How many experiments have been conducted worldwide to test Darwin's initial hypothesis regarding natural selection?
A. one
B. 50
C. 100
D. 500
E. thousands
Answer: E
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A. mitochondria. B. chloroplast. C. nucleus. D. golgi apparatus. E. plant cell.
The primary plating medium used to select out Clostridia spp. would be:
a. anaerobic blood agar. b. laked kanamycin-vancomycin (LKV) blood agar. c. phenylethyl alcohol agar (PEA). d. thioglycollate.
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A. carbohydrate. B. nucleic acid. C. protein. D. lipid.