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| 1. |
Why is it that vitamins A, D, E, and K can be toxic, but not C and B?
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| 2. |
Essential amino acids are those that __________.
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| 3. |
The major nutrient group used for quick energy production is __________.
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| 4. |
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| 5. |
Label these structures of the avian digestive system.
[Hint]
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
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| 6. |
Label the following image of a hydra digesting a food particle.
[Hint]
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
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| 7. |
Digestion in the Cnidaria, as in hydra, occurs in a __________.
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| 8. |
Collar cells (Figure 30-5) are found in __________.
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| 9. |
Below is a diagram of a typical collar cell of a sponge. The yellow fringed objects are food items. Label the remaining structures to demonstrate how sponges digest food.
[Hint]
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
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| 10. |
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| 11. |
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| 12. |
Chyme is __________.
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| 13. |
Label the indicated structures in the human digestive system.
[Hint]
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
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| 14. |
Label the structures indicated on this diagram of a stomach.
[Hint]
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
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| 15. |
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| 16. |
The cause of ulcers is _________.
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| 17. |
The function of bile is the __________.
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| 18. |
The nasal cavities and oral cavity merge into the pharynx. What keeps food and drink from going into the nasal cavity rather than down the esophagus?
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| 19. |
Weight loss, anemia, and fatigue are symptoms of what problem?
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| 20. |
What is it that "raises the temperature of a gram of water by 1 degree Celsius"?
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| 21. |
What is the correct sequence of events that all digestive systems must follow in the processing of foodstuffs?
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| 22. |
What triggers the swallowing reflex?
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| 23. |
Which of the following is NOT a function of the stomach?
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| 24. |
Why does the small intestine absorb more nutrients than any other region of the digestive tract?
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| 25. |
Starch (amylose) digestion is complex and involves several different parts of the digestive
anatomy. Which of the following represents the places in the human body where starch is
chemically digested?
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| 26. |
Which of the following is the active form of an enzyme that chemically digests proteins in the stomach?
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| 27. |
The role of the liver in the digestion of food is __________.
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| 28. |
An earthworm's digestive anatomy is designed so that this animal can feed more frequently than an animal such as a sea anemone. Which of the following explains this relationship?
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| 29. |
Which of the following explains why the average herbivore has a longer intestine than the average carnivore?
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| 30. |
An acidic mixture of partially digested food that moves
from the stomach into the small intestine is called
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| 31. |
The hormone responsible for stimulating the secretion of
hydrochloric acid by stomach cells is
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| 32. |
A sudden increase in the amount of secretin circulating in
the blood is an indication that food has recently been introduced
to the
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| 33. |
Humans lack digestive enzymes to attack chitin, a complex
polysaccharide in the exoskeleton of lobster and crayfish.
We also lack enzymes that degrade
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| 34. |
Which of the following is NOT characteristic of bile?
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| 35. |
"Water-soluble compound that works primarily as an enzyme
helper" would be a good definition of
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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