Mei had high blood pressure, so her physician gave her a prescription for a certain drug that lowered her blood pressure by allowing more sodium ions to be excreted in the urine. This drug interfered with the making of ________
A) erythropoietin
B) atrial natriuretic hormone
C) angiotensin II
D) growth hormone
C
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In the Hardy-Weinberg equation, _____________________ represents the dominant allele, while _____________________ represents the recessive allele
Fill in the blank(s) with correct word
You insert a fragment of sheep DNA into a plasmid containing an AmpR gene. You transform bacteria with the recombinant plasmid, and plate the cells on growth media containing the antibiotic ampicillin. Each colony on the plate arose from ________ that ________ to ampicillin.
A. many bacteria; are sensitive B. a single bacterium; is resistant C. a single bacterium; is sensitive D. many bacteria; are resistant
Sue was monitoring the oil spill into the Gulf of Mexico from an oil tanker. From her observations, she noted that the oil was moving as large patches in the water. It did not appear as though the oil was dissolving into the water. Why did the oil not dissolve into the water?
A. Hydrophobic interactions B. Surface tension C. Sea water acts as a solvent D. Water forms hydration shells E. Water has a high heat of vaporization
Which of the following statements is true of
the proteobacteria? a. They are the most diverse group of bacteria. b. Some are photoautotrophs. c. Some are chemoautotrophs. d. Some are chemoheterotrophs. e. All of these are true