Hey everyone! Denki here. Just checkin' up on everyone and seeing how they're doing. Also free points :)

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.

The nature–nurture issue refers to the debate over the relative contributions that make to the development of psychological traits. a.introspection and nerve cell activity b.unconscious and conscious motives c.behavior and mental processes d.genes and experience