Which enzyme unwinds and separates the two strands of the DNA double helix?

helicase

sucrose

cellulose

Larry goes to the doctor complaining that he can't see the right side of the visual field with either eye. where in the visual signal-processing pathway is larry's problem occurring?

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?