Turn on thread page Beta

AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011 watch

  • View Poll Results: Are you resitting this unit?
    YES!
    12.91%
    NO!
    87.09%

    Offline

    0
    ReputationRep:
    (Original post by UCAS.LOVER)
    i talked about this too. SCORREE!
    yeahhh boyyyyy!
    i really want 120UMS+ on this!!
    Offline

    0
    ReputationRep:
    (Original post by danny1312)
    Couldn't agree more to be honest with you, thought i was good at biology before this. Probably goodbye Newcastle Dentistry for us then
    i know :'( i thought chemistry would be the subject to make me miss my grades! i need bang on a B in this paper to get an A in biology but ahh im so worried i've massively ****ed up! how did you find it??
    Offline

    0
    ReputationRep:
    (Original post by -Iffy-)
    gah! I can't stop thinking about that pupa question and how i royally messed it up, damn you time restrictions. Btw people who did cycles for the 25 mark essay, what breadth of knowledge did you add in?
    i did cardiac, mitosis, N cycle, C cycle, predator-prey, calvin, krebs, menstrual and synapses.. then ran out of time! aaah
    Offline

    0
    ReputationRep:
    I did the essay question for cycles, and it seems many people spoke about cycles but very few answered the question. Essentially it was 'discuss cycles in which a product from cycle A starts cycle B'.
    Offline

    0
    ReputationRep:
    (Original post by MessyRoom)
    I did the essay question for cycles, and it seems many people spoke about cycles but very few answered the question. Essentially it was 'discuss cycles in which a product from cycle A starts cycle B'.
    I think you're wrong there :P From what I remember it was something like this: "cycles are a series of processes in which the product A is also the reactant for the cycle. Discuss cycles in biology." It was obviously worded differently, but that's the general idea. Hence the question just said discuss cycles and the first sentence was just extra info...
    Offline

    0
    ReputationRep:
    (Original post by platty1907)
    I think you're wrong there :P From what I remember it was something like this: "cycles are a series of processes in which the product A is also the reactant for the cycle. Discuss cycles in biology." It was obviously worded differently, but that's the general idea. Hence the question just said discuss cycles and the first sentence was just extra info...
    Ah yesh. Well I went down the A to B, B to C route. Digestion, absorption, respiration, homeostasis.

    Then I realised I had nothing on plants, so I jammed in chemical fertiliser->leeching.
    Offline

    12
    ReputationRep:
    (Original post by MessyRoom)
    I did the essay question for cycles, and it seems many people spoke about cycles but very few answered the question. Essentially it was 'discuss cycles in which a product from cycle A starts cycle B'.
    So if we look at what people have put:
    Respiration - the products are reused in later stages or at the start
    Nitrogen Cycle - nitrogen is reused
    Carbon Cycle - carbon is reused
    Cell Cycle - products from replication are used for further replication.. Counts as a cycle :]
    menstrual cycle - Corpus Leuteum from FSH release stimulates another release and then a degeneration stops the chemical...
    I think that counts
    And finally photosynthesis. Light dependent replaces electrons lost in initial, carries NADPH to the light independent as well as ATP.


    So what out of them aren't cycles?
    Offline

    1
    ReputationRep:
    (Original post by MessyRoom)
    Ah yesh. Well I went down the A to B, B to C route. Digestion, absorption, respiration, homeostasis.

    Then I realised I had nothing on plants, so I jammed in chemical fertiliser->leeching.
    I wouldn't call digestion a cycle :/
    Offline

    1
    ReputationRep:
    (Original post by SarahTM)
    So if we look at what people have put:
    Respiration - the products are reused in later stages or at the start
    Nitrogen Cycle - nitrogen is reused
    Carbon Cycle - carbon is reused
    Cell Cycle - products from replication are used for further replication.. Counts as a cycle :]
    menstrual cycle - Corpus Leuteum from FSH release stimulates another release and then a degeneration stops the chemical...
    I think that counts
    And finally photosynthesis. Light dependent replaces electrons lost in initial, carries NADPH to the light independent as well as ATP.


    So what out of them aren't cycles?
    They are all cycles
    Offline

    0
    ReputationRep:
    (Original post by MessyRoom)
    I did the essay question for cycles, and it seems many people spoke about cycles but very few answered the question. Essentially it was 'discuss cycles in which a product from cycle A starts cycle B'.
    A cycle is just that. So any cycle you talked about would fit that criteria. The essay itself just said 'Write an essay about cycles in Biology.' With some definition of a cycle beforehand.
    I guess so idiots didn't write about any process thinking it was a cycle.
    Offline

    0
    ReputationRep:
    (Original post by MessyRoom)
    Ah yesh. Well I went down the A to B, B to C route. Digestion, absorption, respiration, homeostasis.

