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

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

What is the function of histone deacetylation?

What will be an ideal response?

Biology & Microbiology