The pons and medulla oblongata are part of the ____

a. thalamus
b. hypothalamus
c. cerebrum
d. brain stem
e. cerebellum


ANSWER: d

Biology & Microbiology

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You are a botanist surveying a previously unstudied island. You discover a plant that has a small freeliving

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a. cycads b. seedless vascular plants c. gymnosperms d. angiosperms e. monocots

Biology & Microbiology

The earliest RNA probably functioned in

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After a biology field trip, you make a thin section of a flowering plant stem. You observe these two main sets of cells: the lower set of cells is large, has thick walls, and tests positive for the lignin molecule, while the smaller, but uniform red cells do not have lignin. From this evidence, you conclude that the larger cells with lignin are

A. rhizoids. B. phloem. C. xylem. D. cuticles. E. stomata.

Biology & Microbiology

Graves disease is an autoimmune disorder in which a person's thyroid is stimulated to produce too much thyroxine

Indicate whether the statement is true or false

Biology & Microbiology