Turn on thread page Beta
    Offline

    10
    ReputationRep:
    Can someone explain to me how L-dopa works? :/
    Thanks in advance!
    Offline

    0
    ReputationRep:
    (Original post by neom)
    Can someone explain to me how L-dopa works? :/
    Thanks in advance!
    it is converted into dopamine within the brain and can be used pretty much as a dopamine substitute they cant put normal dopamine into the brain because it cant pass through but L-dopa can.
    Offline

    0
    ReputationRep:
    (Original post by neom)
    Can someone explain to me how L-dopa works? :/
    Thanks in advance!
    L-dopa is able to enter the brain, where it changes into dopamine. This leads to an increase in dopamine levels, resulting in more nerve impulses being transmitted successful, leading to more control over movement
    something along those lines covers the main points
    Offline

    2
    ReputationRep:
    (Original post by neom)
    Can someone explain to me how L-dopa works? :/
    Thanks in advance!
    its a precursor for dopamine cells. since the dopamine cells cant cross the blood-brain barrier, l-dopa is used as it can cross it with the aim of increasing dopamine levels in the brain and relieving symptoms
    Offline

    2
    ReputationRep:
    (Original post by rabz*)
    This article is freaking me out!
    How could DNA methylation alter gene expression?!?!
    i think the methyl group binds to nucleotides and prevents them being expressed
    Offline

    0
    ReputationRep:
    (Original post by EmilyElectrik)
    = empty air - mark on kymograph
    = fill air = mark on kymograph
    thanks so much haha this was stressing me out and you make it sound like a piece of cake
    Offline

    0
    ReputationRep:
    quick question do you get a copy of the article in the exam??? D:
    Offline

    0
    ReputationRep:
    (Original post by High As A Kite)
    i think the methyl group binds to nucleotides and prevents them being expressed
    Thank Youuuu!
    Offline

    0
    ReputationRep:
    (Original post by fiza_1)
    what are "Epigenetic changes"?
    My teacher told me they were environmental factors


    This was posted from The Student Room's iPhone/iPad App
    Offline

    0
    ReputationRep:
    (Original post by priyapatel)
    quick question do you get a copy of the article in the exam??? D:
    Yup you do


    This was posted from The Student Room's iPhone/iPad App
    Offline

    0
    ReputationRep:
    (Original post by priyapatel)
    quick question do you get a copy of the article in the exam??? D:
    Yes, it comes as an insert with the exam paper
    Offline

    0
    ReputationRep:
    (Original post by kanchu)
    My teacher told me they were environmental factors


    This was posted from The Student Room's iPhone/iPad App
    Mine told me they were where the DNA base sequence remains the same, but chanhges are made to other parts of the DNA structure:confused:
    Offline

    0
    ReputationRep:
    (Original post by kanchu)
    My teacher told me they were environmental factors


    This was posted from The Student Room's iPhone/iPad App
    heyy really ? err i was just researching coz no one had replied and i found that its changes in the gene expression due to the change in DNA structure like DNA Methylation ......
    is this correct ?
    Offline

    0
    ReputationRep:
    Yeah i think so dude^


    This was posted from The Student Room's iPhone/iPad App
    Offline

    0
    ReputationRep:
    im reading synoptic stuff, but i really dont see how xylem cells and that is gonna come up? im confused about what to revise? lol
    Offline

    0
    ReputationRep:
    Paragraph 45 mentions the protein 'interlukin-6' which is an anti-inflammatory protein. Suggest the impact of anorexia on the immune system.
    Offline

    0
    ReputationRep:
    (Original post by PlatypusPigeon)
    Can someone explain spirometers to me and how to answer spirometer question. I know things like calibration and breath air in and out and there's a needle and things like that but actual questions like calculating stroke volume, I am SO CONFUSED.
    stroke volume = cardiac output/heart rate I think, after re-arranging
    Offline

    19
    ReputationRep:
    what is the difference in plant hormones and human hormones?
    Offline

    0
    ReputationRep:
    (Original post by rabz*)
    Paragraph 45 mentions the protein 'interlukin-6' which is an anti-inflammatory protein. Suggest the impact of anorexia on the immune system.
    would weaken it, active immunity will not be strong. antigens will be able to attack the body more succesfully since inflammatory responses wont be very effective

    i dunno im just gassing about anything i can remember lol
    Offline

    0
    ReputationRep:
    (Original post by del1rious)
    what is the difference in plant hormones and human hormones?
    plant hormones are slower, human hormones respond to internal stimuli while plants to external (?), human transported in blood while plant obviously doesnt have blood lol so is transported through phloem or some****
 
 
 
The home of Results and Clearing

3,209

people online now

1,567,000

students helped last year

University open days

  1. London Metropolitan University
    Undergraduate Open Day Undergraduate
    Sat, 18 Aug '18
  2. Edge Hill University
    All Faculties Undergraduate
    Sat, 18 Aug '18
  3. Bournemouth University
    Clearing Open Day Undergraduate
    Sat, 18 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.