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Official AQA Biology Unit 3 14th May 2013 NEW SPEC

I've taken it upon myself to research about tadpoles lol yes I think the other substance was oxygen and I think for structure x thin walls or large surface area would count??

http://www.biology-resources.com/frog.html

Reply 1421

bbadonde2

4

Original post by Comp_uter15776

It asked for the duration between 30 and 180, so to get the gradient you need to find out the duration. If the values are 100 overall, (310-210), then you divide 100 by 150 to find what one minute's worth would be - 2/3.

Accidentally divided by 180, how many marks was it? Think it was 2?

Reply 1422

MsRaindrop

Original post by laylarose

Came out of the exam feeling fairly confident... come on TSR and read all of your answers... :emo:

No chance of averaging out an A now as I needed 92 UMS on that exam :frown:

On the bright side, I'm done with Biology for the rest of my life! :woo:

That's how I feel everytime I look on TSR. Everyone's like I put this and there's me like: :eek:

Reply 1423

Comp_uter15776

Original post by fruity97

I've taken it upon myself to research about tadpoles lol yes I think the other substance was oxygen and I think for structure x thin walls or large surface area would count??

http://www.biology-resources.com/frog.html

Unfortunately I didn't mention about surface area or things that basically make exchange more efficient, instead stating how as it got larger there were more of those structure X's (gills? :P) and how they were larger, so more oxygen could be filtered.

Damn.

Reply 1424

ResultInExcellence

1

Original post by holly12345

Hi

I got B1: 86UMS B2: 92UMS and ISA: 47/50

What do you think I need to get in B3 to get an a* overall?
Thanks :smile:

Perhaps slightly higher than 82! Max 85 I would say!

Reply 1425

Comp_uter15776

Original post by bbadonde2

Accidentally divided by 180, how many marks was it? Think it was 2?

Yeah. You may get one for your answer if it's E.C.F (error carried forward).

Reply 1426

1996smpam

Original post by Barlow

Why did you take away 30minutes from 180?

Because we had to work out the remaining loss of water from the leaf and the first 30 minutes had already been done, the 7 mg per minute.

Reply 1427

Skez0

2

Original post by 1996smpam

It is not even funny how bad i did on that test, my mind just went blank and i started to panic. I think there is a high chance i won't get any marks on the last 4 pages; which is annoying as when I came out, i remembered and could explain the answers to my friend. My hope for an A overall has gone out the window.

Sorry for the long post.

I feel the same. I got an A in Biology in the mocks. Both the Unit 1 and 2 papers we sat today felt really, really hard. The paper made you label and name so many things instead of asking other questions which normally appear.

I could of achieved so much more. I felt I needed 10 more minutes on each paper to get the grades I wanted. In the last pages I only had 5 minutes.

So many things which I had revised didn't appear at all.

Reply 1428

bbadonde2

4

Original post by Comp_uter15776

Unfortunately I didn't mention about surface area or things that basically make exchange more efficient, instead stating how as it got larger there were more of those structure X's (gills? :P) and how they were larger, so more oxygen could be filtered.

Damn.

You'd still get a mark for that!

Reply 1429

sansastark

The tadpole question? It seems loads more obvious now but in the exam I had no idea and started talking about the fact it had eyes and I just feel so stupid :s ugh

At least I managed to finish the paper (just) and the rest of it wasn't bad at all! (although no kidney/heart transplant stuff :c) The six marker was a gift!

I hope everyone else feels good about it! Good luck for Chemistry and Physics next week!

Reply 1430

Comp_uter15776

Original post by bbadonde2

You'd still get a mark for that!

A minor consolidation perhaps xD I'm a perfectionist! Ah well... dreams of A* perhaps slowly fading away :biggrin:

Wbu?

Reply 1431

bbadonde2

4

Original post by ResultInExcellence

Perhaps slightly higher than 82! Max 85 I would say!

Worked out you need 88 UMS for A*

Reply 1432

laylarose

14

Original post by holly12345

Hi

I got B1: 86UMS B2: 92UMS and ISA: 47/50

What do you think I need to get in B3 to get an a* overall?
Thanks :smile:

You need 360/400 UMS to get an A*.

Assuming 47 is 94 UMS then

94+86+92 = 272 UMS gained

360-272= 88

You need 88 UMS in this exam :smile:

Reply 1433

Skez0

2

Original post by Comp_uter15776

Unfortunately I didn't mention about surface area or things that basically make exchange more efficient, instead stating how as it got larger there were more of those structure X's (gills? :P) and how they were larger, so more oxygen could be filtered.

Damn.

I don't suppose talking about how the tadpoles grew eyes and a tail would get me any marks for sight and feeling surfaces?

Reply 1434

Barlow

10

Original post by bbadonde2

Accidentally divided by 180, how many marks was it? Think it was 2?

Daymn, done the same :frown:

Reply 1435

holly12345

Original post by ResultInExcellence

Perhaps slightly higher than 82! Max 85 I would say!

Okay thank you! :smile:

Reply 1436

bbadonde2

4

The fact is that most people won't get A*'s, even if you get like 84, 93 and 88 so far you need like 90 something for an A*. Science is one of the hardest subjects to get an A* in