Multiple Choice
Some bacterial viruses (lysogenic phages) carry viral DNA that acts like an episome. When a bacterial cell that is infected by a lysogenic phage replicates, what happens to the viral DNA?
7. Prokaryotic Cell Structures & Functions
Introduction to Bacterial Plasmids
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Episomes differ from normal bacterial plasmids because…
A
Episomes carry genes that are not vital to a bacterial cell's life.
B
Episomes do not replicate independently of the bacterial chromosome.
C
Episomes are replicated by the same DNA machinery that replicated the bacterial chromosome.
D
Episomes are integrated into the bacterial chromosome.
E
A and C.
F
B and D.
Verified step by step guidance1
Understand the definition of episomes: Episomes are a type of plasmid that can integrate into the bacterial chromosome and replicate as part of it.
Compare episomes with normal plasmids: Normal plasmids typically replicate independently of the bacterial chromosome, whereas episomes do not.
Recognize the replication mechanism: Episomes are replicated using the same DNA machinery as the bacterial chromosome, unlike normal plasmids which have their own replication mechanisms.
Identify integration into the chromosome: Episomes can integrate into the bacterial chromosome, which is a key distinguishing feature from normal plasmids.
Evaluate the options: Based on the characteristics of episomes, the correct options are those that highlight their integration into the chromosome and their replication mechanism, which are B and D.
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