Which brain structure maintains homeostasis and influences blood pressure, heart rate, digestive activity, breathing rate, and body temperature?
A) hypothalamus
B) medulla oblongata
C) thalamus
D) cerebellum
A
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Which of the listed contraceptive methods is the most effective?
a. withdrawal b. diaphragm c. condoms d. douching e. rhythm method
What is the complementary DNA sequence to 5' ATGCATGTCA 3'?
a. 5' ATGCATGTCA 3' b. 5' TACGTACAGT 3' c. 5' TGACATGCAT 3' d. 5' ACTGTACGTA 3'
The trp repressor blocks transcription of the trp operon when the repressor _____
A) binds to the inducer B) binds to tryptophan C) is not bound to tryptophan D) is not bound to the operator
The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is
A. yellow marrow. B. red marrow. C. spongy bone. D. compact bone. E. fibrous membrane.