Official AQA GCSE Biology Unit 2 22nd Janurary NEW SPEC

It asked how cell A and ribosomes work together, you had to. Cell's go through protein synthesis, mitochondria give energy, energy is used for when amino acids join together to make a protein. None of the genetic code stuff!

why does the cell need 23 chromosomes?

i wrote because all body cell have 46 chromosomes and the fusion of gametes can only lead up to 46 chromosomes. and just to squeeze in, i added to sexually reproduce to cause genetic variety.

It asked how cell A and ribosomes work together, you had to. Cell's go through protein synthesis, mitochondria give energy, energy is used for when amino acids join together to make a protein. None of the genetic code stuff!

No, you could actually talk about other tissues including the palisade tissues and the guard or stomata..
In the specification it specifically mentions mesophyll, xylem and phloem and epidermal, but only as EXAMPLES.. So they probably will allow more, especially as its a 6 marker meaning lots of answers!

Yeah, I agree about the grade boundaries!
& same, I got 50% too
What did you get for the question before that? Heterozygous?

And lastly, for the question about how oxygen gets from the blood to the mitochondria..
I wrote something like:
The oxygen moves from a high concentration in the blood to a low concentration in the cell which is down the concentration gradient. The oxygen passes through a partially permeable membrane..

Was it 3 or 4 marks? If you remember?
Best of luck on your results though, I'm sure you'll be fine, I think they'll be out March the 10th

Seriously your a sad ****, why come in this brilliant forum where people help each other with revision and post false information ? if you wanna troll do it in real life; you'll probably get beaten up and have your balls fed to you.

Every one report this sad person who has probably got a ****ty C in compariosn with alot of you who always get A/A*

I put:

"The oxygen moves into Part A via diffusion, this is due to there being a lower concentration of oxygen in the cell and a higher concentration of oxygen in the blood, this means the oxygen molecules will move down the concentration gradient across a partially permeable membrane into the mitochondria"

How many marks would that get>

tis is y the answer cannot be 50% for the punet square questionn. it has to be 75 as two parents who have the disorder form 3 affected alleles. i'm still unsure thoughh

tis is y the answer cannot be 50% for the punet square questionn. it has to be 75 as two parents who have the disorder form 3 affected alleles. i'm still unsure thoughh

i wrote higher temperatures, fast enzyme reactions
i wrote using enzymes is cheaper

WOW! that guy is such a idoit!
But, for that question can you write about like, less enzymes would be needed hence, it would be cheaper to produce the enzyme.. ? I think I got the most of the things!

WOW! that guy is such a idoit!
But, for that question can you write about like, less enzymes would be needed hence, it would be cheaper to produce the enzyme.. ? I think I got the most of the things!

tis is y the answer cannot be 50% for the punet square questionn. it has to be 75 as two parents who have the disorder form 3 affected alleles. i'm still unsure thoughh

You got it wrong! It never asked for the genetic diagram of 1 and 2. It asked for the genetic diagram of 7 and 8:

but how do you know the alleles for 7 is not HH or Hh, both of them show affected alleles.