What did the hershey and chase experiment show about bacteriophages?

a. bacteriophages completely enter bacteria

b. bacteriophages inject nothing into bacteria

c. bacteriophages inject only dna into bacteria

d. bacteriophages inject only the protein coat into bacteria

The correct answer is A  bacteriophages inject only DNA into the bacteria.

Explanation:

Bacteriophages are a specific type of virus that infect bacteria.During the course of infection bacteriophage releases an enzyme known as lysozyme which creates a hole in the cell wall of the bacteria.

   After doing that(creating a hole) bacteriophage inject its DNA inside the bacterium.

   The injected DNA undergo gene expression by utilizing the gene expression machinery of bacteria which ultimately result in the formation of coat protein.The DNA is then packed within the coat protein to form progeny phages.The progeny phages then disrupt the cell wall and get released from the bacterium in search of a new host.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.