The flow of material through a reaction pathway usually depends on
(a)control of the first step of the pathway
(b)control at several steps in the pathway
(c)covalent modification of the enzyme that catalyzes the reaction
(d)feed-forward activation

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.