A level Biology: Post your doubts here!

[MÁťT PŭמҚ]

how do i calculate degrees of freedom with only the t-value given?
paper 5 m/j 2009 q3 b (iv)

 

[MÁťT PŭמҚ]

oct nov 2008 [question 2 b (iv)] paper 5!!!!

 

[MÁťT PŭמҚ]

where do i get the expected results from?

 

[DeViL gURl B)]

growth occurs in cells as you know but the repair means ki jab koi pollutant damage karta hai choromosome of particular cell so it can form cancerous cell but due to mitosis it repairs the damage chromosomes by making the correct sequence of genes from that distracted ones
now got or i explain more reliably?

Got it! Thanks!
No more needed
Okhay btw.. Mitosis is then from a haploid number and meiosis from a diploid no... Ryt?

 

[DeViL gURl B)]

DeViL gURl B) help her please.

Well.. To be honest even I dint get this question ... Just memorized it

 

[Gehad Mohamed]

Hello please help me in Q15 http://papers.xtremepapers.com/CIE/...and AS Level/Biology (9700)/9700_w07_qp_1.pdf

 

[♣♠ Magnanimous ♣♠]

Got it! Thanks!
No more needed
Okhay btw.. Mitosis is then from a haploid number and meiosis from a diploid no... Ryt?

what.. wait a min please too many alerts..

 

[♣♠ Magnanimous ♣♠]

Got it! Thanks!
No more needed
Okhay btw.. Mitosis is then from a haploid number and meiosis from a diploid no... Ryt?

this statement is not fully correct because the organ cells never contain haploid cells only the gametes cells contain so this is statement is 95% incorrect.

 

[MÁťT PŭמҚ]

Hello please help me in Q15 http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w07_qp_1.pdf

As the sucrose conc increases the cell losses water and become less turgid means cell becomes more plasmolysed and the cell become more negative as the water potential decreases inside the cell!

 

[DeViL gURl B)]

F

May/June 13 Paper-11 No.14
May/June 13 Paper 12 No. 12
Can anyone give complete explanations ASAP.

for 12 m/j question 12 is the answer B?

 

[DeViL gURl B)]

this statement is not fully correct because the organ cells never contain haploid cells only the gametes cells contain so this is statement is 95% incorrect.

Uffff Allah!
Okhay so would u mind correcting the statement please?
I hate this chap. Sorry

 

[Gehad Mohamed]

As the sucrose conc increases the cell losses water and become less turgid means cell becomes more plasmolysed and the cell become more negative as the water potential decreases inside the cell!

I know this but the initial/final length is increasing so wat does that mean? !

 

[♣♠ Magnanimous ♣♠]

Uffff Allah!
Okhay so would u mind correcting the statement please?
I hate this chap. Sorry

yeah i will but after some time please because i am taking a short break in sloving doubts... dont mind.

 

[Naoyaa]

Q. 22 anyone? I'm a bit skeptical


http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w10_qp_11.pdf

 

[DeViL gURl B)]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_11.pdf

Question 24??
And question 23??
Plus q 22 as well is it cuz amylase is basicallyl retaliated to protein?

 

[DeViL gURl B)]

yeah i will but after some time please because i am taking a short break in sloving doubts... dont mind.

Sure thanks

 

[MÁťT PŭמҚ]

I know this but the initial/final length is increasing so wat does that mean? !

its the ratio given for the length of cells before and after immersion in sucrose solutions!

 

[Gehad Mohamed]

its the ratio given for the length of cells before and after immersion in sucrose solutions!

Ok thanks

 

[thats_me]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w11_qp_11.pdf can I please get a detailed explanation for Q5?

ANYONE??:/

 

[DeViL gURl B)]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_12.pdf
Question 9 ?
Why isn't it D ?