Question

Virtually every experiment performed by biologists builds on knowledge provided by earlier experiments.

Of what significance to Avery and his colleagues was the finding (made in 1932 by J. L. Alloway) that the same kind of transformation of R cells into S cells that Griffith observed to occur in mice could also be demonstrated in culture with isolated pneumococcus cells?

A) It made their experiment possible, because it allowed them to assay various fractions of R cells for transforming activity in culture.

B) It allowed them to analyze various fractions of S cells before their transformation into R cells to find out whether they demonstrate activity in culture.

C) It made their experiment possible, because it allowed them to assay various fractions of S cells for transforming activity in culture.

D) It allowed them to analyze various fractions of R cells before their transformation into S cells to find out whether they demonstrate activity in culture.

Answer 1

Correct answer would be:

C) It made their experiment possible, because it allowed them to assay various fractions of S cells for transforming activity in culture.