What is peristalsis?
A. a process of fat emulsification in the small intestine
B. smooth muscle contractions that move food through the alimentary canal
C. loss of appetite, fatigue, dehydration, and nervous disorders
D. the transport of nutrients to the liver through the hepatic portal vein
E. voluntary control of the rectal sphincters regulating defecation
Answer: B
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What will be an ideal response?
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a. receptor dimerization b. receptor trimerization c. receptor denaturation d. receptor polymerization e. receptor hydrolysis
Which of these animals is most closely related to modern birds?
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Long-range, two-way movement behavior in animals is termed ________.
Fill in the blank(s) with the appropriate word(s).