Genetic disorders are caused by mutations in genes. These genes consist of DNA and are inherited by the organism by its parents. Genes code for specific amino acids, and they are so complex that we still do not completely comprehend the function of every gene in the human body so we cannot remove them in order to fix a disease. Moreover, every cell in an organism's body has the same genome (except the gametes) so it is not possible to delete the faulty gene from the cells.
Nerve cells communicate by sending an electrical signal through an axon, from this molecules get released into the synapse this then binds itself onto receptor sites. With ion-linked channel receptors, the ligands get binded to a protein. The ion channels are then opened and the proccess gets repeated. Does that help?
I can answer it I just need to see the pictures! Message me when you upload them. It will be to do with the turgidity of the cell and the vacuole
An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)