Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

check this link out!! basic things here for Physics and Chemistry!!
http://www.citycollegiate.com/index.htm

 

[CoolBreeze]

u have not answered to this one!!

So just answer it!!

 

[falcon678]

Yes of course!!!

lol....ok...
m not sure thou ...for first one i gues is tht the potato released some enzymes to digest tht sugar n tht dissolved in the solution in the potato...
for b)i) the potato may ve shrunken due to water leaving the potato into the conc solution due water potential being lower in outside solution....
b)ii) no chnge....

c) so tht diffusion n osmosis cld take place....

 

[ritesh isuri]

So just answer it!!

hey people learn by trial and errors!! you could have at least try and then ask for help!! just try and see if u do not really know the answer then i'll help

 

[CoolBreeze]

Can you explain me the ethanol emulsion test for both solids and liquids?

 

[CoolBreeze]

Does Maltase come in the category of Carbohydrases???

 

[ritesh isuri]

Can you explain me the ethanol emulsion test for both solids and liquids?

a few drops of oil is added to 2cm3 of ethanol in a test tube. then close the tube with ur thumb and shake it. u then add a few drops of water until u see a white emusion or tiny droplets of oil on the surface. for the solid u just need to crush them and do the same thing

 

[ritesh isuri]

Does Maltase come in the category of Carbohydrases???

yes

 

[CoolBreeze]

Do extreme pH denature the enzyme just like high temperature?

 

[ritesh isuri]

Do extreme pH denature the enzyme just like high temperature?

if u put an enzyme in a solution of ph which is not its optimum it will be denatured

 

[CoolBreeze]

Does benedict test give presence of glycogen as well??

 

[ritesh isuri]

Does benedict test give presence of glycogen as well??

glycogen is a non reducing sugar therefore cannot be tested using benedict solution but it is tested using iodine solution and it gives a brown blue color with iodine

 

[CoolBreeze]

Is fibre inorganic or organic?

 

[CoolBreeze]

How do I calculate the initial rate of reaction on this graph?

 

[falcon678]

Is fibre inorganic or organic?

technicali it is organic....

How do I calculate the initial rate of reaction on this graph?View attachment 18967

draw a tangent at 30 thn find itz gradient...

 

[ritesh isuri]

Is fibre inorganic or organic?

it depends because both natural and artificial fibre exists!!

 

[Mars-on-Earth]

no it is not good the force applied due to engine is 3000N. from the equation F=ma, we get the resultant force and for the resultant force to be 2000 the engine force must be 3000 so that 3000-1000=2000N. and if the engine force would have been 1000 then the resultant force would be zero and the car would have moved with a constant speed and acceleration would not have been possible!!!

Got it! Thanks.

 

[Mars-on-Earth]

not necessary!! if the resultant force is zero the ball can still move but with constant speed!!

I merely meant to explain the dynamics of third law of motion. What you said is correct but considering that there is not a constant external force applying on the ball (if you just pushed it) the opposing force would eventually overcome the initial force so the ball has to rest.

 

[ritesh isuri]

I merely meant to explain the dynamics of third law of motion. What you said is correct but considering that there is not a constant external force applying on the ball (if you just pushed it) the opposing force would eventually overcome the initial force so the ball has to rest.

well yes you mark a point!!

 

[zeeshan sakhawat]

full Physics and chemestry syllabus doubt ! wud any1 help me? inbox me plzz -.-