7) Cold sores are caused by the herpes simplex virus type 1. A company that wants to develop
antiviral drugs would ask a research immunologist to study
A the mechanism used by the virus to infect cells
3 how closely related the virus is to cold viruses
c the metabolism of the virus
meiosts in the virus
8)
Four different types of cells are shown

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f