    Then I realised I had nothing on plants, so I jammed in chemical fertiliser->leeching.
    I hope by respiration you just mean kreb's. I guess you could link H20 made at the end to H20 in photolysis, but that's one damn big cycle.
    Offline

    12
    ReputationRep:
    (Original post by l4ith)
    They are all cycles
    And they're the kind of things people put? So most people did actually answer the question :')
    Offline

    0
    ReputationRep:
    (Original post by Davey-h7)
    I hope by respiration you just mean kreb's. I guess you could link H20 made at the end to H20 in photolysis, but that's one damn big cycle.
    yeah, i did glycolysis + krebs for the co2 into blood. i was kinda vague on glyco, just stated the move from 6 carbon glucose to 3 carbon pyruvate through redox reactions and oxidative phosphorylation.
    Offline

    12
    ReputationRep:
    (Original post by Davey-h7)
    I hope by respiration you just mean kreb's. I guess you could link H20 made at the end to H20 in photolysis, but that's one damn big cycle.
    I linked all of respiration...
    NADH to ETC,
    ATP to glycolysis,
    Pyruvate from glycolysis to link reaction etc...
    Offline

    0
    ReputationRep:
    i think people are clutching at straws with some of these cycles. didn't the question define a cycle as something where the product of the cycle is the start of it?? some people's cycles seem a bit more linear than cyclic
    Offline

    0
    ReputationRep:
    (Original post by my_username_rocks)
    i think people are clutching at straws with some of these cycles. didn't the question define a cycle as something where the product of the cycle is the start of it?? some people's cycles seem a bit more linear than cyclic
    It stated cycles are processes where the end product of one is the starting point of another.
    Offline

    0
    ReputationRep:
    (Original post by Yellowducks8)
    Hey i'm reli worried I messed up my essay and wanted to know what people think - btw you can be brutally honest.

    I chose the DNA and its uses in science and technology and talked about;

    1) Classification and using DNA hybridisation to find how similar or different organisms are
    2) Then talked about DNA fingerprinting and using polymerase chain reaction
    3) then i talked about meiosis and how understanding how variation is important is used for conservation (okay i know this is a stretch).


    and thats about it

    in vivo/in vitro cloning
    genetic enggineering
    restriction mapping
    sequencing - sort of linked in protein synthesis, some genetic diseases etc talked quite a bit about diseases i think- sort of linked in siRNA too how that can be used to stop translation to cure diseases caused by dodgy genes
    PCR
    finger printing - paternity tests, forensics, selective breeding
    GM crops - resistance, high yield
    resistance- MRSA - mutations - CF - gene therapy
    im not even sure how i linked some of the things to be honest but it made sense at the time
    dunno why but...totipotency, switching on and off of genes - oncogenes
    then said a bit about how some guys in america managed to take skin cells on mice, make it a stem cell then used it to cure the mice's sickle cell anemia
    and also something about using algae as fuel

    (the questions earlier on were horrible so i finished super early, hope i havent put too many irrelevant things )

    i knew ther was something i was forgetting...the word hybridisation refused to come to my mind

    ps- sorry if that was too brutal
    Offline

    2
    ReputationRep:
    (Original post by my_username_rocks)
    i think people are clutching at straws with some of these cycles. didn't the question define a cycle as something where the product of the cycle is the start of it?? some people's cycles seem a bit more linear than cyclic
    Which ones are you referring to?
    Offline

    0
    ReputationRep:
    (Original post by grace=D)
    in vivo/in vitro cloning
    genetic enggineering
    restriction mapping
    sequencing - sort of linked in protein synthesis, some genetic diseases etc talked quite a bit about diseases i think- sort of linked in siRNA too how that can be used to stop translation to cure diseases caused by dodgy genes
    PCR
    finger printing - paternity tests, forensics, selective breeding
    GM crops - resistance, high yield
    resistance- MRSA - mutations - CF - gene therapy
    im not even sure how i linked some of the things to be honest but it made sense at the time
    dunno why but...totipotency, switching on and off of genes - oncogenes
    then said a bit about how some guys in america managed to take skin cells on mice, make it a stem cell then used it to cure the mice's sickle cell anemia
    and also something about using algae as fuel

    (the questions earlier on were horrible so i finished super early, hope i havent put too many irrelevant things )

    i knew ther was something i was forgetting...the word hybridisation refused to come to my mind

    ps- sorry if that was too brutal
    How much did you write? It's generally better to focus on three to five different topics and go into them in detail, than it is to write a short amount on 10 different topics. Unless you did like over 6 pages, but that's a bit pointless as you can get full marks with 3 or 4 sides. Personally, I did PCR, genetic screening, genetic counselling, somatic gene therapy, and DNA fingerprinting. For the disease one last year which was practice, I wrote about the same amount as I did in this essay (3 sides) and wrote about four different causes, and got 22/25, so I'm expecting at least 15 this time.
    Offline

    8
    ReputationRep:
    literally ****ed this paper up big time.
    i think ive done good in my essay though, hopefully i'll get upto 20 marks for that.

    Then about 20 marks scattered around the paper if im lucky. Haha. :/
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: June 22, 2016
The home of Results and Clearing

3,104

people online now

1,567,000

students helped last year

University open days

  1. Sheffield Hallam University
    City Campus Undergraduate
    Tue, 21 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Wed, 22 Aug '18
  3. University of Buckingham
    Postgraduate Open Evening Postgraduate
    Thu, 23 Aug '18
Poll
A-level students - how do you feel about your results?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.