Question

Titin is a spring-shaped elastic protein that attaches to the thick filament and anchors it to the Z-discs of a sarcomere. If titan was denatured, making it straight, it would no longer be able to: a. hold the thick filament in place. b. recoil when stretched and uncoil when the force is removed. c. contract the sarcomere. d. uncoil when stretched and recoil when the force is removed.

Answer 1

Answer:

a. hold the thick filament in place.

Explanation:

Titin is the third most abundant protein in skeletal muscle (after actin and myosin), this protein has a highly elastic potential, and is therefore the protein most responsible for muscle elasticity.

Each titin molecule connects a Z line to the M line of a sarcomere, thus helping to stabilize the position of the thick filament.

So, titin denaturation may result in an inability to hold the thick filament in place.