Myofibrils are composed of thick filaments (myosin with projecting heads) and thin filaments (actin, two strands twisted together).
Los miofilamentos gruesos están hechos de miosina, con cabezas que se proyectan, y los filamentos delgados están hechos de actina, dispuesta en dos hebras retorcidas.
| Front | State the molecules that make up the thick and thin filaments of a myofibril and describe their shape and arrangement. |
|---|---|
| Back | Myofibrils are composed of:
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