What are the potential advantages of lysogeny compared to lysis for a temperate virus?
What will be an ideal response?
Answer: Answers could vary, but one idea is that lysogeny allows the virus to increase in numbers with a host without killing the host. This would be advantageous if there are few host cells present (i.e. the host population is small). Lytic viruses or lytic cycles expel viruses that then must attach to a new host to proliferate. If the viral host population is small, a lytic cycle might kill or wipe out the entire host population and prevent further viral replication.
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Encapsulated strains of Streptococcus pneumoniae are particularly pathogenic, because they
A) produce exotoxin A. B) produce exotoxin B. C) are potentially very invasive. D) produce M protein surface antigens.
A person who is homozygous recessive for this defective gene often suffers from severe
pancreatitis, which can be deadly. A treatment that replaces this gene is __________.
a. gene therapy b. genomics c. therapeutic cloning d. a genetic marker
An organized group of specialized cells is called a(n) organ
Indicate whether the statement is true or false.
A protein-protein interaction is responsible for an illness in infants. The most accurate mechanisms used to assess the proteins involved include (select all that apply)A) isolation of the DNA sequence for the genes encoding the proteins.B) insertion of the genes encoding the proteins into yeast using bait and prey vectors.C) addition of fusion proteins from the infants to yeast to induce a color change response.D) the identification of active protein interactions by the expression of reporter genes.
What will be an ideal response?