Actin filaments are anchored to
A) bones.
B) Z discs.
C) ATP.
D) cartilage.

Question

Quizplus · Accepted Answer

Actin filaments are anchored to the Z discs, which are located at the ends of sarcomeres in muscle fibers. The Z discs anchor the actin filaments and help to maintain the structure of the sarcomeres during muscle contraction. Option A is incorrect because actin filaments are not anchored to bones. Option C is incorrect because ATP is a molecule that provides energy for muscle contraction, but it does not anchor actin filaments. Option D is incorrect because actin filaments are not anchored to cartilage.

Actin Filaments Are Anchored to