Physics, Chemistry and Biology: Post your doubts here!

[somya]

i need some guidance for bio paper 6

biology paper 6 is very easy! just do classification, magnification, go through all the diagrams- they may ask you to label o draw something!!

 

[Prathmesh Thakkar]

biology paper 6 is very easy! just do classification, magnification, go through all the diagrams- they may ask you to label o draw something!!

Learn dat 5 mark answer for enzyme activity n food detection tests....

 

[semsemhosam]

I got the answers to the previous questions.. Thanks anyway.. Could you please help me out with some more doubts..?? I am uploading the two pics of the questions.. Pls let me know as soon as possible because exams aren't far..!! (btw the incomplete word in one of the pics is 'germination')

in the first one i think it is D bcuz 3 organisms r eaten by one organism so it has the mass of the 3 organisms which is the largest compared to the others
in the second i think it is A bcuz this is where the stored food and enzymes r present so when the seed is germinating the water enters the seed and the enzymes r activated by the water o the stored food is being digested so its dry mass decreases

hope my answers were correct & hope they helped

 

[Prathmesh Thakkar]

in the first one i think it is D bcuz 3 organisms r eaten by one organism so it has the mass of the 3 organisms which is the largest compared to the others
in the second i think it is A bcuz this is where the stored food and enzymes r present so when the seed is germinating the water enters the seed and the enzymes r activated by the water o the stored food is being digested so its dry mass decreases

hope my answers were correct & hope they helped

1 st ans cannot be D coz 3 organisums eaten do not stay in d 4th organism always they come out in wates,i e , the whole organism is not edible......
Ans is A coz mass is num*dry mass and as one knows tress have the max dry mass.....the ans should be A

 

[sparsha.mehta]

I got the answers to the previous questions.. Thanks anyway.. Could you please help me out with some more doubts..?? I am uploading the two pics of the questions.. Pls let me know as soon as possible because exams aren't far..!! (btw the incomplete word in one of the pics is 'germination')

A is the ans for both of them....its obvious

 

[semsemhosam]

1 st ans cannot be D coz 3 organisums eaten do not stay in d 4th organism always they come out in wates,i e , the whole organism is not edible......
Ans is A coz mass is num*dry mass and as one knows tress have the max dry mass.....the ans should be A

Thank you

 

[sparsha.mehta]

The waves travel towards the gap at a speed of 3 x 108m/s and have a frequency of
5 x 1014 Hz. Calculate the wavelength of these waves.
and the mark scheme says:
(b) wavelength – speed/frequency in any form
values substituted correctly
answer 6 x 10 m
I am getting 6x10raise to-7m,
can someone tell me how to get 6x10m
(PHYSICS-OCT/NOV 2003)

 

[sparsha.mehta]

The waves travel towards the gap at a speed of 3 x 108m/s and have a frequency of
5 x 1014 Hz. Calculate the wavelength of these waves.
and the mark scheme says:
(b) wavelength – speed/frequency in any form
values substituted correctly
answer 6 x 10 m
I am getting 6x10raise to-7m,
can someone tell me how to get 6x10m
(PHYSICS-OCT/NOV 2003)

reply soon i am really confused.......

 

[Prathmesh Thakkar]

The waves travel towards the gap at a speed of 3 x 108m/s and have a frequency of
5 x 1014 Hz. Calculate the wavelength of these waves.
and the mark scheme says:
(b) wavelength – speed/frequency in any form
values substituted correctly
answer 6 x 10 m
I am getting 6x10raise to-7m,
can someone tell me how to get 6x10m
(PHYSICS-OCT/NOV 2003)

v=f*wavelenght.....
Simply substitute its d same thng...

 

[sparsha.mehta]

v=f*wavelenght.....
Simply substitute its d same thng...

I did that and i am not getting answer

 

[Saahil Parikh]

I did that and i am not getting answer

must be some problem with the mark scheme..

 

[smart_boy]

A is the ans for both of them....its obvious

Can you kindly explain it to me..??

 

[smart_boy]

in the first one i think it is D bcuz 3 organisms r eaten by one organism so it has the mass of the 3 organisms which is the largest compared to the others
in the second i think it is A bcuz this is where the stored food and enzymes r present so when the seed is germinating the water enters the seed and the enzymes r activated by the water o the stored food is being digested so its dry mass decreases

hope my answers were correct & hope they helped

I understood... Thanks a lot..!!

 

[Prathmesh Thakkar]

I understood... Thanks a lot..!!

D isnt d ans boy....its A..!!

 

[smart_boy]

D isnt d ans boy....its A..!!

But what is the logic behind A being the ans...??

 

[Prathmesh Thakkar]

But what is the logic behind A being the ans...??

1 st ans cannot be D coz 3 organisums eaten do not stay in d 4th organism always they come out in wates,i e , the whole organism is not edible......
Ans is A coz mass is num*dry mass and as one knows tress have the max dry mass.....the ans should be A

 

[semsemhosam]

But what is the logic behind A being the ans...??

where did u get this question from ?? isnt is a past paper question if so .. pls check the making scheme

 

[darklashbazinga]

they can- only when you cross the line limit...
but they normally don't do that!!

can u also send it to me
i am weak at polymerisation
and at bio ppr 6???
plzz send me on [email protected]

 

[somya]

can u also send it to me
i am weak at polymerisation
and at bio ppr 6???
plzz send me on [email protected]

bio paper 6 is easy.... n the topics which are often asked are on characteristics in chap 1, food tests, enzymes, magnification, plant photosynthesis and transpiration and sometimes respiration! they can also ask you to draw or label something! that's all you need to get good marks in bio paper 6!!!

 

[somya]

check this link for polymerisation http://www.xtremepapers.com/papers/IB/Chemistry/Resources/polymers.pdf