Biology; Chemistry; Physics: Post your doubts here!

[funky brat]

PROBLEM HERE I THOUGHT ANSWER WAS D BUT ITS C. WHAT DO U PPL THINK. AM I CONFUSED IN STRUCTURES.

It's C definitely. Xylem conducts water and phloem sugars. The dark circles are xylem and there is cambium in between then phloem.

 

[exploded diper]

so only the sperm nucleus enters the egg cell

 

[exploded diper]

is bacterial membrane made of cellulose

 

[asadalam]

is bacterial membrane made of cellulose

No its made of proteins and lipids,cell wall is composed of cellulose.

so only the sperm nucleus enters the phloem

What do you mean?There is no sperm nucleus and no gamete enters the phloem!

 

[Faizan Muhammmad]

so only the sperm nucleus enters the phloem

RIP Biology
You shall be remembered in our hearts as 5090 the slain

 

[exploded diper]

is animal pruteen included in our syllabus........

 

[Faizan Muhammmad]

5090 s12 qp 11
Q27 ,do read the er as well
-___-
ham nay bio p1 daina hay ya pahailiyon ya english ka paper ?

 

[asadalam]

5090 s12 qp 11
Q27 ,do read the er as well
-___-
ham nay bio p1 daina hay ya pahailiyon ya english ka paper ?

hahaha,yeah thats screwed up.....

 

[Suhaib]

i hv anothe Q . in epremints of plants. the apprsatus is coverd bya black cloth or covering smtimes. WHAT'S THE PURPOSE?

That is for the experiment to test the effect of light on photosynthesis.... In this case Light is Being Stopped by black cloth.

 

[funky brat]

is animal pruteen included in our syllabus........

You mean SCP, it is.

 

[funky brat]

5090 s12 qp 11
Q27 ,do read the er as well
-___-
ham nay bio p1 daina hay ya pahailiyon ya english ka paper ?

Antibiotics cannot treat viruses, is this the problem?
I mean is qisam kay questions mai kay karna hai?
Seedhi seedhi bat hai, bacteria immune ho jata hai.

 

[funky brat]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_s10_qp_11.pdf
Why is 38 B option not correct?
every gene encodes for a specific protein that has it's distinctive function, I never heard this though.
I know what the ER says about option B, but sarey bacteria resistant ho jaen gey to phir?

 

[funky brat]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w10_qp_11.pdf
MCQ 20. Does sweat secretion ever stop? :/ It slows down only.

 

[Awesome12]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_s10_qp_11.pdf
Why is 38 B option not correct?
every gene encodes for a specific protein that has it's distinctive function, I never heard this though.
I know what the ER says about option B, but sarey bacteria resistant ho jaen gey to phir?

Bacteria cannot be be insulin resistant. You 3 line is absolutely correct, and it is the little change in these genes that accord to different physical characteristics of human beings Option D is a better answer

 

[Awesome12]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w10_qp_11.pdf
MCQ 20. Does sweat secretion ever stop? :/ It slows down only.

This is CIE . There is no option such as 'slows down'. You already know that sweat won't be secreted as the temp falls, so that leaves us with options C and D

 

[asadalam]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w10_qp_11.pdf
MCQ 20. Does sweat secretion ever stop? :/ It slows down only.

The main purpose is to identify if the candidate can see that secretion is slowed or stopped,we dont have to go into the technicalities

 

[Fate0]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w10_qp_11.pdf
MCQ 20. Does sweat secretion ever stop? :/ It slows down only.

It does stop. Sardiyon main kabhi have you ever sweat unless you were doing something?

 

[Awesome12]

It does stop. Sardiyon main kabhi have you ever sweat unless you were doing something?

Yeah, but you do perspire, although that is not sweat

 

[Faizan Muhammmad]

Antibiotics cannot treat viruses, is this the problem?
I mean is qisam kay questions mai kay karna hai?
Seedhi seedhi bat hai, bacteria immune ho jata hai.

that is but everyone knows that it is it
you cant use umbrella for playing cricket, is that umbrella's fault?
it should be immune but cie no accept it

 

[funky brat]

It does stop. Sardiyon main kabhi have you ever sweat unless you were doing something?

The streaks of sweat are only visible when it's really hot. Sweating occurs all the time.