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Even though the two archaeal viruses HHPV-1 and HRPV-1 are clearly related to each other, based on genome and virion structures, they have one major difference.Which of the following describes this difference?
Sarcomere
The basic unit of a muscle's cross-striated myofibril, responsible for muscle contraction and defined by the area between two Z lines.
Actin
One of two major proteins of muscle; makes up thin filaments in myofibrils of muscle fibers. See also myosin.
Myosin
A type of protein found in muscle tissue as a thick filament that plays a key role in muscle contraction and movement.
Sarcolemma
Plasma membrane of a muscle fiber; also forms the tubules of the T system involved in muscular contraction.
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