Which Statement Best Describes the Molecular Basis of Muscle Shortening

question 52

Multiple Choice

Which statement best describes the molecular basis of muscle shortening?

• A) Individual filamentous proteins contract.
• B) Individual filamentous proteins shorten by coiling.
• C) Rod-shaped protein polymers shorten by losing subunits from their ends.
• D) Protein filaments ratchet along other protein filaments.

---

Definitions:

Biomass Plantation

A land area dedicated to growing plants that are to be used for the production of bioenergy or biofuels.

Douglas Fir

A type of evergreen conifer species, notable for its significant role in the timber industry and its habitat, primarily in North America.

Poplar

A type of fast-growing tree found in temperate regions, known for its soft wood used in various applications.

Oak

A group of trees or shrubs in the genus Quercus, known for their durable wood and significance in various habitats.