One way one can purify myosin from other skeletal muscle proteins is to immobilize actin on a column, pour a mix of the muscle proteins through, wash first to get out the nonspecific proteins and then do a second to wash to obtain myosin. Based on the contraction cycle, your first wash should
a. include ATP, but the second wash should not.
b. not include ATP, but the second wash should.
c. include ATP, as should the second wash.
d. not include ATP, and neither should the second.
e. should include calcium, but the second one should not.
B
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The ____________________ are hairlike nerve fibers that extend from the conus medullaris and that remain within the vertebral canal.
Fill in the blank(s) with the appropriate word(s).
Your patient was in a car accident and has been diagnosed with a dislocation of C1 and C2. Which specific structure could cause damage to the spinal cord because of this dislocation?
A) The transverse process of the atlas B) The dens of the axis C) The transverse foramen of the atlas D) The spinous process of the axis
In working memory,
A. information is retained for less than a second. B. the frontal lobe plays the most important role. C. current information is lost when new information is presented. D. there is increased synaptic activity by long-term potentiation. E. there is consolidation of information.
The period from conception until birth is
A. the prenatal period. B. the germinal period. C. the embryonic period. D. the fetal period. E. the conceptual period.