In Bacterial Chemotaxis, Diagrammed in Figure , the CheZ Phosphatase

question 4

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.

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