Christopher is on a roller coaster. The roller coaster car slowly climbs to its highest peak and pauses before it begins its descent. As Christopher looks down, his heart starts to race. What part of his brain is responsible for this reaction?

Which of the following is characteristic of the lytic cycle? a) viral dna is incorporated into the host genome.b) the viral genome replicates without destroying the host.c) a large number of phages are released at a time.d) the virus—host relationship usually lasts for generations.