AQA BIOL1 Biology Unit 1 Exam - 16th May 2011

Plus a lot of people on TSR are more likely to be in C/B/A category. You can't forget about everyone else, who may be getting U's etc, which will help lower the grade boundaries - so don't base the grade boudaries on just everyone here.

I hope you are right, my ISA was 30/50. I need 80% in this and 90% in the next exam for an A which is looking unlikely

That's looking at everybody not on TSR as idiots. People outside of TSR could also get A's raising the grade boundary. Just depends how you look at the glass half empty or half full.

Mulitplying it by 100,000 wouldn't get it per 100,000.

I'm not saying they're all stupid.. Just trying to be positive.

That's looking at everybody not on TSR as idiots. People outside of TSR could also get A's raising the grade boundary. Just depends how you look at the glass half empty or half full.

Mulitplying it by 100,000 wouldn't get it per 100,000.

It should, say 5000 people in 1 000 000 people, divide 5000/1000000 = 0.005 and multiplied by 100 000 gives 500 per 100 000 which does make sense.

I think it does.

So lets say there were 500 deaths from cause X in population Y of 5,000,000.

(500/5,000,000)x100,000 . Gives 10 deaths per 100,000 people from cause X in population Y.

I can swear that was the formula for it.

the NT includes about glucose and then talks about villi! do you have NT?

I think you only need 240 UMS to get an A.

Didnt the question ask to calculate the RATE of breast cancer deaths?

Mine went great, I don't know what to say Really only had one moment where I had to stab at the answer, which was the reducing sugar test. I took a shot and said to add Benedict's Reagent and that a red precipitate would form. Turns out that was completely correct I couldn't be sure that it was either Benedict's or that a red precipitate would form (unless my subconscious was putting them together). Pretty chuffed at that.

I stated these for the Epithelial cell:

-Mitochondria to produce ATP for active transport
-Microvilli to increase surface area and therefore diffusion rate
-Thin surface of microvilli to increase diffusion rate
-carrier and channel proteins to allow access for products of digestion
-sodium-glucose co-transporters for active transport of glucose
-free sodium in cytoplasm that can be ejected into lumen to stimulate active transport

for the phagocyte I put:

-phagocyte recognises pathogen as non-body cell
-phagocyte's cytoplasm moves around pathogen
-pathogen suspended in vacuole
-lysosome fuses with vacuole
-lysosome releases lysosomal enzymes which digest and kill pathogen
-phagocyte presents pathogen's antigen's on it's surface

For the 4-mark Emphysema I put:

-Phagocytes release enzyme which digests fibrin in cell walls
-prevents alveoli from recoiling and expelling air so less fresh oxygen can enter
-breaks down alveoli walls which decreases surface area and therefore increasing diffusion rate
-particles in lungs thicken alveoli wall that's left increasing diffusion rate


Pretty happy I think

Yeah, the 30/50 is around 30UMS.
I need 210 more. I think I got 40-45 today. Thats 70 UMS maximum.

Therefore, I need 140/140 on thursday. I dont even know half the content. FML

Mine went great, I don't know what to say Really only had one moment where I had to stab at the answer, which was the reducing sugar test. I took a shot and said to add Benedict's Reagent and that a red precipitate would form. Turns out that was completely correct I couldn't be sure that it was either Benedict's or that a red precipitate would form (unless my subconscious was putting them together). Pretty chuffed at that.
Pretty happy I think