BIOL 103 Lecture 3: bio lec 1.4

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Research example of digestive adaptation increasing milk production in cows. Leads to 75 reduction in protein supplements and 250 savings year cow. Starch is easier to hydrolyze it has 1 4 linkages but they are connected parallel opposite directions. On the other hand cellulose also has 1 4 linkages but they are connected at. In 12 24 hours any undigested material passes through the large intestine and feces are expelled through the anus. 5 6 hrs small intestine final digestion nutrient absorption through anus. 12 24 hrs large intestine undigested material passes through feces expelled. Complex organic molecules simples molecules smaller ones obtains and processes food. Oral cavity o teeth salivary glands in humans 3 pairs of major glands. Different population of people how different numbers of genes that encode salivary amylase people in the middle east have almost two times the amount of genes than the. Scientists were surprised because they have salivary glands.

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