nucleus) point X is at the very end of the stage which is before Anaphase (where the division actually happens) so point X is at the very end of metaphase. His theory makes sense tbh.
One more question, does anyone know any reliable Classifieds paper source other than save my exams? They have the most unreliable marking schemes ever. Dont waste ur money on it if you have recently found it.

but doesnt nucleus disappears at prophase and reforms at telophase?
do you know the year this question is from?