A level Biology: Post your doubts here!

[nehaoscar]

No ..its not purkenji tissue..i wrote that too.:/
AVN is made up of muscle tissue.
You thought the asme way i did

So then purkyne is not a tissue? :S

 

[Midnight dream]

So then purkyne is not a tissue? :S

It is but that doesn't cause the delay..AVN does
GTG. Allah hafiz ..

 

[Amandaissocoollike]

Wait so it's not purkyne tissue???
Isn't purkyne tissue a tissue
and AVN a node??

That's what I thought! But apparently it's wrong. Everyone wrote AVN.

 

[hizirofaki]

can u plz hel
wht r the organelles with circular Dna

 

[Heba A.Moety]

For standard errors and standard deviation, what does overlapping mean?

well i think it is about drawing error bars
so if u draw a bar chart representing the mean values of 2 sets of data and then draw an error bar extending 2 standard errors above the mean value and 2 standard errors below the mean value then we can be sure that the true mean value lies within the range of these error bars.

plz let me know if this made things clear or not?!

 

[hizirofaki]

what orgenelles have circular DNA FAst plz

 

[hizirofaki]

Help

 

[nehaoscar]

That's what I thought! But apparently it's wrong. Everyone wrote AVN.

Yeah

 

[My Name]

What could be the correct answer for this:

 

[Heba A.Moety]

what orgenelles have circular DNA FAst plz

chloroplasts and mitochodria

 

[Sadi66]

What could be the correct answer for this:
View attachment 53165

C

 

[Heba A.Moety]

What could be the correct answer for this:
View attachment 53165

C

 

[My Name]

C

C

Do yo guys know what year is this?
Ty

 

[Heba A.Moety]

Do yo guys know what year is this?
Ty

nope

 

[Sadi66]

Oct 2012 p11 Q 5 option A is wrong why?

 

[Sadi66]

May june 2013 p12 q21 pl expl

 

[Sadi66]

Started a seperate conversation for mcqs join pls
https://www.xtremepapers.com/community/conversations/biology-as-p1.162260/

 

[nehaoscar]

Oct 2012 p11 Q 5 option A is wrong why?

As the smallest distance to see 2 points seperate decreases, resolution increases.
for example
say you have 2 points 5nm apart, you need a resolution of 5nm
2nm apart = resolution of 2nm --> more resolution needed

 

[Sadi66]

Pls start a new thread for mcq plss

 

[Sadi66]

Nov 2012 p11 q33 explain