________ regulates the kidney's retention of water. Its secretion is suppressed by alcohol.

A. Thyroxine
B. Vasopressin (ADH)
C. Oxytocin
D. Prolactin


Answer: B

Biology & Microbiology

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The actinoplanetes can be found in ________ habitats.

A. freshwater B. marine C. soil D. All of the choices are correct.

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For water to leave a kidney tubule by osmosis, the interstitial fluid around that region of tubule must be ____ relative

to the filtrate inside the tubule. a. hypertonic b. hypotonic c. isotonic

d. osmotic e. permeable

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Which factor is NOT responsible for the increase in the size of human population?

A. Clothing B. Medicine C. Sanitation D. Innovations in agriculture E. Increased total fertility rate

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A ________ is a DNA molecule used in hybridization reactions to detect the presence of a particular gene in separated DNA fragments.

A. blot B. vector C. probe D. plasmid

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