Answer the following statements true (T) or false (F)
1. All sugars are absorbed via secondary active transport.
2. In omnivores, including humans, the cecum is an important organ for digestion of cellulose.
3. Fat absorbed by the small intestine enters the lymphatic system.
4. Frugivores are a type of herbivore.
1. FALSE
2. FALSE
Cellulose, the main macromolecule of the plant cell wall is also called fiber or roughage, and is useful in eliminating solid wastes. The human digestive system is not equipped with the enzymes to digest cellulose, and it therefore passes through the system intact.
3. TRUE
The center of each intestinal villus is occupied by capillaries, the smallest blood vessels in the body, and by a special type of vessel called a lacteal, which is part of the lymphatic system. Most of the fat absorbed in the small intestine exists as bulky protein-bound particles that are too large to enter capillaries. Consequently, absorbed fat enters the larger, wider lacteals. Material absorbed by the lacteals eventually empties into the circulatory system. Other nutrients are absorbed directly into the capillaries and from there into veins.
4. TRUE
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Fill in the blank(s) with correct word
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