Which of the following statements regarding chemotaxis is
incorrect?
Select one:
a. The fuel for flagellar motion is not ATP, but a proton
gradient.
b. In a tumble, the flagellum reverses direction, causing the
cell to stop moving and change course.
c. When a cell detects a nutrient gradient, it will increase the
frequency of runs to move toward the nutrient.
d. In a cell with peritrichous flagella, each flagellum moves
individually but in a coordinated direction during a run.