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OCR 21st Century Science B1,2&3 (13/5/14)

HeisenbergWW

How are you feeling about the exam?

I'm feeling pretty good about it! :smile:

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Reply 1

gary14

Is there any mark scheme for this paper as I just did the exam and I feel pretty good

Reply 2

visahan98

Did you lot do higher

Reply 3

visahan98

I felt nervous, but then the paper was not that bad . What did you guys get for the carbon cycle?
And the Last question about the fox and the rabbit :biggrin:

Reply 4

Om1

I did this exam today too. It was ok. I struggled on the Petri dish question, heart disease and the first question about cell sampling. How did you find it?

Reply 5

lappy486

I think I put AED for the labelling, no idea what Detritivores were, and carbon is lost by respiration and excretion so the fox doesn't get all the rabbit's carbon.

Reply 6

zebra249

What did you guess to be the amount of extinction?

Posted from TSR Mobile

Reply 7

lyricalvibe

Original post by zebra249

What did you guess to be the amount of extinction?

Posted from TSR Mobile

Initially 7000 but I thought they'd probably put the answer as a range so I put 6000

Reply 8

HeisenbergWW

Original post by g.l.a.4559

i felt really really nervous about it last night but it didn't go as bad as i thought it would :smile:

i thought the 6 markers weren't too bad. what did you think of it?

It wen't really well! :smile:

Reply 9

krishanj

Original post by lyricalvibe

Initially 7000 but I thought they'd probably put the answer as a range so I put 6000

ah i put like 40,000....... i followed the line up...... For the "why does the fitness instructor think the resting heart rate does not show who is fittest..." what did you guys put?

Reply 10

lyricalvibe

Original post by krishanj

ah i put like 40,000....... i followed the line up...... For the "why does the fitness instructor think the resting heart rate does not show who is fittest..." what did you guys put?

It never said other factors were controlled so I said maybe they weren't all at rest but that question was be, it could have been to age aswell but I thought the question was more of an idea's about science question. I did a little arrow for the examiner saying the question wad vague because it annoyed Me :P what did you put?

Reply 11

Om1

Original post by krishanj

ah i put like 40,000....... i followed the line up......For the "why does the fitness instructor think the resting heart rate does not show who is fittest..." what did you guys put?

I put 40,000 too. I put something about their ages but it was vague

Reply 12

krishanj

Original post by lyricalvibe

I just put they could have different heart rates, and it could be affected by other things like drugs etc...although for alternatives i put he could look at blood pressure and see how long it takes for them to return to rest rate.

Reply 13

Magnesium

Original post by lappy486

I think I put AED for the labelling, no idea what Detritivores were, and carbon is lost by respiration and excretion so the fox doesn't get all the rabbit's carbon.

Detritivores were the decomposers in the carbon cycle :smile:

Pretty sneaky though since i'm sure it wasn't in the revision guide :confused:

Reply 14

samaugust323

Overall, I found it quite an easy paper... Fairly confident for the chemistry one on 15/05/14 now. The questions which really confused me was

1) continue the line to show number of extinctions

2) bacteria 6 mark question

I found it quite disappointing that only genetic testing came up in the B1 section, and nothing to do with the immune system in B2 :frown:

What did you get in the Punnett square question? There was quite a lot of maths questions.

What do you think will come up in chemistry on Thursday?

Reply 15

romaiseb

Original post by samaugust323

What did you get in the Punnett square question? There was quite a lot of maths questions.

I got 25%

Reply 16

samaugust323

There did seem to be quite a lot of confusion in my school about whether it was 25% or 75%

Reply 17

Magnesium

Original post by samaugust323

There did seem to be quite a lot of confusion in my school about whether it was 25% or 75%

It was definitely 25% because they were both carriers e.g both Ff so only on of the squares was ff (sufferer) :P what did you get?

Reply 18

JamesPlumeridge

Spent ages learning homeostasis and it didn't even come up :mad:

Reply 19

lappy486

Original post by Magnesium

Detritivores were the decomposers in the carbon cycle :smile:

Pretty sneaky though since i'm sure it wasn't in the revision guide :confused:

In the CGP Revision guides it's not even on the page for the Carbon Cycle, it's listed under the section for the Nitrogen Cycle instead, and even then Detritivores is only mentioned in brackets.