Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

16. Microbial Genetics

Conjugation: Hfr & F' Cells

Microbiology

16. Microbial Genetics

Conjugation: Hfr & F' Cells

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Multiple Choice

Which of the following statements about bacterial cells and plasmids is false?

F- cells do not possess any form of a plasmid.

F+ cells possess an F plasmid which is separate from the bacterial chromosome.

Hfr cells possess a plasmid that replaces the bacterial chromosome entirely.

F' cells possess an F' plasmid which contains plasmid DNA and some bacterial chromosomal DNA.

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Verified step by step guidance

Understand the different types of bacterial cells involved in conjugation: F-, F+, Hfr, and F'. Each type has distinct characteristics related to plasmids.

F- cells are recipient cells in bacterial conjugation and do not possess the F plasmid. They can receive genetic material from F+ cells.

F+ cells contain the F plasmid, which is a separate circular DNA molecule from the bacterial chromosome. This plasmid allows them to initiate conjugation with F- cells.

Hfr cells have the F plasmid integrated into their bacterial chromosome, allowing them to transfer chromosomal genes to recipient cells during conjugation. The statement that Hfr cells possess a plasmid that replaces the bacterial chromosome entirely is false because the plasmid integrates into, but does not replace, the chromosome.

F' cells contain an F' plasmid, which is formed when the F plasmid excises from the bacterial chromosome and carries with it some chromosomal DNA. This allows for the transfer of both plasmid and chromosomal DNA during conjugation.