In smooth muscle cells, Ca2+ binds to ________ which activates the enzyme ________ to phosphorylate myosin and increase force.
What will be an ideal response?
calmodulin, myosin light chain kinase (MLCK)
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Provide a plausible explanation for the increased incidence of cancer in the elderly
What will be an ideal response?
Considering muscles, bones, and joints as lever systems, a calculated "moment" for the load would be
a. force times load arm b. force times power arm c. load arm divided by force d. either a and b e. either b and c
The joule is the international unit for one calorie
Indicate whether the statement is true or false
A hypertonic solution
A) would cause cells to swell when placed in the solution. B) causes water to rush inside cells. C) has a lower osmotic pressure than do the cells in the solution. D) has a greater concentration (number) of solute particles than do the cells in the solution.