Physics, Chemistry and Biology: Post your doubts here!

[chinnu123]

How can two positive particles(protons) be together in a single nucleus

 

[My Name]

What is auxin ??

It is a plant hormone responsible for plant growth produced in the tips of the shoots and roots.

 

[My Name]

Also, I wanted to know whether or not key words are really important..........coz from what I heard, it seems that keywords are the most important thing in biology...............plzzzz help

They are important because they tell you how you need to answer a question.
( And obviously you need to look at the number of marks as well.)

 

[sj0007]

They are important because they tell you how you need to answer a question.
( And obviously you need to look at the number of marks as well.)

ummmm........thanks but there must be just some important keywords that u need to write in the answers, right??? Cuz I don't know so many keywords........

 

[My Name]

ummmm........thanks but there must be just some important keywords that u need to write in the answers, right??? Cuz I don't know so many keywords........

Oh...I thought you were talking about command words...sorry my mistake.
Yes... there would be a few of words which are a MUST in your answer.

 

[sj0007]

Oh...I thought you were talking about command words...sorry my mistake.
Yes... there would be a few of words which are a MUST in your answer.

Thanks........my teacher wanted like a keyword in every answer and she makes it look like if I don't write keywords, I will fail..........was confused......

 

[sj0007]

Oh...I thought you were talking about command words...sorry my mistake.
Yes... there would be a few of words which are a MUST in your answer.

Are u appearing this year??

 

[My Name]

Are u appearing this year??

No.

 

[My Name]

Thanks........my teacher wanted like a keyword in every answer and she makes it look like if I don't write keywords, I will fail..........was confused......

Welcome.
So you do understand that in answers there will be words which are necessary to get you full marks...

 

[sj0007]

Welcome.
So you do understand that in answers there will be words which are necessary to get you full marks...

yes..........also do u have any idea as to if the structural isomerism of alcohols is included or may be asked in chemistry????? thnxxx alot!!!!!!

 

[My Name]

yes..........also do u have any idea as to if the structural isomerism of alcohols is included or may be asked in chemistry????? thnxxx alot!!!!!!

You do need to know about isomerism( not very much in detail).
They can ask questions like this one:
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w10_qp_32.pdf

 

[Mr.Physics]

It is a plant hormone responsible for plant growth produced in the tips of the shoots and roots.

Nope a hormone is a chemical released by an endocrine gland ,secreted in the bloodstream which targets an organ and alters its activity !!
Auxin isn't released by a gland nor it is secreted in the bloodstream . Then what is it ??

 

[My Name]

Nope a hormone is a chemical released by an endocrine gland ,secreted in the bloodstream which targets an organ and alters its activity !!
Auxin isn't released by a gland nor it is secreted in the bloodstream . Then what is it ??

I think that definition of hormone is correct but specifically for animals.
Auxin is a PLANT hormone so it is not related to "secreted in the bloodstream " but it is the hormone responsible for plant growth.

 

[Mr.Physics]

I think that definition of hormone is correct but specifically for animals.
Auxin is a PLANT hormone so it is not related to "secreted in the bloodstream " but it is the hormone responsible for plant growth.

hmm

 

[sj0007]

You do need to know about isomerism( not very much in detail).
They can ask questions like this one:
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w10_qp_32.pdf

THANKS!!!!!!!!!!! That really helped..........................

 

[My Name]

THANKS!!!!!!!!!!! That really helped..........................

Welcome!
Do practice a lot of past papers (and to be on the safe side check the 2015 syllabus for Organic chemistry and see what it says about isomerism).

 

[jacsroshan]

Hello i needed help in this question... plsss...
Suggest and explain how a named insect could evolve over a period of time. (0610_s03_qp_3.pdf)

 

[Ushnaaa]

Can anyone tell me the important topics in bio, chem and phy.

 

[sj0007]

Can anyone tell me the important topics in bio, chem and phy.

Ummm do u mean like what is in the syllabus............all topics are imp

 

[Ushnaaa]

Ummm do u mean like what is in the syllabus............all topics are imp

Nevermind,I got it covered.