Multiple Choice
A new pathogenic form of influenza A can emerge when __________.
17. Viruses
Viruses
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A phage that inserts itself into the host DNA is called __________.
A
a bud
B
a bacteriophage
C
semipermeable
D
a capsomere
E
lysogenic
Verified step by step guidance1
Understand the context: A phage is a type of virus that infects bacteria. It can have different life cycles, one of which involves integrating its genetic material into the host's DNA.
Identify the term: The process where a phage integrates its DNA into the host's genome is known as the lysogenic cycle. During this cycle, the phage DNA becomes a part of the host's DNA and can be replicated along with it.
Clarify the options: Review the given options to determine which one correctly describes a phage that integrates into the host DNA. The options provided are 'a bud', 'a bacteriophage', 'semipermeable', and 'a capsomere'.
Evaluate the options: 'A bud' refers to a form of asexual reproduction, 'semipermeable' describes a type of membrane, and 'a capsomere' is a protein subunit of a viral capsid. None of these relate to the integration of phage DNA into host DNA.
Conclude with the correct term: The correct term for a phage that inserts itself into the host DNA is 'lysogenic', which is not listed among the options but is provided as the correct answer.
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