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The tryptophan operon in some bacteria is a repressible operon. Which of the following statements correctly describes this operon?
It is activated only when glucose is present in the growth medium.
It is deactivated whenever tryptophan is added to the growth medium.
It is activated only when tryptophan is present in the growth medium.
It is permanently active.
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Ответ:
Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!
cutt.ly/wzUiVyK
Ответ:
Longitudinal Waves
Explanation:
The particles of the medium move parallel to the direction that the pulse moves. This type of wave is a longitudinal wave. Longitudinal waves are always characterized by particle motion being parallel to wave motion. A sound wave traveling through air is a classic example of a longitudinal wave.