If you removed a coleoptile tip, placed it on an agar block for a period of time, and then placed the
agar block to the side of the tip of a decapitated coleoptile, which of the following would happen next?
a. The coleoptile would grow in a spiral pattern.
b. The coleoptile would die.
c. The coleoptile would not bend.
d. The coleoptile would bend away from the side having the agar block.
e. The coleoptile would bend toward the side having the agar block.
D
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Which of the following mechanisms of genetic transfer utilizes a physical connection between two bacteria?
A. Transformation B. Transduction C. Conjugation D. All of the answers are correct
You wish to determine if cytosolic calcium fluxes are associated with signal transduction in a particular cell type. One means of observing the calcium fluxes would be to utilize
A) caspases. B) cytochrome c. C) nitric oxide. D) radioactive cAMP. E) cameleons.
How do somatic neurons and autonomic neurons differ? (Check all that apply.)
_____ Somatic neurons innervate the body surface, while autonomic neurons innervate internal structures. _____ Somatic neurons control skeletal muscle, while autonomic neurons control smooth and cardiac muscle. _____ Somatic neurons control exocrine glands, while autonomic neurons do not. _____ Somatic neurons control their effectors directly, while autonomic neurons use a series of neurons. _____ Somatic neurons are always excitatory, while autonomic neurons may be either excitatory or inhibitory.
What is the first step in the production of a miRNA?
A. transcription from a nuclear gene B. cleavage to form a short double-stranded RNA C. infection with a virus D. design of an experimental treatment E. export of the pre-miRNA from the nucleus