Complete each sentence. a. Cross-bridge binding triggers the release of ATP hydrolysis products from , and produces the which generates force.
b. Ca2+ binds to on the thin filaments, causing tropomyosin to move away from its blocking position, thereby uncovering cross-bridge binding sites on
c. Energized portions of myosin molecules called bind to actin.
d. binds to myosin, breaking the linkage between actin and myosin and thereby allowing the cross-bridges to from actin.

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there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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