can any1 help with BIO mcq'zz plzzzz

[mrpaudel]

the answer is C...and here's an xplaination...
0.1mm is given to us...so diameter of that circle is
0.1/40 *100=0.25mm...which is 250micrometer..!1

and area of circle is pi*r^2.///so pi* 250/2 * 250/2 gives u C

 

[mrpaudel]

u need to know that above one is stage micrometer and down one is eyepiece...so we can calculate the length of 100 division of eyepiece.. by above method..and u get that....u got me, right?

 

[lychee26]

Oh okay.
And question 39 of the same paper?

 

[mrpaudel]

ok..answer is B...coz 1st...current flow in Atria...means 1st one is P ..coz i guess u have studied that graph of it.....the peak in P is not higher and yes..u know..the pressure there is not sp higher either...so 1st is P..and for 2nd..look Q R and S...for Q and R they are in ventricular systole..means contraction of walls..!! whereas S in now startin its diastole..means relaxation...but there isnot the option P and S..so u can choose P and T.....simply for T too..u can look this way..i.e by eliminating others...or T also has got less higher peak..which is same in the relaxation time...

 

[lychee26]

Okay i got this one. Have you done all the past papers? i'm almost done with all. i'm scoring 30-35 .. is it good enough ?
i usually mess up the calculation parts.

 

[mrpaudel]

Dude, u are better than me then...! i have never scored more than B..while doing past papers too..!! m confused in some of them..and will post those things tomorrow..!!...will try my best to score an A on tuesday!!.....i think scoring more than 32 is enough..!!

 

[lychee26]

Oh but you're able to do all the difficult ones.

What type of questions are you finding difficult?

 

[Fauziya]

help i cant undrstnd this!!

 

[kanz123]

lol the part missing isnt importnt so i dnt post dat......neway so now tell how do we do it ?

 

[sweetiepie]

see 23 my answer itx C yaar...

 

[lychee26]

How come it's C ?

 

[Fauziya]

:unknown: :Search:

 

[Fauziya]

lol the part missing isnt importnt so i dnt post dat......neway so now tell how do we do it ?

its B
tRNA n DNA has the same sequence but U is replaced by T... its so simple B

 

[kanz123]

see 23 my answer itx C yaar...

hey evn i got it as C bt the answer is B

 

[sweetiepie]

yeah i also got C bt answer B..

 

[kanz123]

:unknown: :Search:

is the answer A ??

 

[sweetiepie]

ya itx A it is because the water potential outside the cell is less, hence osmosis takes place and water moves out of the cell. As a result the cell shrinks in size......

 

[lychee26]

i said the same.

 

[sweetiepie]

ya datz wat i rote da same reason like u...

 

[lychee26]

Hahaha i know right! How's your prep?