Most ciliates are likely to be found in
I. seawater
II. freshwater
III. acidic hot springs
a. I only
b. I and II
c. II and III
d. II only
e. III only
B
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To determine the nucleotide sequence in DNA, scientists now use
a. electron microscopy. b. antibiotic resistance. c. automated DNA sequencing. d. radioactive tracers. e. viruses.
A 69-year-old man presents with confusion, a headache, dyspnea, and palpitations after he rescued his two grandchildren from their burning house. During your assessment, you note that he has an odd odor on his breath; however, he denies being diabetic. You should:
A) start an IV line of normal saline and administer 10 mL of a 10% solution of calcium chloride. B) administer 1 to 2 g of pralidoxime infused with normal saline solution over a 5- to 10-minute period. C) start an IV line, sedate and chemically paralyze the patient, and then perform endotracheal intubation. D) have him inhale amyl nitrate for 20 seconds and then 100% oxygen for 40 seconds out of each minute.
What process in plants does an ncRNA called COOLAIRÂ regulate?
A. flowering only after being exposed to cold temperatures B. seed development C. time of flowering D. development of stomata
Membranes of thermophilic bacteria are stabilized by phospholipids with ________.
A. fatty acids that tend to be more saturated B. fatty acids that have more double bonds C. fatty acids that have lower molecular weights D. All of the choices are correct.