Study Companion

Question Q261) If the inner surface of the ileum of the human small intestine was smooth, rather than being folded and subdivided into villi, which of the following would be true: a) The rate of absorption of digested food molecules would be higher, because the digested food would pass easily through the digestive tract b) Digestion would not be effective, because there would be fewer cells secreting trypsin (a protein digesting enzyme) c) Humans would have needed to evolve as much longer small intestine to absorb sufficient nutrients from their food d) Humans would not be able to survive, because the digestive tract would be more susceptible to damage

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