In order to measure the step size of kinesin, a group of investigators attached a small silica bead to the tail of a kinesin molecule. What advantage(s)did the attached silica bead provide?
A)The bead made kinesin activity visible to the naked eye.
B)The bead helped to denature kinesin making its properties easier to measure.
C)The bead provided a handle for binding antibodies.
D)The bead absorbed laser light in a manner proportional to the distance the motor moved.
E)The bead made kinesin activity trackable and provided a handle for manipulating and holding the motor using an optical trap.

Question

In order to measure the step size of kinesin, a group of investigators attached a small silica bead to the tail of a kinesin molecule. What advantage(s)did the attached silica bead provide?
A)The bead made kinesin activity visible to the naked eye.
B)The bead helped to denature kinesin making its properties easier to measure.
C)The bead provided a handle for binding antibodies.
D)The bead absorbed laser light in a manner proportional to the distance the motor moved.
E)The bead made kinesin activity trackable and provided a handle for manipulating and holding the motor using an optical trap.

Quizplus · Accepted Answer

Attaching a silica bead to the tail of a kinesin molecule allows for the tracking of kinesin activity and provides a handle for manipulating and holding the motor using an optical trap. This allows for precise measurements of the step size of kinesin.

In Order to Measure the Step Size of Kinesin, a Group