Which of the Following Statements Regarding Chemotaxis Is Incorrect

question 71

Multiple Choice

Which of the following statements regarding chemotaxis is incorrect?

• A) In a cell with peritrichous flagella, each flagellum moves individually but in a coordinated direction during a run.
• B) In a tumble, the flagellum reverses direction, causing the cell to stop moving and change course.
• C) The fuel for flagellar motion is not ATP, but a proton gradient.
• D) When a cell detects a nutrient gradient, it will increase the frequency of runs to move toward the nutrient.

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Definitions:

Refractory Theory

A concept in neuroscience that suggests after a neuron has fired, there is a period during which it cannot fire again.

Delta Waves

Brain waves detected by electroencephalography that are associated with deep sleep and brain activity during meditation.

Beta Waves

The brain wave pattern associated with mental activity.

Alpha Waves

Brain waves detected via EEG that are associated with relaxed, wakeful states, typically present during meditation and light sleep.