The Biased Random Walk of Bacteria Is the Result of Swimming

Multiple Choice

The biased random walk of bacteria is the result of swimming with

A) less tumbling when Ca²⁺ levels are low.
B) more tumbling when moving toward a chemorepellant.
C) more tumbling when moving toward a chemoatractant.
D) more tumbling when ATP binds the flagellar motor.
E) None of the answers is correct.