Without an enzyme, the reaction requires activation energy.

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

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes