--- title: "Meaning & Key Takeaway of: Cows, by virtue of the plentiful and…" description: "\"“Cows, by virtue of the plentiful and varied bacteria in their rumen, are able to derive energy from things that would pass through a human undigested...." image: "https://sms4smile.com/quotes/i/b6d/mary-roach-635_food_cows-by-virtue-of-the-plentiful-and-vari_245960.png" --- # Cows, by virtue of the plentiful and varied bacteria in… ![“Cows, by virtue of the plentiful and varied bacteria in their rumen, are able to derive energy from things that would pass through a human undigested. The prune pit has a hard, nutritionally blank hull, but the embryo inside provides protein and fat. Rumen bacteria can break down the hull and free…” quote by Mary Roach](https://sms4smile.com/quotes/i/b6d/mary-roach-635_food_cows-by-virtue-of-the-plentiful-and-vari_245960.png) [Download](https://sms4smile.com/quotes/i/b6d/mary-roach-635_food_cows-by-virtue-of-the-plentiful-and-vari_245960.png) [Open image](https://sms4smile.com/quotes/i/b6d/mary-roach-635_food_cows-by-virtue-of-the-plentiful-and-vari_245960.png) > ““Cows, by virtue of the plentiful and varied bacteria in their rumen, are able to derive energy from things that would pass through a human undigested. The prune pit has a hard, nutritionally blank hull, but the embryo inside provides protein and fat. Rumen bacteria can break down the hull and free these nutrients, though it takes them a few days. DePeters showed me one of the mesh bags. “Sometimes I put a midterm exam in there,” he said. Cows can’t digest wood pulp. “I tell my students, ‘The cow didn’t digest that material any better than you did.”” [Mary Roach](https://sms4smile.com/quotes/author/mary-roach/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Cows’ rumen microbes can extract nutrients from tough plant material that humans cannot, illustrating biological specialization and limits of digestion. **In simple terms:** Cows can digest things humans can’t because of microbes. Key Takeaway Recognize the power of symbiotic relationships. Themes biology digestion symbiosis education humor Mood curious amusing educational Type scientific humorous When to use this quote - teaching biology - explaining digestion - food waste reduction - research on ruminants Key Concepts microbial fermentation nutrient extraction comparative anatomy Questions to Reflect On - How do symbiotic microbes expand an organism’s capabilities? - What other animals rely on microbes for nutrition? A Different Perspective Humans lack the microbes, so they cannot digest the same material. ★ ★ ★ ★ ★ No ratings yet [Food](https://sms4smile.com/quotes/about/food/) ## Related quotes > [A cow out on grass is just an incredible thing to behold... Cows and other ruminants can do things we just can't do. 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