Tetracycline was the most effective true antibiotic tested against E.coli
Answer:
mucus
trachea
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Answer:
he four bases that make up this code are adenine (A), thymine (T), guanine (G) and cytosine (C). Bases pair off together in a double helix structure, these pairs being A and T, and C and G. RNA doesn't contain thymine bases, replacing them with uracil bases (U), which pair to .