26. In some cases involying bacteriophages, the viral DNA will insert itself into the bacterialDNA. Which of the following statements does not correctly describe this type of insertion?A) The inserted viral DNA is referred to as a prophage.B) The inserted viral DNA can leave the bacterial DNA.C) The inserted viral DNA is a part of the lysogenic cycle of replication.D) The inserted viral DNA can never leave the bacterial DNA and enter the lytic cycle.

Answered: 26. In some cases involving…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question

26. In some cases involying bacteriophages, the viral DNA will insert itself into the bacterial
DNA. Which of the following statements does not correctly describe this type of insertion?
A) The inserted viral DNA is referred to as a prophage.
B) The inserted viral DNA can leave the bacterial DNA.
C) The inserted viral DNA is a part of the lysogenic cycle of replication.
D) The inserted viral DNA can never leave the bacterial DNA and enter the lytic cycle.

Expert Solution

Step 1

A bacteriophage is a bacteria-infecting virus. A bacteriophage is a virus that is made up of DNA or RNA and is encased in a protein shell and is unable to move out. The viral DNA is protected by the protein shell, also known as the capsid. Some bacteriophages, such as the E.coli-infecting T4 bacteriophage, contain a protein tail made up of fibres that helps the virus connect to its host. The use of bacteriophages was crucial in determining that viruses have two basic life cycles: the lytic and lysogenic cycles.