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ocr 21st century biology

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What did everyone get for the use of products from anaerobic respiration ?they mentioned alcohol you had to mention another

It can produce biogas for fuel (at least that's what I put)

Reply 41

Livy1234

Hi, I need to get a B to take a level Biology, does anyone know what te grade boundaries are for that on B4, 5, 6 paper? Also I for the ratio question right but didn't simplify it! I also wrote about stem cells from the umbilical chord being more useful as the were unspecialised, whereas the stem cells in bone marrow had started to specialise. I put bioethanol as a product of anaerobic respiration. Anyone know whether these answers are fine? :smile:

(edited 7 years ago)

Reply 42

shanz123

Original post by JennLousie

I put umbilical cord because that contains embryonic stem cells which can turn into any type of cell, whereas with bone marrow you're limited to blood cells

how many marks was the question?

Reply 43

g3ob

What do you think you'll need for an A*?

Reply 44

stormblazer999

What did you guys put for the Damaged Neuron 6-marker?

Reply 45

Katy0984

Original post by stormblazer999

What did you guys put for the Damaged Neuron 6-marker?

Spoke about how the myelin sheath became thinner which means slower response

Reply 46

stormblazer999

Original post by Katy0984

Spoke about how the myelin sheath became thinner which means slower response

Same here. Good to know.

Reply 47

Katy0984

Original post by stormblazer999

Same here. Good to know.

What did you get for the meiosis and mitosis which letters were they ?

Reply 48

Katy0984

Do you think biofuel would be accepted as an answer for uses of anaerobic respiration ?

Reply 49

stormblazer999

Original post by Katy0984

What did you get for the meiosis and mitosis which letters were they ?

I think I got A and B or either B and C,
I definitely got B (for meiosis I think? I can't really remember) and the other for Mitosis (the one that had the arrow directed to the development of the tests/ovaries).

Reply 50

Katy0984

Original post by stormblazer999

what did you get for the protein question about mitochondria or something it said what protein can be made don't exactly remember the question...

(edited 7 years ago)

Reply 51

stormblazer999

Original post by Katy0984

I got A for Meiosis because Meiosis produces the Gametes And I got C for Mitosis 😕but what did you get for the protein question about mitochondria or something it said what protein can be made don't exactly remember the question...

Oh yeah I just said that it would make proteins responsible for aerobic respiration and the enzymes associated with it, then I put the word 'functional' in brackets...

Reply 52

Katy0984

Original post by stormblazer999

Oh yeah I just said that it would make proteins responsible for aerobic respiration and the enzymes associated with it, then I put the word 'functional' in brackets...

Yeah same I mentioned enzymes

Reply 53

rishannp

I put umbilical due to unspecialised stem cells from the embryo being present in the chord, this means anything can be grown provided the right genes are activated

Reply 54

stormblazer999

Original post by rishannp

I put umbilical due to unspecialised stem cells from the embryo being present in the chord, this means anything can be grown provided the right genes are activated

Yeah I said that as well

Reply 55

rishannp

Original post by Katy0984

Do you think biofuel would be accepted as an answer for uses of anaerobic respiration ?

100% sure thats right and production of bread

Reply 56

stormblazer999

Original post by rishannp

100% sure thats right and production of bread

What if you just wrote 'Biogas' ?

Reply 57

rishannp

Original post by stormblazer999

What if you just wrote 'Biogas' ?

yup, thats correct

Reply 58

abbigm1

What did everyone put for why stem cells of mice are not used in humans?
I said healthy mice are diseased (according to the text that was above) but I know this is wrong lol