Criado por Taher Miah
mais de 6 anos atrás
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Questão | Responda |
Most prokaryotes have haploid or diploid cells? | Haploid |
What is their cell cycle called? | Binary fission |
Prokaryotes non-meiotic processes for shuffling genes: | 1)Conjugation 2)Transduction 3)Transformation |
Plasmid contains ori sequence what does it do? | oriP recruits host cell enzymes to replicate plasmid DNA |
R plasmids? | Carry genes that make it resistant to multiple antibiotics |
Example of this? | R plasmid pG01 found in Staphylococcus strains from hospital infections |
How are plasmid genes transferred from chromosome to plasmids? | Transposable elements |
What are they? | Mobile DNA sequences, jump from one location within DNA molecule to another |
Insertion sequences (IS)= | Simplest transposable elements |
Example of conjugation plasmid= | E.Coli F plasmid |
What produces Pilus on prokaryotes? | Tra - genes on plasmid |
Conjugation= | •Plasmid containing cell •Grabs hold of another cell not containing plasmid •Infects it with copy of plasmid =2 cells with same plasmid |
Why is pG01 dangerous? | Can transfer antibiotic resistance between populations of Staphylococcus cells |
Transposase enzyme= | Can take chunk of DNA with it |
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