You look at a tube following incubation. It has a thin stab line that is pink on the inside. The rest of the tube is clear. Your bacteria is _____ for motility.
Fill in the blank(s) with the appropriate word(s).
negative
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A hormone binds a receptor and activates the cAMP signal transduction pathway ultimately leading to the cell response. Which of the following is NOT a likely mechanism for reversing (or shutting off) cAMP transduction?
A. The hormone dissociating from the receptor. B. The GTP on the alpha subunit of the G protein is hydrolyzed to GDP. C. Activate phosphodiesterase. D. Activate adenylyl cyclase. E. Protein phosphatases remove phosphates from proteins initially activated by protein kinase A.
Compared to a solution of pH 9, a solution of pH 7
A. has more H+ ions. B. has a higher pH. C. is more basic. D. has no OH- ions.
The scientist given credit for devising the two-word scientific naming system is
A. Carolus Linnaeus. B. Charles Darwin. C. Gregor Mendel. D. Aristotle. E. Louis Pasteur.
What is the function of histone deacetylation?
What will be an ideal response?