Question 2
(Multiple Choice)
In bacterial chemotaxis, diagrammed in Figure , the CheZ phosphatase rapidly reverses the phosphorylation of CheY by histidine kinase CheA. 
Figure This activity by CheZ:
A) amplifies CheA histidine kinase activity.
B) promotes swimming in a straight line.
C) promotes tumbling.
D) mediates sensory adaptation.
E) increases receptor sensitivity.
Answer
B