The rhythmic contractions responsible for propelling food through the digestive tract are called
A. elimination.
B. peristalsis.
C. mastication.
D. locomotion.
Answer: B
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Selective estrogen receptor modulators have been used to treat osteoporosis. They work by
A. increasing the amount and activity of thyroid hormones. B. increasing the levels of phosphorus in the blood. C. promoting an estrogen-like effect on bone tissue. D. combining estrogen with progestin.
What is the name of the rule that modifies the original meaning of the Delaney Clause?
a. GRAS list b. Bonnie Clause c. De minimis rule d. No-risk standard e. Precautionary Principle
Maternal anemia occurs when a pregnant woman has a hematocrit ________.
A. below 45% B. below 33% C. below 50% D. below 60%
Some species of animals fed low-calorie diets have increased life expectancies
a. True b. False Indicate whether the statement is true or false