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Answer true or false. For the position function graphed, the acceleration at t = 1 is positive.
Tropomyosin
A regulatory protein in muscle cells that blocks the binding site for myosin on actin molecules, preventing muscle contraction in the absence of calcium.
F-actin Double Helix
A structural configuration of actin filaments arranged in a twisted double helix, significant in muscle contraction and cell movement.
Protein
Large molecules made up of amino acids that perform a variety of functions in the body, including structural support, enzyme catalysis, and transportation.
Fast-twitch Muscle Fibers
Muscle cells specialized for rapid contraction and are primarily engaged during high-intensity, short-duration activities like sprinting.
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