Indicate Which of the Muscle Proteins in Skeletal Muscle Is

Short Answer

Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below:
a.actin only
b.myosin only
c.actin and myosin
d.troponin-tropomyosin complex
e.actin, troponin, and tropomyosin
f.actin, myosin, troponin, and tropomyosin
-Shape consists of two globular heads attached to a tail