All cells recycle the essential element _____ from amino acids and nucleotides.
Fill in the blank(s) with the appropriate word(s).
Answer: Nitrogen
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You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators. What makes these insects so toxic?
A. Monarch caterpillars produce cardenolides in their digestive tracts. B. Monarch caterpillars use cardenolides from milkweed to synthesize toxins. C. Monarch caterpillars ingest milkweed latex which "chokes" their predators. D. Monarch caterpillars store cardenolides from milkweeds. E. Monarch caterpillars secrete latex from their bodies.
Pulmonary veins carry
a. oxygen-rich blood. b. oxygen-poor blood. c. blood back to the heart. d. blood from the heart. e. a combination of two of these
Match each hormone produced by the anterior pituitary gland with the ultimate effect(s) each has on other endocrine glands.
A condition that occurs as a result of the lower esophageal sphincter opening thus allowing food from the stomach to reenter the esophagus is called
What will be an ideal response?