Which of the following occurs at the replication fork? The region where parental strands of DNA are unwound by the enzyme helicase and binding proteins bind to the unpaired DNA to keep them separate
The region where the enzyme topoisomerase untwists the semiconservative templates to begin replication again
The region where the enzyme helicase helps to relieve strain on the DNA template and rejoins the DNA strands
The region where the template DNA strands are unwound by the enzyme topoisomerase to relieve strain and rejoin the DNA strands

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)