AQA Biology Additional science 20/05/09

Soil, Respiration and the other two, what were they? lol It certainly wasn't any of those two though.

Lol does anyone remember doing the insulin question
which was 3 marks and you had to put an advantage nd disadvantage
What do you think you put down??

That would give you two marks wouldn't it? Where would the other one come from?

What you guys put for that Q on cystic fibrosis 1 in 30 but people who suffer is 1 in 900?

I put that it is only a probability and I also put that there are more people who are healthy so they are more likely to breed healthy children with someone suffering from cystic fibrosis and because its recessive the children won't have it.

(Hope it's right)

i wrote something along the lines of... the disorder is caused by a recessive allele therefore it needs to be present on both chromosones in order to have an effect, many people contian one of the alleles and are therefore carriers but not sufferers.. just a more elongated version

What you guys put for that Q on cystic fibrosis 1 in 30 but people who suffer is 1 in 900?

I put that it is only a probability and I also put that there are more people who are healthy so they are more likely to breed healthy children with someone suffering from cystic fibrosis and because its recessive the children won't have it.

(Hope it's right)

As cystic fibrosis is recessive, both parents need to be carriers for the offspring to have the disorder. The chance of this happening is $1/30 * 1/30 = 1/900$.

I was going to put that but oh well 1 mark is OK.

Was the question 1 mark or 2 marks??

In regards to if enzymes are present when cullturing bacteria, they often are in cheese making as they are added to increase the separation of the cheese

im so scared that all that experiment crap comes up
in one of the past papers for b2 is said where does systic fibrosis effect?
and i thought well pretty straight foreward and wrote exactly what was in the text book, all organs especially pancreas and lungs
the answers was cell membranes!! what the ****?