Which of the following happens as actin and myosin filaments slide past each other during muscle contraction?
a. actin filaments shorten, while myosin filaments do not.
b. myosin filaments shorten, while actin filaments do not.
c. either actin or myosin filaments shorten, but not both at the same time.
d. both actin and myosin filaments shorten.
e. neither actin nor myosin filaments shorten.

yes you are doing it right great gob

explanation:

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.