The energy for muscle contraction comes from
(1) ATP, (2) actomyosin, (3) electrical impulses, (4) glucose, (5) mechanical stretching.
Question 2
What must be done to a saturated solution for it to become supersaturated?
(1) it must be cooled carefully, (2) it must be stirred vigorously while hot, (3) it must have more water added, (4) it must have more sugar added, (5) it must have cream of tartar added.