Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter

    This is part of the specification:

    what does this mean??
    1. describe how plasmids and viruses can act as vectors, which take up piecesof DNA, then insert this recombinant DNA into other cells

    Look here? http://www.thestudentroom.co.uk/show....php?t=3933981

    Im studying this at the moment! Im sure I wont be able to give you the best answer but here it goes!

    A vector takes pieces of DNA and inserts them into other cells using restriction enzymes (To remove the gene from the DNA) and other enzymes to 'glue' their own DNA back in. In a viruses case it would be a gene which would cause a cell to mass produce more viruses. an example of this in genetic modification is the modification of a bacterium plasmid (Basically just a floating nucleus in a bacteria) and the insertion of a human insulin gene. So the bacteria produces insulin which can be used to treat diabetes.

    So to summarize a virus can act as a vector which can go to a 'victim cell' use restriction enzymes to extract a DNA at a specific area and a ligase enzyme to join up the DNA with its own variation.Tricky topic, took me a while to understand it hope this helps! As I said I am also a IGCSE student so probably not the best answer out there feel free to respond if I haven't made it clear
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Would you like to hibernate through the winter months?
    Useful resources

    Study tools


    Essay expert

    Learn to write like a pro with our ultimate essay guide.

    Thinking about uni already?

    Thinking about uni already?

    See where you can apply with our uni match tool

    Student chat

    Ask a question

    Chat to other GCSE students and get your study questions answered.


    Make study resources

    Create all the resources you need to get the grades.


    Create your own Study Plan

    Organise all your homework and exams so you never miss another deadline.

    Resources by subject

    From flashcards to mind maps; there's everything you need for all of your GCSE subjects.


    Find past papers

    100s of GCSE past papers for all your subjects at your fingertips.

    Help out other students

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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

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