The gastric enzyme ________ is secreted in inactive form and activated by the low pH of gastric juice.

A. rennin
B. trypsin
C. intrinsic factor
D. pepsin


Answer: D

Anatomy & Physiology

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Lizards that display sociality are viviparous species; in contrast, oviparous lizards do not appear to form long-term associations with other individuals of their species

What differences between these two groups of lizards might account for the difference in behavior?

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