One way RNA interference molecules work is by selectively cleaving DNA molecules that have
sequences complementary to small RNA molecules.
_________________ Indicate whether the statement is true or false.
F, mRNA
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Answer the following statements true (T) or false (F)
1. The exoenzyme that causes toxic shock syndrome is called erythrogenic toxin. 2. The neurotoxins produced by Clostridium botulinum and Clostridium tetani cause a spastic, rigid type of paralysis. 3. Although most people use the terms “infection” and “infectious disease” synonymously, microbiologists define infection as colonization by a pathogen. 4. Avirulent strains do not cause disease. 5. It is thought that the waxes in the cell walls of Mycobacterium tuberculosis protect this pathogen from digestion within phagocytes.
The two major types of phagocytic cells are the ________ and the ________
Fill in the blank(s) with correct word
During bacterial conjugation, interrupted matings yielded the following information: leu 10 minutes, arg 8 minutes, str 15 minutes, and amp 12 minutes. Based on this information, the order of the genes, beginning at the origin, is
A) amp-arg-leu-str. B) str-amp-leu-arg. C) leu-arg-str-amp. D) arg-amp-leu-str. E) arg-leu-amp-str.
If a plant appears blue to us, what wavelength of light is being reflected?
A) blue B) green C) red D) yellow