Biology; Chemistry; Physics: Post your doubts here!

[ashiqbal]

guys while making graph the dependent factor comes on y-axis nd independent on x-axis??m i rite??
cnfused

yes it does. dont be confused, as confusion leads to failiure.

 

[Rimsa]

Bio ATP notes. made by myself with help from Marking Schemes

in the protein test; you have written two tests. biuret test and one of sodium hydroxide and coppersulfate. my teacher said NaOH (aq) + CuSO4 make up biuret solution. aint it?

 

[scouserlfc]

in the protein test; you have written two tests. biuret test and one of sodium hydroxide and coppersulfate. my teacher said NaOH (aq) + CuSO4 make up biuret solution. aint it?

Exactly both make it up but their concentrations differ !
Its the same thing u dont really need to write CuSO4 and NaOH u can state straight away biuret reagent is added !

 

[Vogue]

wat does it mean by monohybrid?

 

[ashiqbal]

wat does it mean by monohybrid?

only two types of alleles for one particular characteristic, with no intermediate phenotypes, only the dominant
(Homozygous dominant and heterozygous genotype) and recessive(homozygous recessive) phenotypes.

mainly only two distinct characteristics. eg red and white flowers.

 

[areeba fatima]

what is the correct chemical equaton for photosynthesis:
6CO2+12H2O::::::::::::::> C6H12O6+ 6O2 + 6H2O
OR
6CO2+ 6H2O::::::::::::::> C6H12O6+ 6O2

 

[ashiqbal]

what is the correct chemical equaton for photosynthesis:
6CO2+12H2O::::::::::::::> C6H12O6+ 6O2 + 6H2O
OR
6CO2+ 6H2O::::::::::::::> C6H12O6+ 6O2

6CO2 + 12 H2O :::LIGHT + CHLOROPHYLL::::::> C6H12O6 + 6O2 + 6 H2O

 

[areeba fatima]

6CO2 + 12 H2O :::LIGHT + CHLOROPHYLL::::::> C6H12O6 + 6O2 + 6 H2O

thank you

 

[scouserlfc]

6CO2 + 12 H2O :::LIGHT + CHLOROPHYLL::::::> C6H12O6 + 6O2 + 6 H2O

Hmm man dont u think we should use the equation of with no water end product as in the MS they write that one and not this one and i have a CIE endorsed book which also says the same,i know this equation is the new one but still we use the old one to state that photosynthesis is a pprocess by which ............................................ and oxygen is released as a waste product,Just trying to tell u that u dont say Water vapour is released as the waste product ! So the first one should be used and not this one

 

[ashiqbal]

Hmm man dont u think we should use the equation of with no water end product as in the MS they write that one and not this one and i have a CIE endorsed book which also says the same,i know this equation is the new one but still we use the old one to state that photosynthesis is a pprocess by which ............................................ and oxygen is released as a waste product,Just trying to tell u that u dont say Water vapour is released as the waste product ! So the first one should be used and not this one

if u have gone completely out of your mind , it wouldnt matter if u used the old or new equation, however in actuality, the old equation is completely wrong, and i dont know which marking schemes and books you are reading.

 

[scouserlfc]

if u have gone completely out of your mind , it wouldnt matter if u used the old or new equation, however in actuality, the old equation is completely wrong, and i dont know which marking schemes and books you are reading.

I dont know man but its endorsed and in the syllabus ! but ill check the ms when i get time after ATP for know use whicg ever one u like
Yup i think u are correct but it never matters if u can use a bit of energy and see which is right and what is wrong !!

 

[ashiqbal]

I dont know man but its endorsed and in the syllabus ! but ill check the ms when i get time after ATP for know use whicg ever one u like
Yup i think u are correct but it never matters if u can use a bit of energy and see which is right and what is wrong !!

bhai paani kai aur bohot saaray intermediate processes hotay hain in photosynthesis!!! aur agar tum yeh nahin batao gai k photosynthesis releases water, to pani release kahan sai ho raha hai!?!?!?!?!?!?

 

[scouserlfc]

bhai paani kai aur bohot saaray intermediate processes hotay hain in photosynthesis!!! aur agar tum yeh nahin batao gai k photosynthesis releases water, to pani release kahan sai ho raha hai!?!?!?!?!?!?

ill look at it and tell u later for know lets go back to english but i do think u are telling right !

 

[ashiqbal]

ill look at it and tell u later for know lets go back to english but i do think u are telling right !

 

[SilverCrest]

can someone help me out wid this??Where is the hair erector muscle in Q2?

 

[JojiKhan]

Give answer with reason for Mcq no:
5
19
35
39

 

[areeba fatima]

Give answer with reason for Mcq no:
5
19
35
39

5 (B) because only one
electron is shared between CL2, HCl, and H2
35 (C) becuase the D option is a carboxylic acid and there is a OH group in A,B and C option
check the examiner reports there are reasons given for the answers

 

[nafis shahRiyar]

What happens when we reverse the battery of the c.r.o ??

 

[SalmanPakRocks]

nafis shahRiyar: The current gets reversed.

 

[Vogue]

what does yeast gain from fermentation?
a) CO2 for respiration
b) energy for growth
c) ethanol for growth
d)glucose for respiration