Compare a virus to a unicellular organism.(1 point) Responses Viruses need energy; unicellular organisms do not need energy. Viruses need energy; unicellular organisms do not need energy. Viruses reproduce through asexual reproduction; unicellular organisms need a host cell. Viruses reproduce through asexual reproduction; unicellular organisms need a host cell. Neither unicellular organisms nor viruses respond to stimuli. Neither unicellular organisms nor viruses respond to stimuli. Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat. Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
Correct response: Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
What is a Virus Quick Check 3 of 53 of 5 Items Question Summarize the lytic cycle.(1 point) Responses A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell. A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell. The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself. The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself. A virus copies its genetic material and then splits its cell membranes in half to form identical viruses. A virus copies its genetic material and then splits its cell membranes in half to form identical viruses. A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells. A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
Correct response: A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
Differentiate between the lysogenic and lytic cycles.(1 point) Responses The virus injects DNA into the host cell during the lysogenic cycle. The virus injects DNA into the host cell during the lysogenic cycle. The host cell is destroyed during the lytic cycle. The host cell is destroyed during the lytic cycle. The host cell copies its own DNA during the lytic cycle. The host cell copies its own DNA during the lytic cycle. Viral proteins are synthesized during the lysogenic cycle. Viral proteins are synthesized during the lysogenic cycle.
Correct response: The virus injects DNA into the host cell during the lysogenic cycle.
Incorrect responses: The host cell is destroyed during the lytic cycle.
The host cell copies its own DNA during the lytic cycle.
Viral proteins are synthesized during the lysogenic cycle.
These responses do not accurately differentiate between the lysogenic and lytic cycles.
Why do doctors recommend people get the flu vaccine every year rather than every few years?(1 point) Responses They should get the flu vaccine because their bodies already have a resistance. They should get the flu vaccine because their bodies already have a resistance. They should get the flu vaccine because viruses do not mutate. They should get the flu vaccine because viruses do not mutate. They should get the flu vaccine because viruses mutate. They should get the flu vaccine because viruses mutate. They should get the flu vaccine because their bodies do not build up resistance. They should get the flu vaccine because their bodies do not build up resistance.
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