If flagellar rotation of Escherichia coli cells is ________, then CheA is ________. 

A. clockwise; unphosphorylated
B. clockwise; autophosphorylated
C. counterclockwise; unphosphorylated
D. counterclockwise; autophosphorylated


Answer: C

Biology & Microbiology

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Viruses infecting algae have never been detected.

Answer the following statement true (T) or false (F)

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Which structure separates the thoracic and abdominal cavities?

a. the diaphragm b. the liver c. the stomach d. the duodenum e. the ribs

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In a neuron maintaining a resting potential, K+ is encouraged to move out the neuron by favorable _________ gradient.

A. concentration B. electrical C. concentration and electrical

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