Gastrulation in sea urchins, Drosophila, and Xenopus all begin with a change in cell shape, in which the apical surface of an epithelial sheet contracts. This process is called:

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#Question id: 11970

#Unit 7. System Physiology – Animal

Why do the cells of the digestive system secrete proteolytic enzymes, such as pepsin, in their inactive forms?

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#Question id: 11971

#Unit 7. System Physiology – Animal

Over-the-counter medications for acid reflux or heartburn block the production of stomach acid. Which of the following cells are directly affected by this medication?

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#Question id: 11972

#Unit 7. System Physiology – Animal

The active ingredient orlistat acts to decrease the amount of fat that is absorbed by attaching to enzymes that digest fat. Which of the following are potential targets of orlistat?

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#Question id: 11973

#Unit 7. System Physiology – Animal

The digestion of ________ begins in the stomach.

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#Question id: 11978

#Unit 10. Ecological Principles

Which of the following statements about the ocean pelagic biome is true?

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#Question id: 11982

#Unit 10. Ecological Principles

Which of the following is a behavioral pattern that results from a proximate cause?