First slide

Muscle

Question

Select the correct statement.

Easy

A

Each F actin is a polymer of G actins
B

Each thin filament is a polymer of meromyosins
C

Each fascicle is a bundle of many muscles
D

Each myofibril contains several muscle fibres

Solution

Each actin (thin) filament is made of two F (filamentous) actins helically wound to each other. Each F actin is a polymer of monomeric G (Globular) actins.

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