Which statement is true concerning summation?
Answer: Increasing the rate of muscle fiber stimulation creates summation
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Describe the difficulty in distinguishing a cell in the late stages of prophase and the early stages of metaphase
What will be an ideal response?
Based on the graph, how soon could another action potential be easily initiated (at the end of the relative refractory period) after the first stimulus?
A) less than 0.5 msec B) 1 msec C) 2 msec D) 3 msec E) 4 msec
_____ are densely staining, highly compacted, and transcriptionally inactive regions of chromatin
a. Homochromatin b. Heterochromatin c. Histone-dependent chromatin d. Primary chromatin e. Euchromatin
___________________ structures are similar in function and appearance, but do not originate from a common ancestor.
A. Vestigial B. Homologous C. Analogous D. None of the above