Describe three things that limit travel between stars
What will be an ideal response?
huge distances, fuel needs, the finite speed of light
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All proinflammatory cytokines EXCEPT ________ induce fever at the systemic level
A) IL-4 B) IL-12 C) IL-6 D) IL-17
Any agent that causes damage to DNA is a potential carcinogen
Indicate whether the statement is true or false
Most drugs that inhibit the synthesis of the cell wall act by
A) preventing the cross-linkage of NAM subunits. B) blocking the secretion of cell wall molecules from the cytoplasm. C) preventing the formation of alanine-alanine bridges. D) disrupting the formation of the mycolic acid layer of the cell wall. E) preventing the formation of ?-lactamases.
Although most metabolic reactions are freely reversible, a few irreversible catabolic steps are bypassed during biosynthesis with special enzymes that catalyze the reverse reaction in order to allow for independent regulation of catabolic and anabolic pathways.
Answer the following statement true (T) or false (F)