Muscle Contraction: Actin and Myosin Bonding


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question 1 of 3

Thin filaments are primarily composed of what protein?

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1. What prevents actin and myosin from existing in a continuously bonded state?

2. Why does rigor mortis occur after a person dies?

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About This Quiz & Worksheet

The questions mainly seek to assess your knowledge of the various functions, properties, and compositions of actin and myosin filaments. The quiz will ask you to identify the term being described in the question. It will also ask you to select a false statement in a group of true ones.

Quiz & Worksheet Goals

The quiz will explore your comprehension of the following:

  • Thin filaments that are made up of this protein
  • Something that prevents myosin and actin from existing in a bonded state
  • The reason that rigor mortis occurs after death
  • A false statement about troponin
  • The thing that binds to calcium when a muscle contracts

Skills Practiced

You will practice the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related actin and myosin lesson
  • Interpreting information - verify that you can read information regarding filaments that are composed of a certain protein and interpret it correctly
  • Information recall - access the knowledge you've gained regarding the reason for the occurrence of rigor mortis

Additional Learning

Once you have completed the test, make sure to study the related lesson named Muscle Contraction: Actin and Myosin Bonding. This lesson covers the following objectives:

  • Understanding myosin
  • Exploring the meaning of actin
  • Explaining the relationship between actin and tropomyosin
  • Describing troponin
  • Detailing what happens during a muscle contraction