A level Biology: Post your doubts here!

[Kanekii]

Q28, why is C wrong??View attachment 63951

Its A and
Carbon monoxide combines IRREVERSIBLY With haemogoblin

 

[Kanekii]

why not C
View attachment 63954

There are cross walls linked by pits.

 

[Hisham Khan]

B answer right

 

[potatocorn12]

View attachment 63956

just checked, B apparently is correc(t The growth of cells does not involve mitosis, whilst an increase in size of living things would involve mitosis to produce more cells.)

 

[Hisham Khan]

Is A correct?

 

[Hisham Khan]

just checked, B apparently is correc(t The growth of cells does not involve mitosis, whilst an increase in size of living things would involve mitosis to produce more cells.)

I have seen in past papers repairing tissues for mitosis is wrong??

 

[Kanekii]

Can someone explain thiss wtf??
View attachment 63953

Each strand contains 15 bases
So use complementary base pairing for this for example strand 1 has 6 A bases so strand 2 will have 6 T bases
Similarly do this for others and for T substract 15 by total

 

[Hisham Khan]

Inne

Each strand contains 15 bases
So use complementary base pairing for this for example strand 1 has 6 A bases so strand 2 will have 6 T bases
Similarly do this for others and for T substract 15 by total

Inner lining of bronchioles is folded to increase surface area right??.Not for helping expansion

 

[Hisham Khan]

A is correct wth lol

ITS BRONCHIOLE F U CAMBRIDGE YOU TRICKSTERS

 

[Kanekii]

B answer rightView attachment 63958

nono its A
companion cells pump H+ ions out so that sucrose and H+ can enter through facillitated diffusion

 

[Hisham Khan]

o

nono its A
companion cells pump H+ ions out so that sucrose and H+ can enter through facillitated diffusion

h yes i misread

 

[Hisham Khan]

 

[Kanekii]

Why D??

i think maybe alcohol will make proteins insoluble/hydrophobic

 

[Hisham Khan]

i think maybe alcohol will make proteins insoluble/hydrophobic

Why not 4 and 5

 

[Hisham Khan]

 

[potatocorn12]

yall,does anyone remember this question which was like which of the following does not occur when blood reaches the lung or something...? can someone upload its screen shot here...or does anyone of your remember what was the answer to it?

 

[Hisham Khan]

no

yall,does anyone remember this question which was like which of the following does not occur when blood reaches the lung or something...? can someone upload its screen shot here...or does anyone of your remember what was the answer to it?

idea

 

[Hisham Khan]

Anyone isin't 2 3 and 4 correct?????

 

[Hisham Khan]

Hard question

 

[Kanekii]

View attachment 63962

I think fleshy leaves are just to attract insects or whatever.
while reducing stomata reduces the overall water potential gradient not just the low water potential gradient.