AQA Biology 5 - 23rd June 2015 - Essay: Predictions & Past Essays

Reply 40

Scitty

16

Original post by Kings_queens

CAN SOMEONE FIND OUT IF THIS IS TRUE PLEASE https://twitter.com/biology267383

Whether it's true or not, no questions are shown. Doesn't help us either way, although if AQA get word…

Reply 41

cherrybanana

2

Any ideas for what to write if the essay is? :smile:

-the functions of nucleic acids
-factors which influence the concentration of glucose in the blood
-the process of diffusion and its importance in living organisms
-factors which determine an organisms phenotype

Reply 42

marethyu

2

Any ideas for some out of spec stuff for a DNA essay?

Reply 43

Sarcastic Goats

OP

3

Original post by marethyu

Any ideas for some out of spec stuff for a DNA essay?

Unless you were some geneticist there's probably not much out of spec stuff

Reply 44

zoesacademia

5

i've got essays on cycles, shapes fitting together, membranes and their functions, exchanges with external environment and importance of proteins and CO2 all having been marked as 19-21 if anyone has any different titles would be appreciated! for a swap :smile:

Reply 45

cilla_e

3

Original post by marethyu

Any ideas for some out of spec stuff for a DNA essay?

Hii,

On the BBC news lately there is this thing about 'CRISPR' that forms a part of a bacterial DNA.
when a bacteria is infected with a virus, the bacteria has short palindromic repeats of DNA pieces that are complementary to the DNA of the virus.

They use these repeats to make RNA molecules that bind to the viral DNA.

Then a 2nd piece of RNA is made from the repeats of DNA interacts with a protein

the protein will then cleave the virus DNA and inactivate the virus

Researchers can use this techniques in Gene therapy to knock out specific genes

I hope this helps!
its been on the news for a While.....which is why I think that DNA may come up as a 25 marker
:smile:

Reply 46

cilla_e

3

Could some one pleaseeee explain genetic restriction mapping and interpreting its data to me?!

Reply 47

zoesacademia

5

Original post by Sarcastic Goats

Unless you were some geneticist there's probably not much out of spec stuff

all i can think is some genetic diseases not given to you i.e. not sickle cell or cystic fibrosis.
how certain mutagens affect the DNA?
discovery of human genome/pcr machine?
idk not much you can know without doing loads of extra stuff and who tf has time for that when you need to know u1 and 2 as well :/ :')

Reply 48

AlohaCharlotte

3

Original post by zoedisley

all i can think is some genetic diseases not given to you i.e. not sickle cell or cystic fibrosis.
how certain mutagens affect the DNA?
discovery of human genome/pcr machine?
idk not much you can know without doing loads of extra stuff and who tf has time for that when you need to know u1 and 2 as well :/ :' :wink:

My biology teacher said that as sickle cell and cystic fibrosis actually aren't mentioned specifically in the spec and are given as examples you can gain synoptic marks for it.

Also - if you do chemistry, you can get out of spec marks for hydrogen bonding apparently.

Reply 49

Cathy678

1

What topics are people thinking about talking about if DNA comes up from the different units?

Reply 50

charlie2466

12

Original post by AlohaCharlotte

My biology teacher said that as sickle cell and cystic fibrosis actually aren't mentioned specifically in the spec and are given as examples you can gain synoptic marks for it.

Also - if you do chemistry, you can get out of spec marks for hydrogen bonding apparently.

Yea sickle cell anemia, SCID and CF all count as 'content not on the specification' and therefore count as additional information :smile:

Reply 51

12284

8

Original post by zoedisley

i've got essays on cycles, shapes fitting together, membranes and their functions, exchanges with external environment and importance of proteins and CO2 all having been marked as 19-21 if anyone has any different titles would be appreciated! for a swap :smile:

Me!
I've got negative feedback, DNA in science and technology or importance of water?

Reply 52

hopingmedicinae

4

So guys

So guys here are Pollock's Predictions, shall we plan them?

Spoiler

Reply 53

charlie2466

12

Original post by hopingmedicinae

So guys

So guys here are Pollock's Predictions, shall we plan them?

Spoiler

Yessss let's plan them :smile:

Reply 54

Saraneth

4

Ahaha and do share these plans, and when I say plans, be specific all AS knowledge has leaked out of my head

Reply 55

Saraneth

4

Original post by hopingmedicinae

So guys

So guys here are Pollock's Predictions, shall we plan them?

Spoiler

He also said how populations change, and the factors that cause these changes

Reply 56

thomaarrss

2

does anyone know the importance of writing a really captivating intro? can we just get right into the content straight away?

Reply 57

thomaarrss

2

Original post by charlie2466

Yessss let's plan them :smile:

what could you write for transport and exchange systems?!

Reply 58

ranimayx

1

What would you write for 'many functions of concentration gradients'?

Reply 59

Sacred Ground

19

Original post by ranimayx

What would you write for 'many functions of concentration gradients'?

Synaptic transmission
Sodium potassium pump -
Maintaining resting potential
Diffusion of IAA
Active transport in the small intestine
Oral rehydration solution - vibrio cholerae
Diffusion through the membrane - maybe mRNA into the cytoplasm through the nuclear pore?
Diffusion of hydrogen ions through ATP synthase in the electron transport chain

AQA Biology 5 - 23rd June 2015 - Essay: Predictions & Past Essays

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