A level Biology: Post your doubts here!

[DeViL gURl B)]

samaj me aya ya phir ese hi thanks bol raha he?

smjh nai aya lol...
during disastole atrioventricular valves are shut hw blood moves from atria to ventricle than

Great samjhana and great samajhna

 

[DeViL gURl B)]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w11_qp_11.pdf

Question 23 and 24 please anyone??

ANYYYONEEE!!!!

 

[♣♠ Magnanimous ♣♠]

ANYYYONEEE!!!!

sorry muje nahi a raha he ye.

 

[DeViL gURl B)]

sorry muje nahi a raha he ye.

It's okhay... Aap kae ilawa bhi tw loog hain na!
Koooooooi haaaaaai!
ANYYYYONEEE Theere???

 

[♣♠ Magnanimous ♣♠]

It's okhay... Aap kae ilawa bhi tw loog hain na!
Koooooooi haaaaaai!
ANYYYYONEEE Theere???

lagta hai ki ham dono ko hi bio ata he,

 

[DeViL gURl B)]

lagta hai ki ham dono ko hi bio ata he,

Haha aisi baat nahin .. I'm not that good
I'm solving papers ... Tough hain yaar!

 

[♣♠ Magnanimous ♣♠]

Haha aisi baat nahin .. I'm not that good
I'm solving papers ... Tough hain yaar!

bohot zyada tough nahi.. muje sirf biological molecules me kam mark ate hai.. baki sab ache ate he mostly.

 

[ZaqZainab]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w11_qp_11.pdf

Question 23 and 24 please anyone??

Q23 do you have the coursebook check out page 109 it explains it quite good
Q24 attachment

 

[ZaqZainab]

lagta hai ki ham dono ko hi bio ata he,

too proud of yourself

 

[silentkiller97]

lagta hai ki ham dono ko hi bio ata he,

Hybrid DNA means the DNA with a Strand of N14 and N15 both
When once divided both DNA are hybrid meaning 100% hybrid DNA.
When once more allowed to grow in N14, 2 are hybrid DNA (having both N14 & N15 strands) and 2 are non hybrid ( those which have both same N14 strand). So this has 50 % hybrid DNA. thus answer is B

 

[♣♠ Magnanimous ♣♠]

too proud of yourself

nah. sarcasm.

 

[♣♠ Magnanimous ♣♠]

Hybrid DNA means the DNA with a Strand of N14 and N15 both
When once divided both DNA are hybrid meaning 100% hybrid DNA.
When once more allowed to grow in N14, 2 are hybrid DNA (having both N14 & N15 strands) and 2 are non hybrid ( those which have both same N14 strand). So this has 50 % hybrid DNA. thus answer is B

elaborate more

 

[sm1998]

View attachment 41507

Its obviously D

 

[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??

 

[♣♠ Magnanimous ♣♠]

Its obviously D

wo barso pehle ka ques tha... ab wo to pappu he..

 

[DeViL gURl B)]

nah. sarcasm.

The funny thing is kae reply kinni jaldi aa gaye after that statement

 

[sm1998]

wo barso pehle ka ques tha... ab wo to pappu he..

Yeah I just noticed sorry

 

[silentkiller97]

elaborate more

please specify the part you dont understand

 

[♣♠ Magnanimous ♣♠]

The funny thing is kae reply kinni jaldi aa gaye after that statement

lol.... ha sahi bat he hahahaha

 

[♣♠ Magnanimous ♣♠]

please specify the part you dont understand

well the whole part.