AQA B2 21st May 2010 Exam Discussion

Hey, just a quick question.
This:
http://store.aqa.org.uk/over/stat_pdf/AQA-GCSE-LEGACY-GDE-BOUND-JAN10.PDF
was released on March 25th approximately 2 months after the Jan 2010 exams.
So will the May 2010 exam grade boundries be released at the end of July???????

Yup.

Hey guys just wanted to know if i fell 2 marks under the A* grade boundary in B2... but i got 41/45 in B1 (A*) would i still get an A* overall or am i delluding myself...
Because that test was completely random

If you lose heat, you are losing the hot stuff, so surface of the skin cools xD

This is making me confused lol my biology teacher said the vessels dilate in the question. Maybe she didnt hear the question properly or not but grr im so confused

No way dude, constrict because core body temperature was low, don't worry man we are right for sure!

yeah lol but im worried about that lactase question. i answered the questions fine.
For the pH one i answered it right but then said it is unlikely lactase was broken down in the stomach

And for the bile question, was it related to lactase enzymes working better or just so that it emulsifies fats for lipase?

do ya think ill still get the marks?

The bile one was just it neutralises the acid produced in the stomach, and provides alkaline conditions in which enzymes in the small intestine work most effectively And yeah I think you would still get all the marks for that question

was it only 1 mark for the carbon compounds?

Lol. I know ive definitely lost 4 marks altogether (2 carbon compound, animal chromosome number mistake, why carnivores repsire more than herbivores) other than that i could only drop about 1 more mark :P

The bile one was just it neutralises the acid produced in the stomach, and provides alkaline conditions in which enzymes in the small intestine work most effectively And yeah I think you would still get all the marks for that question

No offence, but are you stupid? xD You just said it yourself, CARBON COMPOUNDS, you are saying they would accept starch and sugar as an answer? Wow, you don't have to specify what they are made of, if you don't know that carbohydrates, fats and proteins make up the body of plants then why even do Biology? -.- And for the record, it's "right", not "write"...

Good answers. the pancreas makes the 3 enzymes though - protease, amylase and lipase.

the question about lactase. i think i made a dumb mistake, i thought the table say how long the lactase took to be digested? so i put the same thing as you but in the end said, it is obvious that it was not digested in the stomach due to the wrong pH.

then for the bile question i put it emulsifies the fat in milk breakin it dwn to small droplets (bigger surface area) for LIPID ENZYMES to work faster.

Are you sure it was referring to the enzyme lactase (was that even an enzyme? i cant remember now. lol) i thought the table showed how long it took to be broken down

the GRAPH SHOWED THAT TEMPERATURE INCREASES. so surely for this to happen the VESSELS CONSTRICT to PREVENT BLOOD TO THE SURFACE OF THE SKIN THEREFORE PREVENTING HEAT LOSS BY RADIATION

did anyone put what i did? or am i wrong somewhere?!!!

Since I got 96 UMS in unit 1, I don't think I am stupid no.

Since I got 96 UMS in unit 1, I don't think I am stupid no. I never said that I wrote sugar and starch, so i don't know where you got that from, maybe it's you that is stupid? hmmmmm
Yeah I know that carbohydrates, fats and proteins make up the body of the plant, but what is your point.......

The blood vessels will dilate to warm up the extremities, they will only constrict during hypothermia.



>Implying it's difficult to get high UMS

96 UMS in B1 means NOTHING.