A level Biology: Post your doubts here!

[Lola_sweet]

View attachment 52803

it cant be A or C bcuz 4 chromatids doesnt happen
its one chromosome made of 2 chromatids
and it cant be D bcuz its asking immediately after mitosis occurs which means once 2 new daughter cells form each cell will ve 8 chromosomes whereas during interphase there could be 16

 

[Sadi66]

Why Dna stable structure. 5 marksanswer

 

[Lola_sweet]

View attachment 52802

its definitely nt D bcuz ribosomes can never be seen under a light microscope
u cant even see the golgi body or the lysosome or mitochondria even if its x400
Thus it has to be C
This is all u see under a light microscope of magnification x400

 

[Sadi66]

]
PlS help me also in detailed descriptive answer of how Dna stable
Describe cancer,tumor frmation
Explain the changes during tumor formation
And why interphase short for cancer cell <mcq>

 

[Lola_sweet]

]
PlS help me also in detailed descriptive answer of how Dna stable
Describe cancer,tumor frmation
Explain the changes during tumor formation
And why interphase short for cancer cell <mcq>

why interphase short for cancer cell

 

[Farhad221]

Ye

it cant be A or C bcuz 4 chromatids doesnt happen
its one chromosome made of 2 chromatids
and it cant be D bcuz its asking immediately after mitosis occurs which means once 2 new daughter cells form each cell will ve 8 chromosomes whereas during interphase there could be 16

Yes the answer is B

 

[Farhad221]

THANK YOU

its definitely nt D bcuz ribosomes can never be seen under a light microscope
u cant even see the golgi body or the lysosome or mitochondria even if its x400
Thus it has to be C
This is all u see under a light microscope of magnification x400

 

[Lola_sweet]

Ye
Yes the answer is B

Oh crap i forgot to mention the right answer

THANK YOU

dnt mention it

 

[Farhad221]

It is B, even i dont know how to get it?

whts the answer?

 

[Lola_sweet]

It is B, even i dont know how to get it?

okie lemme see the qs again

 

[qwertypoiu]

dipeptide will have two amino acids:
0.7nm x 2 = 1.4nm
subtract from this the H2O that is given out:
1.4 nm - 0.110nm - 0.06 x 2 nm = 1.17nm
close enough to 1.2 nm eh?

 

[Farhad221]

Q13

 

[Farhad221]

Q15

 

[Sadi66]

Paper 2 hogia tyyari why only p1

 

[Lola_sweet]

dipeptide will have two amino acids:
0.7nm x 2 = 1.4nm
subtract from this the H2O that is given out:
1.4 nm - 0.110nm - 0.06 x 2 nm = 1.17nm
close enough to 1.2 nm eh?

i got the same thing :/

 

[Farhad221]

Q15

 

[Farhad221]

Q21

 

[Farhad221]

Q21

 

[Farhad221]

Paper 2 hogia tyyari why only p1

I am with you brah.
I was actually doing fine with paper 1 a couple of months ago so i decided to leave the rest for later and now i realised i am not doing that well at all.
Any ways Allhamdulilah Lola-sweet and qwertypoi are here. Thank you guys so much.

 

[Sadi66]

Paper2 done?