Gas a second step in thenerd-proposal, wouldbe fiancé needs to obtain dna fragments that are the right size to make up the letters spelling out "will you marry me? " how would they do that? a)use restriction enzymes to cut the dna at specific sequence sites. b)waitfor helicase to unzip the genes. c)use dna ligase to stick together the okazaki fragments. d)alter the reading frame of the mrna.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. threat method number of species that benefit number of years to see benefit habitat fragmentation reforestation 450 8 introduced prey species biological augmentation 150 2 which statement is an accurate explanation of the information in the table? a. biological augmentation would benefit only a few species because it is typically not very effective. b. biological augmentation would take less time to be effective because it targets the majority of prey species. c. reforestation would take the longest time to be effective because trees take several years to grow. d. reforestation would not benefit many species because most forest species live on the ground.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?