The Interaction of Two Proteins-Actin and Myosin-Allows the Muscles of Diverse

question 166

Multiple Choice

The interaction of two proteins-actin and myosin-allows the muscles of diverse animal species to generate force and produce movement. Given this, which of the following are TRUE statements?

• A)The evolution of muscle contractile function is a highly conserved process.
• B)The evolution of muscle contractile function shows great diversity in a number of different animal groups.
• C)The force that animal muscles can produce depends on the amount of overlap between actin and myosin protein filaments because this overlap affects the number of actin cross-bridges that can form with myosin binding sites.
• D)The force that animal muscles can produce depends on the amount of overlap between actin and myosin protein filaments, because this overlap affects the number of myosin cross-bridges that can form with actin binding sites.