Optical laser trapping (tweezers) Atomic Force Microscopy (AFM) fluorescent spot tracking drug inhibition of ATPase activity A. kinesin 1 step size B. how much force is generated by a motor protein C. 3D visualization of motor movement along a filament D. whether a microtubule or microfilament motor protein is responsible for cell activity

optical laser trapping (tweezers)

B) how much force is generated by a motor protein

Atomic Force Microscopy (AFM)

C) 3D visualization of motor movement along a filament

fluorescent spot tracking

A) kinesin 1 step size

drug inhibition of ATPase activity

D) whether a microtubule or microfilament motor protein is responsible for cell activity

Explanation:

Optical tweezers have helped to reveal how motor proteins generate and react to force.

AFM topographs have a resolution that offers structural data about the 3D organization of microfilaments.

Fluorescent spot tracking is an experimental technique that provides information on kinesin 1 step size.

Drug inhibition of ATPase activity can help determine whether a microtubule or microfilament motor protein is behind cell activity.