Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    can someone please explain to me what oyu need to know for biog unit 7 aqa b
    Offline

    0
    ReputationRep:
    Aseptic techniques

    Work near a bunsen burner for updraught. The bunsen pushes air upwards so spores don't fall into petri dish.
    Flame the pipette- causing air to expand out of the pipette therefore bacteria not drawn in.
    Keep petri dish at 45°. To prevent bacterial and fungal spores from falling into dish.

    Hope this helps.
 
 
 
Turn on thread page Beta
Updated: June 23, 2005
The home of Results and Clearing

2,846

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.