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Assertion: The large intestine secretes digestive enzymes that break down complex carbohydrates and proteins.
Reason: The digestive enzymes secreted by the large intestine play a crucial role in the final stage of food digestion.
Assertion and reason are both true, and reason is the correct explanation of assertion.
Both assertion and reason are accurate, but reason is not the correct explanation of assertion.
The assertion is correct, but the reasoning is incorrect.
Both the assertion and reason are incorrect.
Answers (1)
This assertion is false. The large intestine does not secrete any digestive enzymes. Instead, it contains bacteria that can ferment and break down complex carbohydrates and proteins that were not digested in the small intestine. The byproducts of bacterial fermentation are absorbed by the large intestine and contribute to the formation of feces.
The small intestine is the primary site for the digestion of carbohydrates, proteins, and fats. Enzymes secreted by the pancreas and small intestine break down these macronutrients into smaller molecules that can be absorbed by the intestinal epithelium. Any undigested food material passes from the small intestine to the large intestine.
In the large intestine, bacteria ferment undigested food particles, such as fiber and resistant starch, to produce short-chain fatty acids, gas, and other byproducts. These byproducts are absorbed by the large intestine and contribute to the formation of feces. The large intestine does not secrete any digestive enzymes, but it does contain goblet cells that secrete mucus to lubricate the fecal matter and facilitate its movement through the colon.
Option d is the correct answer.
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