The Use of Agar as a More Robust Gelling Agent

Question

The use of agar as a more robust gelling agent in solid media was suggested by
A) Robert Koch.
B) Ignaz Semmelweis.
C) Angelina Hesse.
D) Louis Pasteur.
E) Richard Petri.

Accepted Answer

Angelina Hesse, the wife of a microbiologist, suggested using agar as a gelling agent in solid media, which was later developed by her husband, Walther Hesse, and became widely adopted in microbiology. None of the other options mentioned agar specifically as a gelling agent.