A level Biology: Post your doubts here!

[♣♠ Magnanimous ♣♠]

Thanks alot

no problem

 

[VelaneDeBeaute]

View attachment 41300 View attachment 41301

You have to calculate the magnification using the scale given here.

 

[Exo_luhan]

Why do phagocytes have lobed nucleus?

 

[Mohammed salik]

Why do phagocytes have lobed nucleus?

Without a lobed-shaped nucleus, it will be more difficult for them for them to 'curl' or curve round the bacteria before ingesting it, without affecting the nucleus. (Imagine having a centralized nucleus).
Only the cytoplasm changes shape to envelope or engulf the bacteria. This is the advantage of having a lobed-shaped nucleus in phagocytes.Hope I have helped you!
Frm Yahoo Ans!

 

[GCE As and a level]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_21.pdf

Q2 B) AND C)

I need help in this question plz

 

[Mohammed salik]

Exactly how did u know ?

Something Called Sixth Sense, I think u r an Arab somewhere Abroad!!
I have been with arabs Half of my Life
If its not True then Dont Mind plz !!

 

[princeali97]

Q2.Please explain all parts.Thanks in advance.http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_s13_qp_23.pdf

 

[GCE As and a level]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_21.pdf

Q2 B) AND C)

I need help in this question plz

 

[joanna omar]

Something Called Sixth Sense, I think u r an Arab somewhere Abroad!!
I have been with arabs Half of my Life
If its not True then Dont Mind plz !!

Completely ture mashallah

 

[joanna omar]

AS known that HB is formed of 4 polypeptides ?
How are these joined together? IS IT BY HYDROGEN BONDS ?

 

[Thought blocker]

ALL THE VERY VERY BEST GUYS,

DIKHADENA UN CIE WALO KO KI HUM KYA CHEEZ HAIN..

 

[Mohammed salik]

Completely ture mashallah

Thanks Sis !!
I m Half-ARAB!!

 

[Mohammed salik]

Q2.Please explain all parts.Thanks in advance.http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s13_qp_23.pdf

Worst Question in Last 5 Years !
Rata Zinda Bad!!

 

[princeali97]

Worst Question in Last 5 Years !
Rata Zinda Bad!!

Yeah man! srsly the most irritating question paper i've come across.I hope its easy tomorrow.Im damn scared!
BEST OF LUCK EVERYONE!

 

[GCE As and a level]

Guys plz help me with this :
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_21.pdf

Q2 B) AND C)

I need help in this question plz
Thank you

 

[princeali97]

BEST OF LUCK EVERYONE!

 

[Mohammed salik]

Yeah man! srsly the most irritating question paper i've come across.I hope its easy tomorrow.Im damn scared!
BEST OF LUCK EVERYONE!

True That

 

[♣♠ Magnanimous ♣♠]

well which grades are you expecting? guys do tell -->

 

[Mohammed salik]

well which grades are you expecting? guys do tell -->

Everyone Wants an A.. Dahh!

 

[♣♠ Magnanimous ♣♠]

Everyone Wants an A.. Dahh!

i am expecting that but i will surely get B but there are some 0.001 chances less for A because lack of teacher in my school.. my teacher is my internet.