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What to Know – Digestion and Excretion
38.3 – Digestion
1. Distinguish intracellular from extracellular digestion.
2. Discuss how an extracellular digestive system is much more efficient (than
intracellular).
3. Identify the components of the human digestive system and discuss their functions.
4. Discuss the theme of “form fits function” and give examples from the digestive
system.
5. Identify the enzymes involved in the chemical digestion of food in the mouth,
stomach, and small intestine.
6. Identify the types of biomolecules digested in the various components of the human
digestive system.
7. Compare adaptations of the digestive systems of herbivores and carnivores.
38.3 - Excretion
8. Identify the 3 types of nitrogen-containing waste and discuss their relative toxicity
and solubility.
9. Discuss how animals in different living environments (aquatic, land, egg-laying)
manage their nitrogen-containing waste.
10. Identify the components of the human excretory system and discuss their functions.
11. Discuss the theme of “form fits function” and give examples from the excretory
system.
12. Identify the components of a kidney and nephron.
13. Explain how nephrons conserve water and increase the concentration of urea in urine.