George Walden was the engineer at the Eli Lilly in charge of insulin production and purification. George Walden’s major contribution was that:

Question

George Walden was the engineer at the Eli Lilly in charge of insulin production and purification.  George Walden’s major contribution was that:

BlackTom AI · Accepted Answer

Examining the question, we need to identify Walden’s major contribution at Eli Lilly regarding insulin.
Option 1: 'He invented a blood glucose meter' — This is not associated with Walden or Lilly’s insulin work; blood glucose meters were developed later by other researchers and companies, and this option mislabels his role.
Option 2: 'He optimized Fred Banting’s surgical procedure' — Walden did not alter Banting’s surgical approach; Banting’s surgery predates Lilly’s insulin purification work and is not attributed to Walden.
Option 3: 'He invented isoelectric precipitation.' — This attribution aligns with historical accounts of Walden’s contribution, where isoelectric precipitation was used to purify insulin, making the process more efficient and scalable at Lilly.
Option 4: 'He optimized Collip’s method of alcohol purification' — While Collip contributed to purification, the specific advancement most credited to Walden is the isoelectric precipitation technique, not merely optimizing alcohol-based methods.
Overall, the third option correctly reflects Walden’s notable role in developing isoelectric precipitation for insulin purification, distinguishing it from other unrelated or less accurate claims.

BME 3 Treating Diabete... Week 4 Industrialization and Purification of Insulin

George Walden was the engineer at the Eli Lilly in charge of insulin production and purification. George Walden’s major contribution was that:

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