Figure 35.15

-The structure indicated by the letter "C" above represents ____.
A) thin filament
B) myofibril
C) thick filament
D) myofilament
E) muscle fiber

Question

Figure 35.15
 
-The structure indicated by the letter "C" above represents ____.  
A) thin filament 
B) myofibril 
C) thick filament 
D) myofilament 
E) muscle fiber

Quizplus · Accepted Answer

The letter "C" in the figure represents the thick filament, which is composed of the protein myosin and plays a major role in muscle contraction. The thin filament, composed of the protein actin, is indicated by letter "A" in the figure. Myofibril (B) refers to the basic rod-like unit of a muscle cell, composed of sarcomeres. Myofilament (D) refers to either thick or thin filament. Muscle fiber (E) refers to a single muscle cell.

Figure 35.15 -The Structure Indicated by the Letter "C" Above Represents ____