Question

fill in the blank question

in a myofibril, a thick filament is composed of pairs of molecules intertwined together.

Explanation:

Identify the structural components of thick filaments

Using the Thick Filaments and Myosin Structure knowledge points

A myofibril contains two main types of myofilaments: thick filaments and thin filaments. Thick filaments are composed of several hundred molecules of the contractile protein myosin. Each individual myosin molecule consists of two heavy chains intertwined together to form a rod-like tail, which terminates in two globular heads. Therefore, a thick filament is structurally composed of pairs of intertwined myosin molecules.

Answer:

In a myofibril, a thick filament is composed of pairs of <blank>myosin</blank> molecules intertwined together.