After a skeletal muscle fiber is treated with a membrane permeable drug that speeds up the action of the SR Ca+2-ATPase, how would contraction differ after multiple and frequent action potentials? fused tetanus would be reached in the same amount of time as an untreated fiber fused tetanus would be reached sooner than an untreated fiber the maximal tension would be increased compared to an untreated fiber

The correct Answer is "Fused tetanus would be reached sooner than an untreated fiber"

Explanation:

Muscle has a pair of stages - reduction and moderation. Reduction is trailed by a obstinate section once no reduction will occur upon inspiration. This can be the section once the sr ca2+ ATPases are vigorous and are driving the calcium back to the sarcoplasmic reticulum. Once this the forces decrease. If the inspiration are common enough to remove the relief amount, then it's known as a amalgamate tetanus. The quicker the sr ca2+ drives effort, the smaller are the biological time and therefore the faster amalgamate tetanus would be extended.

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the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.