binary fisson, conjugation, transposons, transduction, transformation, plasmids, insertion sequences, dissemination of drug resistance in bacteria, genetic transfer in bacteria, theta replication, rolling circle replication

1. Describe: gene transfer b.stev

4. cell wall chromosome cell membrane theta replication growth of cell NEXT REPLICATION

5. new cell wall forms REPLICATED bacterial cells (two identical daughter cells)

6. This type of replication is known as: THETA REPLICATION a bi-directional motion DNA helix unwinds/ replicates / rewinds

7. cell F- cell F+ bacterial chromosome F plasmid bacteria join: pili transfer of F plasmid cell F+ transfer provides: COMPLEMENTARY DNA CONJUGATION

10. Transduction

11. SPECIALISED> prophage – the altered bacterial DNA performs BINARY FISSION that creates replicates though the replicates differ: ONE may produce virus cells OTHER creates defective virus cells that seek to perform the process of: generalised transduction (Pommerville J.C, 2004)

14. C C C T A A T T A G G G G G G A T T A A T C C C inverted sequence of repetitive bases: ability to move/ insert & disembark coded sequence of information TRANSPOSON

16. OVERUSE & MISUSE ENCOURAGES RESISTANT FORMS: 1968-71 > Guatemala ; 12,000 people died to a resistant form of: S.dysenteriae ANTIBIOTICS causes the sensitive cells to die, stimulates resistant cells: grow & to thrive increasing numbers HOSPITALS: care taken to prevent resistant strains overtaking the susceptible strains especially: E.Coli P.Aeruginosa S.Marcesens Proteus (Pommerville J.C, 2004)

18. Bibliography Campbell N. A, Reece J. B. (2005). Biology (7th ed.) . San Francisco: Benjamin Cummings Pommerville J.C. (2004). Alcamo’s – Fundamentals of Microbiology (7 th ed.). Massachusetts: Jones and Bartlett. Barnes S. N, Curtis H. (1989). Biology (5th ed.) . New York: Worth