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What does heterotrophic mean?
Unable to synthesize their own nutrients
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How do unicellular organisms obtain food?
- through phagocytosis and formation of food vacuoles, followed by lysosome digestion
- In parameciam, cilia is swept into the oral groove and cytopharynx
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What does the digestive tract of annelids consist of?
mouth, pharynx, esophagus, crop (stores food), gizzard (grinds food), intestines (with typholosole fold), and anus
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What does the digestive tract of humans consist of?
oral cavity, pharynx, esophagus, stomach, small intestine, large intestine, anus
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What enzyme in the mouth is used to hydrolyze starch to maltose?
salivary amylase
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How is food moved down the esophagus?
through peristalsis
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What do the gastic mucosa in the stomach do?
secrete mucus and pepsin
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What is the partially digested food of the stomach known as?
chyme
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What are the three sections of the small intestine?
duodenum, jejunum, and the ileum
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Where do the amino acids, monosaccharides, and large fatty acids go once in the small intestines?
- amino acids and monosaccharides pass through the villi walls into the capillary system
- Fatty acids and glycerol pass into the lacteals
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What enzymes are secreted from the pancreas and what are they used for?
- amylase: carbs
- trypsin: protein
- lipase: fats
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What is the purpose of the large intestine?
absorb salts and any water not already absorbed by the small intestines
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