What is the difference between a viral lytic cycle and a viral lysogenic cycle? What will be an ideal response?
In a lytic infection the virus destroys the host cell. The virus takes over the host cell’s metabolism and
forces the host cell to replicate viral particles. Lytic infections result in cell lysis and death.
In lysogenic infections, temperate viruses integrate into the host DNA. The integrated virus is called a
provirus. When the bacterial DNA replicates, the provirus DNA replicates with the host cell genome.
Temperate viruses revert to lyic cycles under stress conditions
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Dilation of a precapillary sphincter ____ blood flow through the capillary bed
Fill in the blank(s) with the appropriate word(s).
Nucleic acids are long polymers of repeating subunits called ________.
Fill in the blank(s) with the appropriate word(s).
A farmer produces a variety of apple with deep pink flesh by selectively crossbreeding apples with pinkish hues. This is an example of
A) convergent evolution. B) natural selection. C) artificial mutation. D) artificial selection. E) inheritance of acquired characteristics.
Given the loss of childbearing ability and negative health effects associated with menopause, there is cause to question why it exists given that evolution usually selects against most negative health effects and reduced fertility. Appraise and compare
the two possible explanations covered in this section. What will be an ideal response?