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Cell Structure

Cytoplasmic membrane system

Autoradiography depends upon particles emitted from radioactive atoms striking a photographic emulsion that lies on top of the tissue section. When the emulsion is developed, the site where the particle struck the emulsion is developed, the site where the particle struck the emulsion appears as a silver grain, as in figure 8.3a.

Myosin Action Versus Kinesin

Myosin action differs from that of kinesin in that one of the kinesin heads is always in contact with a microtubule, whereas both myosin heads become completely detached from the actin filament. How are these differences correlated with the two types of motor activities in which these proteins engage?