Which of the following nutrients does not play a direct role in the production of neurotransmitters? vitamin b6 choline pantothenic acid vitamin b12

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates