Question

select all that apply
choose all characteristics of the transforming substance isolated by avery, macleod and mccarty.
the elemental composition of the substance was very similar to that of dna.
extracting dna from the substance did not affect its transforming ability.
dna - digesting enzymes destroyed its transforming ability.
rna - digesting enzymes destroyed its transforming ability.
protein - digesting enzymes did not affect its transforming ability.

Explanation:

Avery, MacLeod and McCarty's experiment showed that the transforming substance was DNA. The elemental composition was similar to DNA. DNA - digesting enzymes destroyed its transforming ability as they broke down DNA. Protein - digesting and RNA - digesting enzymes did not affect it as proteins and RNA were not the transforming principle. Extracting DNA would destroy its transforming ability as DNA was the active component.

Answer:

• The elemental composition of the substance was very similar to that of DNA.
• DNA - digesting enzymes destroyed its transforming ability.
• Protein - digesting enzymes did not affect its transforming ability.