A level Biology: Post your doubts here!

[SohaibButt]

is 11 C? And is 15 B? idk about 28 cuz i havent revised it yet.

Pls explain me 11

 

[innovative_1]

Ok guys who will do this I'll give him/her gold medal ​

 

[angryrider_56]

Pls explain me 11

Look, it's pretty simple....the question said that one amino acid was altered and when you're talking about amino acids this means that they're talking about the primary structure..
Anyways, the primary structure is the base for proteins, so if anything happens to this base, it'll affect everything else. In this case, a change in the 1ry structure will result in a change in 2ry, tertiary, and the quaternary structure as well. That's why answer is C.

 

[angryrider_56]

15 C

but how is this C? It doesnt make a whole lot of sense tbh because as we know, a 10degree difference either doubles the AU or decreases it by alot...

 

[SohaibButt]

but how is this C? It doesnt make a whole lot of sense tbh because as we know, a 10degree difference either doubles the AU or decreases it by alot...

Yeah even A could be possible but C can't be possible

 

[A*****]

Ok guys who will do this I'll give him/her gold medal View attachment 63881​

Thats soooo easyyyyy why would u give a gold medal??

 

[innovative_1]

Thats soooo easyyyyy why would u give a gold medal??

Ok I'll give him/her bronze medal hahah

 

[angryrider_56]

Guys, why not A?

 

[angryrider_56]

Ok guys who will do this I'll give him/her gold medal View attachment 63881​

A, right?

 

[SohaibButt]

View attachment 63882
Guys, why not A?

Always remember whenever sugar r taken out of the sink the water potential inside the phloem decrease

 

[innovative_1]

A, right?

Yes it's A but how?

 

[Hisham Khan]

D maybe..plz tell me the correct answer for this

Palisade mesophyll cell

 

[Hisham Khan]

Won't they both have the same formula? (C6 H10 O5)n is this correct??

yes

 

[Hisham Khan]

D since pressure decreases from capillary to vein and veins have lower thickess than arteries but more than capillaries. Although i dont get the velocity one graph

D is correct velocity of blood decreases in cappillaries for efficient exchange of substances btw cappillary and cell

 

[Hisham Khan]

C

yes

 

[Hisham Khan]

A

Only golgi vesicle D

 

[Hisham Khan]

C

Can you explain question and why answer is C?

 

[angryrider_56]

Yes it's A but how?

50/166 and 50/40

 

[angryrider_56]

Always remember whenever sugar r taken out of the sink the water potential inside the phloem decrease

can u explain abit more in details?

 

[Hisham Khan]

For Q 15,this was indeed tricky.a\As the readings were only taken every ten degrees, the rate could then reach the maximum between the measurements. This could mean between 30°C and 40°C or between 40°C and 50°C for this data.