Compare and contrast local anesthetics, some general anesthetics, and botulinum neurotoxin in terms of the effect they have on neuron excitability and function.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)