Myofibrils Contain What Type of Proteins? Select All That Apply

Question

Myofibrils contain what type of proteins? Select all that apply.
A)contractile proteins.
B)regulatory proteins.
C)structural proteins.
D)tensile proteins

Accepted Answer

Myofibrils, which are essential components of muscle fibers, contain contractile proteins (such as actin and myosin) that are responsible for muscle contraction, regulatory proteins (such as troponin and tropomyosin) that control the contraction process, and structural proteins (such as titin and nebulin) that maintain the alignment and integrity of the contractile apparatus. Tensile proteins are not a recognized category in the context of myofibril composition.