If myosin II heads are attached to a glass slide and actin filaments are allowed to bind to them, the filaments will glide on the surface …
A) toward their plus end in the presence of ATP.
B) toward their plus end in the presence of GTP.
C) toward their minus end in the presence of ATP.
D) toward their minus end in the presence of GTP.
E) toward their plus end in the presence of ADP.

Question

Quizplus · Accepted Answer

Gliding occurs due to many individual steps taken by bound myosin heads in the presence of ATP. Since myosin II moves toward the plus end of actin filaments and is immobilized on the glass slide, the actin filaments will glide toward their minus end.

If Myosin II Heads Are Attached to a Glass Slide