Biology; Chemistry; Physics: Post your doubts here!

[Rimsa]

''primary consumer takes energy from ... '' or ''primary consumer eats ....'' .

thanku

 

[multixamza01]

thanku

glad to help.

 

[shahzaib roudani 12]

wheresthe specimen for chemistry

 

[ashiqbal]

well my teacher taught about NPN transistors and PNP transistors , p-type semi conductors and n-type semi conductors...!

you lucky guy!

 

[Spidey21]

right right. thankssss. but just one more question. do i have to name specific examples of food web? like say the cow eats grass or just say primary consumer gets energy from producers?????

''primary consumer takes energy from ... '' or ''primary consumer eats ....'' .

yes this should work pretty fine looking at what the question asks...but i would recommend not taking a chance on your three year hardwork and writing like this
plants (producers) ----> Cow ( primary consumer) ---------> Lion ( secondary consumer) ----------> Bacteria (decomposers)

 

[beeloooo]

explain why observed ratios often differ from expected ratios, especially when there are small numbers
of progeny; plz any1 answer diz properly

 

[Spidey21]

explain why observed ratios often differ from expected ratios, especially when there are small numbers
of progeny; plz any1 answer diz properly

progeny??
let me share what i know...
if your talking about yeild??

 

[fatikhalid]

yes its not included! nd i checked that all these electronic topics(logic gates, bistable astable and transistors) rarely cum nd even if they do then its always in EITHER and Or question!

where did u confirm?

 

[nafis shahRiyar]

exactly what should be studied for ATP in the night before the exam??

 

[convent2012]

how many of the electrons in a molecule of ethane, C2H6 are not involved in bonding?? how ???

 

[convent2012]

decane ------> ethane ------> poly(ethene) " how molecular size changes during this process ??? "

 

[multixamza01]

exactly what should be studied for ATP in the night before the exam??

it' better to practice past papers beforehand , and do a quick go through of the entire thing once .

how many of the electrons in a molecule of ethane, C2H6 are not involved in bonding?? how ???

Make a dot - cross diagram. Check .

Something like this :
3H - C - C -H3 => 3H : C : C : H3 ( 3H : C - means 3 single covalent bonds between C-H)

=>No electrons are not involved in sharing .

decane ------> ethane ------> poly(ethene) " how molecular size changes during this process ??? "

Decreases ( decane ----> ethane )
Decreases (ethane -----> ethene )
Increases [ ethene -----> poly(ethene)]

 

[Spidey21]

exactly what should be studied for ATP in the night before the exam??

well i recommend you go through the experiments in the book and the basic things used in the experiments, even the basics, i guess that will help you out...and yes obviously...do some prayer for yourself for a good paper...

 

[fatikhalid]

exactly what should be studied for ATP in the night before the exam??

practice past papers!..

 

[fatikhalid]

(i) describe the use of an astable circuit
(ii) describe how the frequencey of an astable circuit is related to the values of the resistive and capacitative components

 

[fatikhalid]

state the meaning of the terms processor , output device and feedback

 

[SalmanPakRocks]

state the meaning of the terms processor , output device and feedback

Subject?

 

[fatikhalid]

Subject?

physics

 

[convent2012]

help me in chemistry n2004 p2 a1 part c !

 

[SalmanPakRocks]

help me in chemistry n2004 p2 a1 part c !

Decreases, Descreases, Increases