A level Biology: Post your doubts here!

[Moi]

Please Explain!
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w12_qp_52.pdf

Winter pp 52
Q 2 - B iii

Which row do we use?
0.05 or 0.01 Probability

The T test shows the difference is Significant.

And the marking scheme states that we need to use row 0.05 Probabilty.... But why??
Doesn't o.o5 mean its Insignificant and due to chance??

 

[DeViL gURl B)]

What do u mean by a *lysis of a cell* ?
Detailed answer needed please ...

 

[silentkiller97]

well the whole part.

! ! ---> ! | ! | ----> ! | | | | | ! |
! ! ! | ! | ! | | | | | ! | ! = N15 | = N 14
(0%) (100%) (50% hybrid DNA's )

Hybrid DNA = ONE WITH BOTH STRANDS ( N14 | AND N15 ! )

 

[silentkiller97]

SORRY IT MIXED

 

[DeViL gURl B)]

! ! ---> ! | ! | ----> ! | | | | | ! |
! ! ! | ! | ! | | | | | ! | ! = N15 | = N 14
(0%) (100%) (50% hybrid DNA's )

Hybrid DNA = ONE WITH BOTH STRANDS ( N14 | AND N15 ! )

:s

 

[ZaqZainab]

! ! ---> ! | ! | ----> ! | | | | | ! |
! ! ! | ! | ! | | | | | ! | ! = N15 | = N 14
(0%) (100%) (50% hybrid DNA's )

Hybrid DNA = ONE WITH BOTH STRANDS ( N14 | AND N15 ! )

You mean

! !
! | and ! |
! | and | | and | | and ! |

 

[♣♠ Magnanimous ♣♠]

SORRY IT MIXED

Is this your solution?

 

[DeViL gURl B)]

You mean

! !
! | and ! |
! | and | | and | | and ! |

Ssup with the exclamation and the other thingi ..I mean I know u're tryin to explain..but this is more confusing .. No offense
Thank u

 

[thats_me]

Meray bicharay eye piece graticule ka please kuch baat do lol DeViL gURl B)

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?

 

[♣♠ Magnanimous ♣♠]

Meray bicharay eye piece graticule ka please kuch baat do lol DeViL gURl B)

i too wanna know the solution. i am not getting it.

 

[DeViL gURl B)]

Meray bicharay eye piece graticule ka please kuch baat do lol DeViL gURl B)

Well meinai bhi subha hi yahan are seekha ... But I dunno kae aap ko samajh aai ya na aaye

 

[DeViL gURl B)]

Lemme

Well meinai bhi subha hi yahan are seekha ... But I dunno kae aap ko samajh aai ya na aaye

try

 

[♣♠ Magnanimous ♣♠]

Well meinai bhi subha hi yahan are seekha ... But I dunno kae aap ko samajh aai ya na aaye

muje samjao shayad samaj me a jaye.

 

[thats_me]

Lemme

try

Yeah please

 

[ZaqZainab]

Ssup with the exclamation and the other thingi ..I mean I know u're tryin to explain..but this is more confusing .. No offense
Thank u

He used them it got messed up so i showed the same thing not messed up
I told you to read the coruse book page 109 it explains quite well

 

[♣♠ Magnanimous ♣♠]

He used them it got messed up so i showed the same thing not messed up
I told you to read the coruse book page 109 it explains quite well

my book page 109 shows protein synthesis

 

[Exo_luhan]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w10_qp_12.pdf
Q1 WHY NOT B?

 

[DeViL gURl B)]

Acha tw here's the thing ..

First of all as they've given 0.1 mm which is equal to 100 um
If u count the number of units in between the eye piece graticule.. They are 40 units in total
So that means 40 units = 100 um

Now measure the length as in the units using the micrometer scale given.. That is almost 4 units
Now cross multiply

40 units = 100 um
4 units = x

Answer is 10

 

[ZaqZainab]

my book page 109 shows protein synthesis

what edition do you have i am talking about th 3rd one
its under Genitic control chapter Just before protein synthesis

 

[DeViL gURl B)]

muje samjao shayad samaj me a jaye.

Meray bicharay eye piece graticule ka please kuch baat do lol DeViL gURl B)

DONE!